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authorsvn2git <svn2git@FreeBSD.org>1994-05-01 08:00:00 +0000
committersvn2git <svn2git@FreeBSD.org>1994-05-01 08:00:00 +0000
commita16f65c7d117419bd266c28a1901ef129a337569 (patch)
tree2626602f66dc3551e7a7c7bc9ad763c3bc7ab40a /gnu/gcc2/cc1
parent8503f4f13f77abf7adc8f7e329c6f9c1d52b6a20 (diff)
Diffstat (limited to 'gnu/gcc2/cc1')
-rw-r--r--gnu/gcc2/cc1/Makefile23
-rw-r--r--gnu/gcc2/cc1/c-aux-info.c642
-rw-r--r--gnu/gcc2/cc1/c-convert.c95
-rw-r--r--gnu/gcc2/cc1/c-decl.c6494
-rw-r--r--gnu/gcc2/cc1/c-iterate.c594
-rw-r--r--gnu/gcc2/cc1/c-lang.c129
-rw-r--r--gnu/gcc2/cc1/c-lex.c2111
-rw-r--r--gnu/gcc2/cc1/c-parse.c3435
-rw-r--r--gnu/gcc2/cc1/c-pragma.c198
-rw-r--r--gnu/gcc2/cc1/c-typeck.c5827
10 files changed, 0 insertions, 19548 deletions
diff --git a/gnu/gcc2/cc1/Makefile b/gnu/gcc2/cc1/Makefile
deleted file mode 100644
index 6e26b5140699..000000000000
--- a/gnu/gcc2/cc1/Makefile
+++ /dev/null
@@ -1,23 +0,0 @@
-# @(#)Makefile 6.2 (Berkeley) 2/2/91
-
-PROG= gcc1
-BINDIR= /usr/libexec
-SRCS= c-parse.c c-lang.c c-lex.c c-pragma.c c-decl.c \
- c-typeck.c c-convert.c c-aux-info.c c-iterate.c
-
-CFLAGS+= -I. -I$(.CURDIR) -I$(.CURDIR)/../lib
-YFLAGS=
-NOMAN= noman
-
-.if exists(${.CURDIR}/../lib/obj)
-LDADD= -L${.CURDIR}/../lib/obj -lgcc2
-DPADD= ${.CURDIR}/../lib/obj/libgcc2.a
-.else
-LDADD= -L${.CURDIR}/../lib/ -lgcc2
-DPADD= ${.CURDIR}/../lib/libgcc2.a
-.endif
-
-LDADD+= -lgnumalloc
-DPADD+= ${LIBGNUMALLOC}
-
-.include <bsd.prog.mk>
diff --git a/gnu/gcc2/cc1/c-aux-info.c b/gnu/gcc2/cc1/c-aux-info.c
deleted file mode 100644
index 2e1506447e35..000000000000
--- a/gnu/gcc2/cc1/c-aux-info.c
+++ /dev/null
@@ -1,642 +0,0 @@
-/* Generate information regarding function declarations and definitions based
- on information stored in GCC's tree structure. This code implements the
- -aux-info option.
-
- This code was written by Ron Guilmette (rfg@mcc.com).
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include <stdio.h>
-#include "config.h"
-#include "flags.h"
-#include "tree.h"
-#include "c-tree.h"
-
-extern char* xmalloc ();
-
-enum formals_style_enum {
- ansi,
- k_and_r_names,
- k_and_r_decls
-};
-typedef enum formals_style_enum formals_style;
-
-
-static char* data_type;
-
-static char * concat ();
-static char * concat3 ();
-static char * gen_formal_list_for_type ();
-static int deserves_ellipsis ();
-static char * gen_formal_list_for_func_def ();
-static char * gen_type ();
-static char * gen_decl ();
-void gen_aux_info_record ();
-
-/* Take two strings and mash them together into a newly allocated area. */
-
-static char*
-concat (s1, s2)
- char* s1;
- char* s2;
-{
- int size1, size2;
- char* ret_val;
-
- if (!s1)
- s1 = "";
- if (!s2)
- s2 = "";
-
- size1 = strlen (s1);
- size2 = strlen (s2);
- ret_val = xmalloc (size1 + size2 + 1);
- strcpy (ret_val, s1);
- strcpy (&ret_val[size1], s2);
- return ret_val;
-}
-
-/* Take three strings and mash them together into a newly allocated area. */
-
-static char*
-concat3 (s1, s2, s3)
- char* s1;
- char* s2;
- char* s3;
-{
- int size1, size2, size3;
- char* ret_val;
-
- if (!s1)
- s1 = "";
- if (!s2)
- s2 = "";
- if (!s3)
- s3 = "";
-
- size1 = strlen (s1);
- size2 = strlen (s2);
- size3 = strlen (s3);
- ret_val = xmalloc (size1 + size2 + size3 + 1);
- strcpy (ret_val, s1);
- strcpy (&ret_val[size1], s2);
- strcpy (&ret_val[size1+size2], s3);
- return ret_val;
-}
-
-/* Given a string representing an entire type or an entire declaration
- which only lacks the actual "data-type" specifier (at its left end),
- affix the data-type specifier to the left end of the given type
- specification or object declaration.
-
- Because of C language weirdness, the data-type specifier (which normally
- goes in at the very left end) may have to be slipped in just to the
- right of any leading "const" or "volatile" qualifiers (there may be more
- than one). Actually this may not be strictly necessary because it seems
- that GCC (at least) accepts `<data-type> const foo;' and treats it the
- same as `const <data-type> foo;' but people are accustomed to seeing
- `const char *foo;' and *not* `char const *foo;' so we try to create types
- that look as expected. */
-
-static char*
-affix_data_type (type_or_decl)
- char *type_or_decl;
-{
- char *p = type_or_decl;
- char *qualifiers_then_data_type;
- char saved;
-
- /* Skip as many leading const's or volatile's as there are. */
-
- for (;;)
- {
- if (!strncmp (p, "volatile ", 9))
- {
- p += 9;
- continue;
- }
- if (!strncmp (p, "const ", 6))
- {
- p += 6;
- continue;
- }
- break;
- }
-
- /* p now points to the place where we can insert the data type. We have to
- add a blank after the data-type of course. */
-
- if (p == type_or_decl)
- return concat3 (data_type, " ", type_or_decl);
-
- saved = *p;
- *p = '\0';
- qualifiers_then_data_type = concat (type_or_decl, data_type);
- *p = saved;
- return concat3 (qualifiers_then_data_type, " ", p);
-}
-
-/* Given a tree node which represents some "function type", generate the
- source code version of a formal parameter list (of some given style) for
- this function type. Return the whole formal parameter list (including
- a pair of surrounding parens) as a string. Note that if the style
- we are currently aiming for is non-ansi, then we just return a pair
- of empty parens here. */
-
-static char*
-gen_formal_list_for_type (fntype, style)
- tree fntype;
- formals_style style;
-{
- char* formal_list = "";
- tree formal_type;
-
- if (style != ansi)
- return "()";
-
- formal_type = TYPE_ARG_TYPES (fntype);
- while (formal_type && TREE_VALUE (formal_type) != void_type_node)
- {
- char* this_type;
-
- if (*formal_list)
- formal_list = concat (formal_list, ", ");
-
- this_type = gen_type ("", TREE_VALUE (formal_type), ansi);
- formal_list =
- (strlen (this_type))
- ? concat (formal_list, affix_data_type (this_type))
- : concat (formal_list, data_type);
-
- formal_type = TREE_CHAIN (formal_type);
- }
-
- /* If we got to here, then we are trying to generate an ANSI style formal
- parameters list.
-
- New style prototyped ANSI formal parameter lists should in theory always
- contain some stuff between the opening and closing parens, even if it is
- only "void".
-
- The brutal truth though is that there is lots of old K&R code out there
- which contains declarations of "pointer-to-function" parameters and
- these almost never have fully specified formal parameter lists associated
- with them. That is, the pointer-to-function parameters are declared
- with just empty parameter lists.
-
- In cases such as these, protoize should really insert *something* into
- the vacant parameter lists, but what? It has no basis on which to insert
- anything in particular.
-
- Here, we make life easy for protoize by trying to distinguish between
- K&R empty parameter lists and new-style prototyped parameter lists
- that actually contain "void". In the latter case we (obviously) want
- to output the "void" verbatim, and that what we do. In the former case,
- we do our best to give protoize something nice to insert.
-
- This "something nice" should be something that is still legal (when
- re-compiled) but something that can clearly indicate to the user that
- more typing information (for the parameter list) should be added (by
- hand) at some convenient moment.
-
- The string chosen here is a comment with question marks in it. */
-
- if (!*formal_list)
- {
- if (TYPE_ARG_TYPES (fntype))
- /* assert (TREE_VALUE (TYPE_ARG_TYPES (fntype)) == void_type_node); */
- formal_list = "void";
- else
- formal_list = "/* ??? */";
- }
- else
- {
- /* If there were at least some parameters, and if the formals-types-list
- petered out to a NULL (i.e. without being terminated by a
- void_type_node) then we need to tack on an ellipsis. */
- if (!formal_type)
- formal_list = concat (formal_list, ", ...");
- }
-
- return concat3 (" (", formal_list, ")");
-}
-
-/* For the generation of an ANSI prototype for a function definition, we have
- to look at the formal parameter list of the function's own "type" to
- determine if the function's formal parameter list should end with an
- ellipsis. Given a tree node, the following function will return non-zero
- if the "function type" parameter list should end with an ellipsis. */
-
-static int
-deserves_ellipsis (fntype)
- tree fntype;
-{
- tree formal_type;
-
- formal_type = TYPE_ARG_TYPES (fntype);
- while (formal_type && TREE_VALUE (formal_type) != void_type_node)
- formal_type = TREE_CHAIN (formal_type);
-
- /* If there were at least some parameters, and if the formals-types-list
- petered out to a NULL (i.e. without being terminated by a void_type_node)
- then we need to tack on an ellipsis. */
-
- return (!formal_type && TYPE_ARG_TYPES (fntype));
-}
-
-/* Generate a parameter list for a function definition (in some given style).
-
- Note that this routine has to be separate (and different) from the code that
- generates the prototype parameter lists for function declarations, because
- in the case of a function declaration, all we have to go on is a tree node
- representing the function's own "function type". This can tell us the types
- of all of the formal parameters for the function, but it cannot tell us the
- actual *names* of each of the formal parameters. We need to output those
- parameter names for each function definition.
-
- This routine gets a pointer to a tree node which represents the actual
- declaration of the given function, and this DECL node has a list of formal
- parameter (variable) declarations attached to it. These formal parameter
- (variable) declaration nodes give us the actual names of the formal
- parameters for the given function definition.
-
- This routine returns a string which is the source form for the entire
- function formal parameter list. */
-
-static char*
-gen_formal_list_for_func_def (fndecl, style)
- tree fndecl;
- formals_style style;
-{
- char* formal_list = "";
- tree formal_decl;
-
- formal_decl = DECL_ARGUMENTS (fndecl);
- while (formal_decl)
- {
- char *this_formal;
-
- if (*formal_list && ((style == ansi) || (style == k_and_r_names)))
- formal_list = concat (formal_list, ", ");
- this_formal = gen_decl (formal_decl, 0, style);
- if (style == k_and_r_decls)
- formal_list = concat3 (formal_list, this_formal, "; ");
- else
- formal_list = concat (formal_list, this_formal);
- formal_decl = TREE_CHAIN (formal_decl);
- }
- if (style == ansi)
- {
- if (!DECL_ARGUMENTS (fndecl))
- formal_list = concat (formal_list, "void");
- if (deserves_ellipsis (TREE_TYPE (fndecl)))
- formal_list = concat (formal_list, ", ...");
- }
- if ((style == ansi) || (style == k_and_r_names))
- formal_list = concat3 (" (", formal_list, ")");
- return formal_list;
-}
-
-/* Generate a string which is the source code form for a given type (t). This
- routine is ugly and complex because the C syntax for declarations is ugly
- and complex. This routine is straightforward so long as *no* pointer types,
- array types, or function types are involved.
-
- In the simple cases, this routine will return the (string) value which was
- passed in as the "ret_val" argument. Usually, this starts out either as an
- empty string, or as the name of the declared item (i.e. the formal function
- parameter variable).
-
- This routine will also return with the global variable "data_type" set to
- some string value which is the "basic" data-type of the given complete type.
- This "data_type" string can be concatenated onto the front of the returned
- string after this routine returns to its caller.
-
- In complicated cases involving pointer types, array types, or function
- types, the C declaration syntax requires an "inside out" approach, i.e. if
- you have a type which is a "pointer-to-function" type, you need to handle
- the "pointer" part first, but it also has to be "innermost" (relative to
- the declaration stuff for the "function" type). Thus, is this case, you
- must prepend a "(*" and append a ")" to the name of the item (i.e. formal
- variable). Then you must append and prepend the other info for the
- "function type" part of the overall type.
-
- To handle the "innermost precedence" rules of complicated C declarators, we
- do the following (in this routine). The input parameter called "ret_val"
- is treated as a "seed". Each time gen_type is called (perhaps recursively)
- some additional strings may be appended or prepended (or both) to the "seed"
- string. If yet another (lower) level of the GCC tree exists for the given
- type (as in the case of a pointer type, an array type, or a function type)
- then the (wrapped) seed is passed to a (recursive) invocation of gen_type()
- this recursive invocation may again "wrap" the (new) seed with yet more
- declarator stuff, by appending, prepending (or both). By the time the
- recursion bottoms out, the "seed value" at that point will have a value
- which is (almost) the complete source version of the declarator (except
- for the data_type info). Thus, this deepest "seed" value is simply passed
- back up through all of the recursive calls until it is given (as the return
- value) to the initial caller of the gen_type() routine. All that remains
- to do at this point is for the initial caller to prepend the "data_type"
- string onto the returned "seed". */
-
-static char*
-gen_type (ret_val, t, style)
- char* ret_val;
- tree t;
- formals_style style;
-{
- tree chain_p;
-
- if (TYPE_NAME (t) && DECL_NAME (TYPE_NAME (t)))
- data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
- else
- {
- switch (TREE_CODE (t))
- {
- case POINTER_TYPE:
- if (TYPE_READONLY (t))
- ret_val = concat ("const ", ret_val);
- if (TYPE_VOLATILE (t))
- ret_val = concat ("volatile ", ret_val);
-
- ret_val = concat ("*", ret_val);
-
- if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE || TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE)
- ret_val = concat3 ("(", ret_val, ")");
-
- ret_val = gen_type (ret_val, TREE_TYPE (t), style);
-
- return ret_val;
-
- case ARRAY_TYPE:
- if (TYPE_SIZE (t) == 0 || TREE_CODE (TYPE_SIZE (t)) != INTEGER_CST)
- ret_val = gen_type (concat (ret_val, "[]"), TREE_TYPE (t), style);
- else if (int_size_in_bytes (t) == 0)
- ret_val = gen_type (concat (ret_val, "[0]"), TREE_TYPE (t), style);
- else
- {
- int size = (int_size_in_bytes (t) / int_size_in_bytes (TREE_TYPE (t)));
- char buff[10];
- sprintf (buff, "[%d]", size);
- ret_val = gen_type (concat (ret_val, buff),
- TREE_TYPE (t), style);
- }
- break;
-
- case FUNCTION_TYPE:
- ret_val = gen_type (concat (ret_val, gen_formal_list_for_type (t, style)), TREE_TYPE (t), style);
- break;
-
- case IDENTIFIER_NODE:
- data_type = IDENTIFIER_POINTER (t);
- break;
-
- /* The following three cases are complicated by the fact that a
- user may do something really stupid, like creating a brand new
- "anonymous" type specification in a formal argument list (or as
- part of a function return type specification). For example:
-
- int f (enum { red, green, blue } color);
-
- In such cases, we have no name that we can put into the prototype
- to represent the (anonymous) type. Thus, we have to generate the
- whole darn type specification. Yuck! */
-
- case RECORD_TYPE:
- if (TYPE_NAME (t))
- data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
- else
- {
- data_type = "";
- chain_p = TYPE_FIELDS (t);
- while (chain_p)
- {
- data_type = concat (data_type, gen_decl (chain_p, 0, ansi));
- chain_p = TREE_CHAIN (chain_p);
- data_type = concat (data_type, "; ");
- }
- data_type = concat3 ("{ ", data_type, "}");
- }
- data_type = concat ("struct ", data_type);
- break;
-
- case UNION_TYPE:
- if (TYPE_NAME (t))
- data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
- else
- {
- data_type = "";
- chain_p = TYPE_FIELDS (t);
- while (chain_p)
- {
- data_type = concat (data_type, gen_decl (chain_p, 0, ansi));
- chain_p = TREE_CHAIN (chain_p);
- data_type = concat (data_type, "; ");
- }
- data_type = concat3 ("{ ", data_type, "}");
- }
- data_type = concat ("union ", data_type);
- break;
-
- case ENUMERAL_TYPE:
- if (TYPE_NAME (t))
- data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
- else
- {
- data_type = "";
- chain_p = TYPE_VALUES (t);
- while (chain_p)
- {
- data_type = concat (data_type,
- IDENTIFIER_POINTER (TREE_PURPOSE (chain_p)));
- chain_p = TREE_CHAIN (chain_p);
- if (chain_p)
- data_type = concat (data_type, ", ");
- }
- data_type = concat3 ("{ ", data_type, " }");
- }
- data_type = concat ("enum ", data_type);
- break;
-
- case TYPE_DECL:
- data_type = IDENTIFIER_POINTER (DECL_NAME (t));
- break;
-
- case INTEGER_TYPE:
- data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
- /* Normally, `unsigned' is part of the deal. Not so if it comes
- with `const' or `volatile'. */
- if (TREE_UNSIGNED (t) && (TYPE_READONLY (t) || TYPE_VOLATILE (t)))
- data_type = concat ("unsigned ", data_type);
- break;
-
- case REAL_TYPE:
- data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
- break;
-
- case VOID_TYPE:
- data_type = "void";
- break;
-
- default:
- abort ();
- }
- }
- if (TYPE_READONLY (t))
- ret_val = concat ("const ", ret_val);
- if (TYPE_VOLATILE (t))
- ret_val = concat ("volatile ", ret_val);
- return ret_val;
-}
-
-/* Generate a string (source) representation of an entire entity declaration
- (using some particular style for function types).
-
- The given entity may be either a variable or a function.
-
- If the "is_func_definition" parameter is non-zero, assume that the thing
- we are generating a declaration for is a FUNCTION_DECL node which is
- associated with a function definition. In this case, we can assume that
- an attached list of DECL nodes for function formal arguments is present. */
-
-static char*
-gen_decl (decl, is_func_definition, style)
- tree decl;
- int is_func_definition;
- formals_style style;
-{
- char* ret_val;
- char* outer_modifier = "";
-
- if (DECL_NAME (decl))
- ret_val = IDENTIFIER_POINTER (DECL_NAME (decl));
- else
- ret_val = "";
-
- /* If we are just generating a list of names of formal parameters, we can
- simply return the formal parameter name (with no typing information
- attached to it) now. */
-
- if (style == k_and_r_names)
- return ret_val;
-
- /* Note that for the declaration of some entity (either a function or a
- data object, like for instance a parameter) if the entity itself was
- declared as either const or volatile, then const and volatile properties
- are associated with just the declaration of the entity, and *not* with
- the `type' of the entity. Thus, for such declared entities, we have to
- generate the qualifiers here. */
-
- if (TREE_THIS_VOLATILE (decl))
- ret_val = concat ("volatile ", ret_val);
- if (TREE_READONLY (decl))
- ret_val = concat ("const ", ret_val);
-
- data_type = "";
-
- /* For FUNCTION_DECL nodes, there are two possible cases here. First, if
- this FUNCTION_DECL node was generated from a function "definition", then
- we will have a list of DECL_NODE's, one for each of the function's formal
- parameters. In this case, we can print out not only the types of each
- formal, but also each formal's name. In the second case, this
- FUNCTION_DECL node came from an actual function declaration (and *not*
- a definition). In this case, we do nothing here because the formal
- argument type-list will be output later, when the "type" of the function
- is added to the string we are building. Note that the ANSI-style formal
- parameter list is considered to be a (suffix) part of the "type" of the
- function. */
-
- if (TREE_CODE (decl) == FUNCTION_DECL && is_func_definition)
- {
- ret_val = concat (ret_val, gen_formal_list_for_func_def (decl, ansi));
-
- /* Since we have already added in the formals list stuff, here we don't
- add the whole "type" of the function we are considering (which
- would include its parameter-list info), rather, we only add in
- the "type" of the "type" of the function, which is really just
- the return-type of the function (and does not include the parameter
- list info). */
-
- ret_val = gen_type (ret_val, TREE_TYPE (TREE_TYPE (decl)), style);
- }
- else
- ret_val = gen_type (ret_val, TREE_TYPE (decl), style);
-
- ret_val = affix_data_type (ret_val);
-
- if (DECL_REGISTER (decl))
- ret_val = concat ("register ", ret_val);
- if (TREE_PUBLIC (decl))
- ret_val = concat ("extern ", ret_val);
- if (TREE_CODE (decl) == FUNCTION_DECL && !TREE_PUBLIC (decl))
- ret_val = concat ("static ", ret_val);
-
- return ret_val;
-}
-
-extern FILE* aux_info_file;
-
-/* Generate and write a new line of info to the aux-info (.X) file. This
- routine is called once for each function declaration, and once for each
- function definition (even the implicit ones). */
-
-void
-gen_aux_info_record (fndecl, is_definition, is_implicit, is_prototyped)
- tree fndecl;
- int is_definition;
- int is_implicit;
- int is_prototyped;
-{
- if (flag_gen_aux_info)
- {
- static int compiled_from_record = 0;
-
- /* Each output .X file must have a header line. Write one now if we
- have not yet done so. */
-
- if (! compiled_from_record++)
- {
- /* The first line tells which directory file names are relative to.
- Currently, -aux-info works only for files in the working
- directory, so just use a `.' as a placeholder for now. */
- fprintf (aux_info_file, "/* compiled from: . */\n");
- }
-
- /* Write the actual line of auxiliary info. */
-
- fprintf (aux_info_file, "/* %s:%d:%c%c */ %s;",
- DECL_SOURCE_FILE (fndecl),
- DECL_SOURCE_LINE (fndecl),
- (is_implicit) ? 'I' : (is_prototyped) ? 'N' : 'O',
- (is_definition) ? 'F' : 'C',
- gen_decl (fndecl, is_definition, ansi));
-
- /* If this is an explicit function declaration, we need to also write
- out an old-style (i.e. K&R) function header, just in case the user
- wants to run unprotoize. */
-
- if (is_definition)
- {
- fprintf (aux_info_file, " /*%s %s*/",
- gen_formal_list_for_func_def (fndecl, k_and_r_names),
- gen_formal_list_for_func_def (fndecl, k_and_r_decls));
- }
-
- fprintf (aux_info_file, "\n");
- }
-}
diff --git a/gnu/gcc2/cc1/c-convert.c b/gnu/gcc2/cc1/c-convert.c
deleted file mode 100644
index cfa590cfa6c2..000000000000
--- a/gnu/gcc2/cc1/c-convert.c
+++ /dev/null
@@ -1,95 +0,0 @@
-/* Language-level data type conversion for GNU C.
- Copyright (C) 1987, 1988, 1991 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-/* This file contains the functions for converting C expressions
- to different data types. The only entry point is `convert'.
- Every language front end must have a `convert' function
- but what kind of conversions it does will depend on the language. */
-
-#include "config.h"
-#include "tree.h"
-#include "flags.h"
-#include "convert.h"
-
-/* Change of width--truncation and extension of integers or reals--
- is represented with NOP_EXPR. Proper functioning of many things
- assumes that no other conversions can be NOP_EXPRs.
-
- Conversion between integer and pointer is represented with CONVERT_EXPR.
- Converting integer to real uses FLOAT_EXPR
- and real to integer uses FIX_TRUNC_EXPR.
-
- Here is a list of all the functions that assume that widening and
- narrowing is always done with a NOP_EXPR:
- In convert.c, convert_to_integer.
- In c-typeck.c, build_binary_op (boolean ops), and truthvalue_conversion.
- In expr.c: expand_expr, for operands of a MULT_EXPR.
- In fold-const.c: fold.
- In tree.c: get_narrower and get_unwidened. */
-
-/* Subroutines of `convert'. */
-
-
-
-/* Create an expression whose value is that of EXPR,
- converted to type TYPE. The TREE_TYPE of the value
- is always TYPE. This function implements all reasonable
- conversions; callers should filter out those that are
- not permitted by the language being compiled. */
-
-tree
-convert (type, expr)
- tree type, expr;
-{
- register tree e = expr;
- register enum tree_code code = TREE_CODE (type);
-
- if (type == TREE_TYPE (expr)
- || TREE_CODE (expr) == ERROR_MARK)
- return expr;
- if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (TREE_TYPE (expr)))
- return fold (build1 (NOP_EXPR, type, expr));
- if (TREE_CODE (TREE_TYPE (expr)) == ERROR_MARK)
- return error_mark_node;
- if (TREE_CODE (TREE_TYPE (expr)) == VOID_TYPE)
- {
- error ("void value not ignored as it ought to be");
- return error_mark_node;
- }
- if (code == VOID_TYPE)
- return build1 (CONVERT_EXPR, type, e);
-#if 0
- /* This is incorrect. A truncation can't be stripped this way.
- Extensions will be stripped by the use of get_unwidened. */
- if (TREE_CODE (expr) == NOP_EXPR)
- return convert (type, TREE_OPERAND (expr, 0));
-#endif
- if (code == INTEGER_TYPE || code == ENUMERAL_TYPE)
- return fold (convert_to_integer (type, e));
- if (code == POINTER_TYPE)
- return fold (convert_to_pointer (type, e));
- if (code == REAL_TYPE)
- return fold (convert_to_real (type, e));
- if (code == COMPLEX_TYPE)
- return fold (convert_to_complex (type, e));
-
- error ("conversion to non-scalar type requested");
- return error_mark_node;
-}
diff --git a/gnu/gcc2/cc1/c-decl.c b/gnu/gcc2/cc1/c-decl.c
deleted file mode 100644
index 08f003e1f0e5..000000000000
--- a/gnu/gcc2/cc1/c-decl.c
+++ /dev/null
@@ -1,6494 +0,0 @@
-/* Process declarations and variables for C compiler.
- Copyright (C) 1988, 1992 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-/* Process declarations and symbol lookup for C front end.
- Also constructs types; the standard scalar types at initialization,
- and structure, union, array and enum types when they are declared. */
-
-/* ??? not all decl nodes are given the most useful possible
- line numbers. For example, the CONST_DECLs for enum values. */
-
-#include "config.h"
-#include "tree.h"
-#include "flags.h"
-#include "c-tree.h"
-#include "c-lex.h"
-#include <stdio.h>
-
-/* In grokdeclarator, distinguish syntactic contexts of declarators. */
-enum decl_context
-{ NORMAL, /* Ordinary declaration */
- FUNCDEF, /* Function definition */
- PARM, /* Declaration of parm before function body */
- FIELD, /* Declaration inside struct or union */
- BITFIELD, /* Likewise but with specified width */
- TYPENAME}; /* Typename (inside cast or sizeof) */
-
-#ifndef CHAR_TYPE_SIZE
-#define CHAR_TYPE_SIZE BITS_PER_UNIT
-#endif
-
-#ifndef SHORT_TYPE_SIZE
-#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
-#endif
-
-#ifndef INT_TYPE_SIZE
-#define INT_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef LONG_TYPE_SIZE
-#define LONG_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef LONG_LONG_TYPE_SIZE
-#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
-#endif
-
-#ifndef WCHAR_UNSIGNED
-#define WCHAR_UNSIGNED 0
-#endif
-
-#ifndef FLOAT_TYPE_SIZE
-#define FLOAT_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef DOUBLE_TYPE_SIZE
-#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
-#endif
-
-#ifndef LONG_DOUBLE_TYPE_SIZE
-#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
-#endif
-
-/* We let tm.h override the types used here, to handle trivial differences
- such as the choice of unsigned int or long unsigned int for size_t.
- When machines start needing nontrivial differences in the size type,
- it would be best to do something here to figure out automatically
- from other information what type to use. */
-
-#ifndef SIZE_TYPE
-#define SIZE_TYPE "long unsigned int"
-#endif
-
-#ifndef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "long int"
-#endif
-
-#ifndef WCHAR_TYPE
-#define WCHAR_TYPE "int"
-#endif
-
-/* a node which has tree code ERROR_MARK, and whose type is itself.
- All erroneous expressions are replaced with this node. All functions
- that accept nodes as arguments should avoid generating error messages
- if this node is one of the arguments, since it is undesirable to get
- multiple error messages from one error in the input. */
-
-tree error_mark_node;
-
-/* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
-
-tree short_integer_type_node;
-tree integer_type_node;
-tree long_integer_type_node;
-tree long_long_integer_type_node;
-
-tree short_unsigned_type_node;
-tree unsigned_type_node;
-tree long_unsigned_type_node;
-tree long_long_unsigned_type_node;
-
-tree ptrdiff_type_node;
-
-tree unsigned_char_type_node;
-tree signed_char_type_node;
-tree char_type_node;
-tree wchar_type_node;
-tree signed_wchar_type_node;
-tree unsigned_wchar_type_node;
-
-tree float_type_node;
-tree double_type_node;
-tree long_double_type_node;
-
-tree complex_integer_type_node;
-tree complex_float_type_node;
-tree complex_double_type_node;
-tree complex_long_double_type_node;
-
-tree intQI_type_node;
-tree intHI_type_node;
-tree intSI_type_node;
-tree intDI_type_node;
-
-tree unsigned_intQI_type_node;
-tree unsigned_intHI_type_node;
-tree unsigned_intSI_type_node;
-tree unsigned_intDI_type_node;
-
-/* a VOID_TYPE node. */
-
-tree void_type_node;
-
-/* Nodes for types `void *' and `const void *'. */
-
-tree ptr_type_node, const_ptr_type_node;
-
-/* Nodes for types `char *' and `const char *'. */
-
-tree string_type_node, const_string_type_node;
-
-/* Type `char[SOMENUMBER]'.
- Used when an array of char is needed and the size is irrelevant. */
-
-tree char_array_type_node;
-
-/* Type `int[SOMENUMBER]' or something like it.
- Used when an array of int needed and the size is irrelevant. */
-
-tree int_array_type_node;
-
-/* Type `wchar_t[SOMENUMBER]' or something like it.
- Used when a wide string literal is created. */
-
-tree wchar_array_type_node;
-
-/* type `int ()' -- used for implicit declaration of functions. */
-
-tree default_function_type;
-
-/* function types `double (double)' and `double (double, double)', etc. */
-
-tree double_ftype_double, double_ftype_double_double;
-tree int_ftype_int, long_ftype_long;
-
-/* Function type `void (void *, void *, int)' and similar ones */
-
-tree void_ftype_ptr_ptr_int, int_ftype_ptr_ptr_int, void_ftype_ptr_int_int;
-
-/* Function type `char *(char *, char *)' and similar ones */
-tree string_ftype_ptr_ptr, int_ftype_string_string;
-
-/* Function type `int (const void *, const void *, size_t)' */
-tree int_ftype_cptr_cptr_sizet;
-
-/* Two expressions that are constants with value zero.
- The first is of type `int', the second of type `void *'. */
-
-tree integer_zero_node;
-tree null_pointer_node;
-
-/* A node for the integer constant 1. */
-
-tree integer_one_node;
-
-/* Nonzero if we have seen an invalid cross reference
- to a struct, union, or enum, but not yet printed the message. */
-
-tree pending_invalid_xref;
-/* File and line to appear in the eventual error message. */
-char *pending_invalid_xref_file;
-int pending_invalid_xref_line;
-
-/* While defining an enum type, this is 1 plus the last enumerator
- constant value. */
-
-static tree enum_next_value;
-
-/* Nonzero means that there was overflow computing enum_next_value. */
-
-static int enum_overflow;
-
-/* Parsing a function declarator leaves a list of parameter names
- or a chain or parameter decls here. */
-
-static tree last_function_parms;
-
-/* Parsing a function declarator leaves here a chain of structure
- and enum types declared in the parmlist. */
-
-static tree last_function_parm_tags;
-
-/* After parsing the declarator that starts a function definition,
- `start_function' puts here the list of parameter names or chain of decls.
- `store_parm_decls' finds it here. */
-
-static tree current_function_parms;
-
-/* Similar, for last_function_parm_tags. */
-static tree current_function_parm_tags;
-
-/* Similar, for the file and line that the prototype came from if this is
- an old-style definition. */
-static char *current_function_prototype_file;
-static int current_function_prototype_line;
-
-/* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
- that have names. Here so we can clear out their names' definitions
- at the end of the function. */
-
-static tree named_labels;
-
-/* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
-
-static tree shadowed_labels;
-
-/* Nonzero when store_parm_decls is called indicates a varargs function.
- Value not meaningful after store_parm_decls. */
-
-static int c_function_varargs;
-
-/* The FUNCTION_DECL for the function currently being compiled,
- or 0 if between functions. */
-tree current_function_decl;
-
-/* Set to 0 at beginning of a function definition, set to 1 if
- a return statement that specifies a return value is seen. */
-
-int current_function_returns_value;
-
-/* Set to 0 at beginning of a function definition, set to 1 if
- a return statement with no argument is seen. */
-
-int current_function_returns_null;
-
-/* Set to nonzero by `grokdeclarator' for a function
- whose return type is defaulted, if warnings for this are desired. */
-
-static int warn_about_return_type;
-
-/* Nonzero when starting a function declared `extern inline'. */
-
-static int current_extern_inline;
-
-/* For each binding contour we allocate a binding_level structure
- * which records the names defined in that contour.
- * Contours include:
- * 0) the global one
- * 1) one for each function definition,
- * where internal declarations of the parameters appear.
- * 2) one for each compound statement,
- * to record its declarations.
- *
- * The current meaning of a name can be found by searching the levels from
- * the current one out to the global one.
- */
-
-/* Note that the information in the `names' component of the global contour
- is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
-
-struct binding_level
- {
- /* A chain of _DECL nodes for all variables, constants, functions,
- and typedef types. These are in the reverse of the order supplied.
- */
- tree names;
-
- /* A list of structure, union and enum definitions,
- * for looking up tag names.
- * It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
- * or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
- * or ENUMERAL_TYPE node.
- */
- tree tags;
-
- /* For each level, a list of shadowed outer-level local definitions
- to be restored when this level is popped.
- Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
- whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
- tree shadowed;
-
- /* For each level (except not the global one),
- a chain of BLOCK nodes for all the levels
- that were entered and exited one level down. */
- tree blocks;
-
- /* The BLOCK node for this level, if one has been preallocated.
- If 0, the BLOCK is allocated (if needed) when the level is popped. */
- tree this_block;
-
- /* The binding level which this one is contained in (inherits from). */
- struct binding_level *level_chain;
-
- /* Nonzero for the level that holds the parameters of a function. */
- char parm_flag;
-
- /* Nonzero if this level "doesn't exist" for tags. */
- char tag_transparent;
-
- /* Nonzero if sublevels of this level "don't exist" for tags.
- This is set in the parm level of a function definition
- while reading the function body, so that the outermost block
- of the function body will be tag-transparent. */
- char subblocks_tag_transparent;
-
- /* Nonzero means make a BLOCK for this level regardless of all else. */
- char keep;
-
- /* Nonzero means make a BLOCK if this level has any subblocks. */
- char keep_if_subblocks;
-
- /* Number of decls in `names' that have incomplete
- structure or union types. */
- int n_incomplete;
-
- /* A list of decls giving the (reversed) specified order of parms,
- not including any forward-decls in the parmlist.
- This is so we can put the parms in proper order for assign_parms. */
- tree parm_order;
- };
-
-#define NULL_BINDING_LEVEL (struct binding_level *) NULL
-
-/* The binding level currently in effect. */
-
-static struct binding_level *current_binding_level;
-
-/* A chain of binding_level structures awaiting reuse. */
-
-static struct binding_level *free_binding_level;
-
-/* The outermost binding level, for names of file scope.
- This is created when the compiler is started and exists
- through the entire run. */
-
-static struct binding_level *global_binding_level;
-
-/* Binding level structures are initialized by copying this one. */
-
-static struct binding_level clear_binding_level
- = {NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0};
-
-/* Nonzero means unconditionally make a BLOCK for the next level pushed. */
-
-static int keep_next_level_flag;
-
-/* Nonzero means make a BLOCK for the next level pushed
- if it has subblocks. */
-
-static int keep_next_if_subblocks;
-
-/* The chain of outer levels of label scopes.
- This uses the same data structure used for binding levels,
- but it works differently: each link in the chain records
- saved values of named_labels and shadowed_labels for
- a label binding level outside the current one. */
-
-static struct binding_level *label_level_chain;
-
-/* Forward declarations. */
-
-static tree grokparms (), grokdeclarator ();
-tree pushdecl ();
-tree builtin_function ();
-void shadow_tag_warned ();
-
-static tree lookup_tag ();
-static tree lookup_tag_reverse ();
-tree lookup_name_current_level ();
-static char *redeclaration_error_message ();
-static void layout_array_type ();
-
-/* C-specific option variables. */
-
-/* Nonzero means allow type mismatches in conditional expressions;
- just make their values `void'. */
-
-int flag_cond_mismatch;
-
-/* Nonzero means give `double' the same size as `float'. */
-
-int flag_short_double;
-
-/* Nonzero means don't recognize the keyword `asm'. */
-
-int flag_no_asm;
-
-/* Nonzero means don't recognize any builtin functions. */
-
-int flag_no_builtin;
-
-/* Nonzero means don't recognize the non-ANSI builtin functions.
- -ansi sets this. */
-
-int flag_no_nonansi_builtin;
-
-/* Nonzero means do some things the same way PCC does. */
-
-int flag_traditional;
-
-/* Nonzero means to treat bitfields as signed unless they say `unsigned'. */
-
-int flag_signed_bitfields = 1;
-int explicit_flag_signed_bitfields = 0;
-
-/* Nonzero means handle `#ident' directives. 0 means ignore them. */
-
-int flag_no_ident = 0;
-
-/* Nonzero means warn about implicit declarations. */
-
-int warn_implicit;
-
-/* Nonzero means give string constants the type `const char *'
- to get extra warnings from them. These warnings will be too numerous
- to be useful, except in thoroughly ANSIfied programs. */
-
-int warn_write_strings;
-
-/* Nonzero means warn about pointer casts that can drop a type qualifier
- from the pointer target type. */
-
-int warn_cast_qual;
-
-/* Warn about traditional constructs whose meanings changed in ANSI C. */
-
-int warn_traditional;
-
-/* Nonzero means warn about sizeof(function) or addition/subtraction
- of function pointers. */
-
-int warn_pointer_arith;
-
-/* Nonzero means warn for non-prototype function decls
- or non-prototyped defs without previous prototype. */
-
-int warn_strict_prototypes;
-
-/* Nonzero means warn for any global function def
- without separate previous prototype decl. */
-
-int warn_missing_prototypes;
-
-/* Nonzero means warn about multiple (redundant) decls for the same single
- variable or function. */
-
-int warn_redundant_decls = 0;
-
-/* Nonzero means warn about extern declarations of objects not at
- file-scope level and about *all* declarations of functions (whether
- extern or static) not at file-scope level. Note that we exclude
- implicit function declarations. To get warnings about those, use
- -Wimplicit. */
-
-int warn_nested_externs = 0;
-
-/* Warn about *printf or *scanf format/argument anomalies. */
-
-int warn_format;
-
-/* Warn about a subscript that has type char. */
-
-int warn_char_subscripts = 0;
-
-/* Warn if a type conversion is done that might have confusing results. */
-
-int warn_conversion;
-
-/* Warn if adding () is suggested. */
-
-int warn_parentheses;
-
-/* Warn if initializer is not completely bracketed. */
-
-int warn_missing_braces;
-
-/* Nonzero means `$' can be in an identifier.
- See cccp.c for reasons why this breaks some obscure ANSI C programs. */
-
-#ifndef DOLLARS_IN_IDENTIFIERS
-#define DOLLARS_IN_IDENTIFIERS 1
-#endif
-int dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 1;
-
-/* Decode the string P as a language-specific option for C.
- Return 1 if it is recognized (and handle it);
- return 0 if not recognized. */
-
-int
-c_decode_option (p)
- char *p;
-{
- if (!strcmp (p, "-ftraditional") || !strcmp (p, "-traditional"))
- {
- flag_traditional = 1;
- flag_writable_strings = 1;
-#if DOLLARS_IN_IDENTIFIERS > 0
- dollars_in_ident = 1;
-#endif
- }
- else if (!strcmp (p, "-fnotraditional") || !strcmp (p, "-fno-traditional"))
- {
- flag_traditional = 0;
- flag_writable_strings = 0;
- dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 1;
- }
- else if (!strcmp (p, "-fsigned-char"))
- flag_signed_char = 1;
- else if (!strcmp (p, "-funsigned-char"))
- flag_signed_char = 0;
- else if (!strcmp (p, "-fno-signed-char"))
- flag_signed_char = 0;
- else if (!strcmp (p, "-fno-unsigned-char"))
- flag_signed_char = 1;
- else if (!strcmp (p, "-fsigned-bitfields")
- || !strcmp (p, "-fno-unsigned-bitfields"))
- {
- flag_signed_bitfields = 1;
- explicit_flag_signed_bitfields = 1;
- }
- else if (!strcmp (p, "-funsigned-bitfields")
- || !strcmp (p, "-fno-signed-bitfields"))
- {
- flag_signed_bitfields = 0;
- explicit_flag_signed_bitfields = 1;
- }
- else if (!strcmp (p, "-fshort-enums"))
- flag_short_enums = 1;
- else if (!strcmp (p, "-fno-short-enums"))
- flag_short_enums = 0;
- else if (!strcmp (p, "-fcond-mismatch"))
- flag_cond_mismatch = 1;
- else if (!strcmp (p, "-fno-cond-mismatch"))
- flag_cond_mismatch = 0;
- else if (!strcmp (p, "-fshort-double"))
- flag_short_double = 1;
- else if (!strcmp (p, "-fno-short-double"))
- flag_short_double = 0;
- else if (!strcmp (p, "-fasm"))
- flag_no_asm = 0;
- else if (!strcmp (p, "-fno-asm"))
- flag_no_asm = 1;
- else if (!strcmp (p, "-fbuiltin"))
- flag_no_builtin = 0;
- else if (!strcmp (p, "-fno-builtin"))
- flag_no_builtin = 1;
- else if (!strcmp (p, "-fno-ident"))
- flag_no_ident = 1;
- else if (!strcmp (p, "-fident"))
- flag_no_ident = 0;
- else if (!strcmp (p, "-ansi"))
- flag_no_asm = 1, flag_no_nonansi_builtin = 1, dollars_in_ident = 0;
- else if (!strcmp (p, "-Wimplicit"))
- warn_implicit = 1;
- else if (!strcmp (p, "-Wno-implicit"))
- warn_implicit = 0;
- else if (!strcmp (p, "-Wwrite-strings"))
- warn_write_strings = 1;
- else if (!strcmp (p, "-Wno-write-strings"))
- warn_write_strings = 0;
- else if (!strcmp (p, "-Wcast-qual"))
- warn_cast_qual = 1;
- else if (!strcmp (p, "-Wno-cast-qual"))
- warn_cast_qual = 0;
- else if (!strcmp (p, "-Wpointer-arith"))
- warn_pointer_arith = 1;
- else if (!strcmp (p, "-Wno-pointer-arith"))
- warn_pointer_arith = 0;
- else if (!strcmp (p, "-Wstrict-prototypes"))
- warn_strict_prototypes = 1;
- else if (!strcmp (p, "-Wno-strict-prototypes"))
- warn_strict_prototypes = 0;
- else if (!strcmp (p, "-Wmissing-prototypes"))
- warn_missing_prototypes = 1;
- else if (!strcmp (p, "-Wno-missing-prototypes"))
- warn_missing_prototypes = 0;
- else if (!strcmp (p, "-Wredundant-decls"))
- warn_redundant_decls = 1;
- else if (!strcmp (p, "-Wno-redundant-decls"))
- warn_redundant_decls = 0;
- else if (!strcmp (p, "-Wnested-externs"))
- warn_nested_externs = 1;
- else if (!strcmp (p, "-Wno-nested-externs"))
- warn_nested_externs = 0;
- else if (!strcmp (p, "-Wtraditional"))
- warn_traditional = 1;
- else if (!strcmp (p, "-Wno-traditional"))
- warn_traditional = 0;
- else if (!strcmp (p, "-Wformat"))
- warn_format = 1;
- else if (!strcmp (p, "-Wno-format"))
- warn_format = 0;
- else if (!strcmp (p, "-Wchar-subscripts"))
- warn_char_subscripts = 1;
- else if (!strcmp (p, "-Wno-char-subscripts"))
- warn_char_subscripts = 0;
- else if (!strcmp (p, "-Wconversion"))
- warn_conversion = 1;
- else if (!strcmp (p, "-Wno-conversion"))
- warn_conversion = 0;
- else if (!strcmp (p, "-Wparentheses"))
- warn_parentheses = 1;
- else if (!strcmp (p, "-Wno-parentheses"))
- warn_parentheses = 0;
- else if (!strcmp (p, "-Wreturn-type"))
- warn_return_type = 1;
- else if (!strcmp (p, "-Wno-return-type"))
- warn_return_type = 0;
- else if (!strcmp (p, "-Wcomment"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-comment"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wcomments"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-comments"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wtrigraphs"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-trigraphs"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wimport"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wno-import"))
- ; /* cpp handles this one. */
- else if (!strcmp (p, "-Wmissing-braces"))
- warn_missing_braces = 1;
- else if (!strcmp (p, "-Wno-missing-braces"))
- warn_missing_braces = 0;
- else if (!strcmp (p, "-Wall"))
- {
- extra_warnings = 1;
- /* We save the value of warn_uninitialized, since if they put
- -Wuninitialized on the command line, we need to generate a
- warning about not using it without also specifying -O. */
- if (warn_uninitialized != 1)
- warn_uninitialized = 2;
- warn_implicit = 1;
- warn_return_type = 1;
- warn_unused = 1;
- warn_switch = 1;
- warn_format = 1;
- warn_char_subscripts = 1;
- warn_parentheses = 1;
- warn_missing_braces = 1;
- }
- else
- return 0;
-
- return 1;
-}
-
-/* Hooks for print_node. */
-
-void
-print_lang_decl ()
-{
-}
-
-void
-print_lang_type ()
-{
-}
-
-void
-print_lang_identifier (file, node, indent)
- FILE *file;
- tree node;
- int indent;
-{
- print_node (file, "global", IDENTIFIER_GLOBAL_VALUE (node), indent + 4);
- print_node (file, "local", IDENTIFIER_LOCAL_VALUE (node), indent + 4);
- print_node (file, "label", IDENTIFIER_LABEL_VALUE (node), indent + 4);
- print_node (file, "implicit", IDENTIFIER_IMPLICIT_DECL (node), indent + 4);
- print_node (file, "error locus", IDENTIFIER_ERROR_LOCUS (node), indent + 4);
- print_node (file, "limbo value", IDENTIFIER_LIMBO_VALUE (node), indent + 4);
-}
-
-/* Hook called at end of compilation to assume 1 elt
- for a top-level array decl that wasn't complete before. */
-
-void
-finish_incomplete_decl (decl)
- tree decl;
-{
- if (TREE_CODE (decl) == VAR_DECL && TREE_TYPE (decl) != error_mark_node)
- {
- tree type = TREE_TYPE (decl);
- if (TREE_CODE (type) == ARRAY_TYPE
- && TYPE_DOMAIN (type) == 0
- && TREE_CODE (decl) != TYPE_DECL)
- {
- complete_array_type (type, NULL_TREE, 1);
-
- layout_decl (decl, 0);
- }
- }
-}
-
-/* Create a new `struct binding_level'. */
-
-static
-struct binding_level *
-make_binding_level ()
-{
- /* NOSTRICT */
- return (struct binding_level *) xmalloc (sizeof (struct binding_level));
-}
-
-/* Nonzero if we are currently in the global binding level. */
-
-int
-global_bindings_p ()
-{
- return current_binding_level == global_binding_level;
-}
-
-void
-keep_next_level ()
-{
- keep_next_level_flag = 1;
-}
-
-/* Nonzero if the current level needs to have a BLOCK made. */
-
-int
-kept_level_p ()
-{
- return ((current_binding_level->keep_if_subblocks
- && current_binding_level->blocks != 0)
- || current_binding_level->keep
- || current_binding_level->names != 0
- || (current_binding_level->tags != 0
- && !current_binding_level->tag_transparent));
-}
-
-/* Identify this binding level as a level of parameters.
- DEFINITION_FLAG is 1 for a definition, 0 for a declaration.
- But it turns out there is no way to pass the right value for
- DEFINITION_FLAG, so we ignore it. */
-
-void
-declare_parm_level (definition_flag)
- int definition_flag;
-{
- current_binding_level->parm_flag = 1;
-}
-
-/* Nonzero if currently making parm declarations. */
-
-int
-in_parm_level_p ()
-{
- return current_binding_level->parm_flag;
-}
-
-/* Enter a new binding level.
- If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
- not for that of tags. */
-
-void
-pushlevel (tag_transparent)
- int tag_transparent;
-{
- register struct binding_level *newlevel = NULL_BINDING_LEVEL;
-
- /* If this is the top level of a function,
- just make sure that NAMED_LABELS is 0. */
-
- if (current_binding_level == global_binding_level)
- {
- named_labels = 0;
- }
-
- /* Reuse or create a struct for this binding level. */
-
- if (free_binding_level)
- {
- newlevel = free_binding_level;
- free_binding_level = free_binding_level->level_chain;
- }
- else
- {
- newlevel = make_binding_level ();
- }
-
- /* Add this level to the front of the chain (stack) of levels that
- are active. */
-
- *newlevel = clear_binding_level;
- newlevel->tag_transparent
- = (tag_transparent
- || (current_binding_level
- ? current_binding_level->subblocks_tag_transparent
- : 0));
- newlevel->level_chain = current_binding_level;
- current_binding_level = newlevel;
- newlevel->keep = keep_next_level_flag;
- keep_next_level_flag = 0;
- newlevel->keep_if_subblocks = keep_next_if_subblocks;
- keep_next_if_subblocks = 0;
-}
-
-/* Exit a binding level.
- Pop the level off, and restore the state of the identifier-decl mappings
- that were in effect when this level was entered.
-
- If KEEP is nonzero, this level had explicit declarations, so
- and create a "block" (a BLOCK node) for the level
- to record its declarations and subblocks for symbol table output.
-
- If FUNCTIONBODY is nonzero, this level is the body of a function,
- so create a block as if KEEP were set and also clear out all
- label names.
-
- If REVERSE is nonzero, reverse the order of decls before putting
- them into the BLOCK. */
-
-tree
-poplevel (keep, reverse, functionbody)
- int keep;
- int reverse;
- int functionbody;
-{
- register tree link;
- /* The chain of decls was accumulated in reverse order.
- Put it into forward order, just for cleanliness. */
- tree decls;
- tree tags = current_binding_level->tags;
- tree subblocks = current_binding_level->blocks;
- tree block = 0;
- tree decl;
- int block_previously_created;
-
- keep |= current_binding_level->keep;
-
- /* This warning is turned off because it causes warnings for
- declarations like `extern struct foo *x'. */
-#if 0
- /* Warn about incomplete structure types in this level. */
- for (link = tags; link; link = TREE_CHAIN (link))
- if (TYPE_SIZE (TREE_VALUE (link)) == 0)
- {
- tree type = TREE_VALUE (link);
- char *errmsg;
- switch (TREE_CODE (type))
- {
- case RECORD_TYPE:
- errmsg = "`struct %s' incomplete in scope ending here";
- break;
- case UNION_TYPE:
- errmsg = "`union %s' incomplete in scope ending here";
- break;
- case ENUMERAL_TYPE:
- errmsg = "`enum %s' incomplete in scope ending here";
- break;
- }
- if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
- error (errmsg, IDENTIFIER_POINTER (TYPE_NAME (type)));
- else
- /* If this type has a typedef-name, the TYPE_NAME is a TYPE_DECL. */
- error (errmsg, IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))));
- }
-#endif /* 0 */
-
- /* Get the decls in the order they were written.
- Usually current_binding_level->names is in reverse order.
- But parameter decls were previously put in forward order. */
-
- if (reverse)
- current_binding_level->names
- = decls = nreverse (current_binding_level->names);
- else
- decls = current_binding_level->names;
-
- /* Output any nested inline functions within this block
- if they weren't already output. */
-
- for (decl = decls; decl; decl = TREE_CHAIN (decl))
- if (TREE_CODE (decl) == FUNCTION_DECL
- && ! TREE_ASM_WRITTEN (decl)
- && DECL_INITIAL (decl) != 0
- && TREE_ADDRESSABLE (decl))
- {
- /* If this decl was copied from a file-scope decl
- on account of a block-scope extern decl,
- propagate TREE_ADDRESSABLE to the file-scope decl. */
- if (DECL_ABSTRACT_ORIGIN (decl) != 0)
- TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1;
- else
- output_inline_function (decl);
- }
-
- /* If there were any declarations or structure tags in that level,
- or if this level is a function body,
- create a BLOCK to record them for the life of this function. */
-
- block = 0;
- block_previously_created = (current_binding_level->this_block != 0);
- if (block_previously_created)
- block = current_binding_level->this_block;
- else if (keep || functionbody
- || (current_binding_level->keep_if_subblocks && subblocks != 0))
- block = make_node (BLOCK);
- if (block != 0)
- {
- BLOCK_VARS (block) = decls;
- BLOCK_TYPE_TAGS (block) = tags;
- BLOCK_SUBBLOCKS (block) = subblocks;
- remember_end_note (block);
- }
-
- /* In each subblock, record that this is its superior. */
-
- for (link = subblocks; link; link = TREE_CHAIN (link))
- BLOCK_SUPERCONTEXT (link) = block;
-
- /* Clear out the meanings of the local variables of this level. */
-
- for (link = decls; link; link = TREE_CHAIN (link))
- {
- if (DECL_NAME (link) != 0)
- {
- /* If the ident. was used or addressed via a local extern decl,
- don't forget that fact. */
- if (DECL_EXTERNAL (link))
- {
- if (TREE_USED (link))
- TREE_USED (DECL_NAME (link)) = 1;
- if (TREE_ADDRESSABLE (link))
- TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1;
- }
- IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = 0;
- }
- }
-
- /* Restore all name-meanings of the outer levels
- that were shadowed by this level. */
-
- for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
- IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
-
- /* If the level being exited is the top level of a function,
- check over all the labels, and clear out the current
- (function local) meanings of their names. */
-
- if (functionbody)
- {
- /* If this is the top level block of a function,
- the vars are the function's parameters.
- Don't leave them in the BLOCK because they are
- found in the FUNCTION_DECL instead. */
-
- BLOCK_VARS (block) = 0;
-
- /* Clear out the definitions of all label names,
- since their scopes end here,
- and add them to BLOCK_VARS. */
-
- for (link = named_labels; link; link = TREE_CHAIN (link))
- {
- register tree label = TREE_VALUE (link);
-
- if (DECL_INITIAL (label) == 0)
- {
- error_with_decl (label, "label `%s' used but not defined");
- /* Avoid crashing later. */
- define_label (input_filename, lineno,
- DECL_NAME (label));
- }
- else if (warn_unused && !TREE_USED (label))
- warning_with_decl (label, "label `%s' defined but not used");
- IDENTIFIER_LABEL_VALUE (DECL_NAME (label)) = 0;
-
- /* Put the labels into the "variables" of the
- top-level block, so debugger can see them. */
- TREE_CHAIN (label) = BLOCK_VARS (block);
- BLOCK_VARS (block) = label;
- }
- }
-
- /* Pop the current level, and free the structure for reuse. */
-
- {
- register struct binding_level *level = current_binding_level;
- current_binding_level = current_binding_level->level_chain;
-
- level->level_chain = free_binding_level;
- free_binding_level = level;
- }
-
- /* Dispose of the block that we just made inside some higher level. */
- if (functionbody)
- DECL_INITIAL (current_function_decl) = block;
- else if (block)
- {
- if (!block_previously_created)
- current_binding_level->blocks
- = chainon (current_binding_level->blocks, block);
- }
- /* If we did not make a block for the level just exited,
- any blocks made for inner levels
- (since they cannot be recorded as subblocks in that level)
- must be carried forward so they will later become subblocks
- of something else. */
- else if (subblocks)
- current_binding_level->blocks
- = chainon (current_binding_level->blocks, subblocks);
-
- /* Set the TYPE_CONTEXTs for all of the tagged types belonging to this
- binding contour so that they point to the appropriate construct, i.e.
- either to the current FUNCTION_DECL node, or else to the BLOCK node
- we just constructed.
-
- Note that for tagged types whose scope is just the formal parameter
- list for some function type specification, we can't properly set
- their TYPE_CONTEXTs here, because we don't have a pointer to the
- appropriate FUNCTION_TYPE node readily available to us. For those
- cases, the TYPE_CONTEXTs of the relevant tagged type nodes get set
- in `grokdeclarator' as soon as we have created the FUNCTION_TYPE
- node which will represent the "scope" for these "parameter list local"
- tagged types.
- */
-
- if (functionbody)
- for (link = tags; link; link = TREE_CHAIN (link))
- TYPE_CONTEXT (TREE_VALUE (link)) = current_function_decl;
- else if (block)
- for (link = tags; link; link = TREE_CHAIN (link))
- TYPE_CONTEXT (TREE_VALUE (link)) = block;
-
- if (block)
- TREE_USED (block) = 1;
- return block;
-}
-
-/* Delete the node BLOCK from the current binding level.
- This is used for the block inside a stmt expr ({...})
- so that the block can be reinserted where appropriate. */
-
-void
-delete_block (block)
- tree block;
-{
- tree t;
- if (current_binding_level->blocks == block)
- current_binding_level->blocks = TREE_CHAIN (block);
- for (t = current_binding_level->blocks; t;)
- {
- if (TREE_CHAIN (t) == block)
- TREE_CHAIN (t) = TREE_CHAIN (block);
- else
- t = TREE_CHAIN (t);
- }
- TREE_CHAIN (block) = NULL;
- /* Clear TREE_USED which is always set by poplevel.
- The flag is set again if insert_block is called. */
- TREE_USED (block) = 0;
-}
-
-/* Insert BLOCK at the end of the list of subblocks of the
- current binding level. This is used when a BIND_EXPR is expanded,
- to handle the BLOCK node inside teh BIND_EXPR. */
-
-void
-insert_block (block)
- tree block;
-{
- TREE_USED (block) = 1;
- current_binding_level->blocks
- = chainon (current_binding_level->blocks, block);
-}
-
-/* Set the BLOCK node for the innermost scope
- (the one we are currently in). */
-
-void
-set_block (block)
- register tree block;
-{
- current_binding_level->this_block = block;
-}
-
-void
-push_label_level ()
-{
- register struct binding_level *newlevel;
-
- /* Reuse or create a struct for this binding level. */
-
- if (free_binding_level)
- {
- newlevel = free_binding_level;
- free_binding_level = free_binding_level->level_chain;
- }
- else
- {
- newlevel = make_binding_level ();
- }
-
- /* Add this level to the front of the chain (stack) of label levels. */
-
- newlevel->level_chain = label_level_chain;
- label_level_chain = newlevel;
-
- newlevel->names = named_labels;
- newlevel->shadowed = shadowed_labels;
- named_labels = 0;
- shadowed_labels = 0;
-}
-
-void
-pop_label_level ()
-{
- register struct binding_level *level = label_level_chain;
- tree link, prev;
-
- /* Clear out the definitions of the declared labels in this level.
- Leave in the list any ordinary, non-declared labels. */
- for (link = named_labels, prev = 0; link;)
- {
- if (C_DECLARED_LABEL_FLAG (TREE_VALUE (link)))
- {
- if (DECL_SOURCE_LINE (TREE_VALUE (link)) == 0)
- {
- error_with_decl (TREE_VALUE (link),
- "label `%s' used but not defined");
- /* Avoid crashing later. */
- define_label (input_filename, lineno,
- DECL_NAME (TREE_VALUE (link)));
- }
- else if (warn_unused && !TREE_USED (TREE_VALUE (link)))
- warning_with_decl (TREE_VALUE (link),
- "label `%s' defined but not used");
- IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link))) = 0;
-
- /* Delete this element from the list. */
- link = TREE_CHAIN (link);
- if (prev)
- TREE_CHAIN (prev) = link;
- else
- named_labels = link;
- }
- else
- {
- prev = link;
- link = TREE_CHAIN (link);
- }
- }
-
- /* Bring back all the labels that were shadowed. */
- for (link = shadowed_labels; link; link = TREE_CHAIN (link))
- if (DECL_NAME (TREE_VALUE (link)) != 0)
- IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)))
- = TREE_VALUE (link);
-
- named_labels = chainon (named_labels, level->names);
- shadowed_labels = level->shadowed;
-
- /* Pop the current level, and free the structure for reuse. */
- label_level_chain = label_level_chain->level_chain;
- level->level_chain = free_binding_level;
- free_binding_level = level;
-}
-
-/* Push a definition or a declaration of struct, union or enum tag "name".
- "type" should be the type node.
- We assume that the tag "name" is not already defined.
-
- Note that the definition may really be just a forward reference.
- In that case, the TYPE_SIZE will be zero. */
-
-void
-pushtag (name, type)
- tree name, type;
-{
- register struct binding_level *b;
-
- /* Find the proper binding level for this type tag. */
-
- for (b = current_binding_level; b->tag_transparent; b = b->level_chain)
- continue;
-
- if (name)
- {
- /* Record the identifier as the type's name if it has none. */
-
- if (TYPE_NAME (type) == 0)
- TYPE_NAME (type) = name;
- }
-
- if (b == global_binding_level)
- b->tags = perm_tree_cons (name, type, b->tags);
- else
- b->tags = saveable_tree_cons (name, type, b->tags);
-
- /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE will be the
- tagged type we just added to the current binding level. This fake
- NULL-named TYPE_DECL node helps dwarfout.c to know when it needs
- to output a representation of a tagged type, and it also gives
- us a convenient place to record the "scope start" address for the
- tagged type. */
-
- TYPE_STUB_DECL (type) = pushdecl (build_decl (TYPE_DECL, NULL_TREE, type));
-}
-
-/* Handle when a new declaration NEWDECL
- has the same name as an old one OLDDECL
- in the same binding contour.
- Prints an error message if appropriate.
-
- If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
- Otherwise, return 0. */
-
-static int
-duplicate_decls (newdecl, olddecl)
- register tree newdecl, olddecl;
-{
- int types_match = comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
- int new_is_definition = (TREE_CODE (newdecl) == FUNCTION_DECL
- && DECL_INITIAL (newdecl) != 0);
- tree oldtype = TREE_TYPE (olddecl);
- tree newtype = TREE_TYPE (newdecl);
-
- if (TREE_CODE (newtype) == ERROR_MARK
- || TREE_CODE (oldtype) == ERROR_MARK)
- types_match = 0;
-
- /* New decl is completely inconsistent with the old one =>
- tell caller to replace the old one.
- This is always an error except in the case of shadowing a builtin. */
- if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
- {
- if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_BUILT_IN (olddecl))
- {
- /* If you declare a built-in function name as static, the
- built-in definition is overridden,
- but optionally warn this was a bad choice of name. */
- if (!TREE_PUBLIC (newdecl))
- {
- if (warn_shadow)
- warning_with_decl (newdecl, "shadowing built-in function `%s'");
- }
- /* Likewise, if the built-in is not ansi, then programs can
- override it even globally without an error. */
- else if (DECL_BUILT_IN_NONANSI (olddecl))
- warning_with_decl (newdecl,
- "built-in function `%s' declared as non-function");
- else
- error_with_decl (newdecl,
- "built-in function `%s' declared as non-function");
- }
- else if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_BUILT_IN_NONANSI (olddecl))
- {
- /* If overriding decl is static,
- optionally warn this was a bad choice of name. */
- if (!TREE_PUBLIC (newdecl))
- {
- if (warn_shadow)
- warning_with_decl (newdecl, "shadowing library function `%s'");
- }
- /* Otherwise, always warn. */
- else
- warning_with_decl (newdecl,
- "library function `%s' declared as non-function");
- }
- else
- {
- error_with_decl (newdecl, "`%s' redeclared as different kind of symbol");
- error_with_decl (olddecl, "previous declaration of `%s'");
- }
-
- return 0;
- }
-
- /* For real parm decl following a forward decl,
- return 1 so old decl will be reused. */
- if (types_match && TREE_CODE (newdecl) == PARM_DECL
- && TREE_ASM_WRITTEN (olddecl) && ! TREE_ASM_WRITTEN (newdecl))
- return 1;
-
- /* The new declaration is the same kind of object as the old one.
- The declarations may partially match. Print warnings if they don't
- match enough. Ultimately, copy most of the information from the new
- decl to the old one, and keep using the old one. */
-
- if (flag_traditional && TREE_CODE (newdecl) == FUNCTION_DECL
- && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (newdecl)) == olddecl
- && DECL_INITIAL (olddecl) == 0)
- /* If -traditional, avoid error for redeclaring fcn
- after implicit decl. */
- ;
- else if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_BUILT_IN (olddecl))
- {
- /* A function declaration for a built-in function. */
- if (!TREE_PUBLIC (newdecl))
- {
- /* If you declare a built-in function name as static, the
- built-in definition is overridden,
- but optionally warn this was a bad choice of name. */
- if (warn_shadow)
- warning_with_decl (newdecl, "shadowing built-in function `%s'");
- /* Discard the old built-in function. */
- return 0;
- }
- else if (!types_match)
- {
- /* Accept the return type of the new declaration if same modes. */
- tree oldreturntype = TREE_TYPE (TREE_TYPE (olddecl));
- tree newreturntype = TREE_TYPE (TREE_TYPE (newdecl));
- if (TYPE_MODE (oldreturntype) == TYPE_MODE (newreturntype))
- {
- /* Function types may be shared, so we can't just modify
- the return type of olddecl's function type. */
- tree newtype
- = build_function_type (newreturntype,
- TYPE_ARG_TYPES (TREE_TYPE (olddecl)));
-
- types_match = comptypes (TREE_TYPE (newdecl), newtype);
- if (types_match)
- TREE_TYPE (olddecl) = newtype;
- }
- /* Accept harmless mismatch in first argument type also.
- This is for ffs. */
- if (TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != 0
- && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) != 0
- && TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (newdecl))) != 0
- && TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (olddecl))) != 0
- && (TYPE_MODE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (newdecl))))
- ==
- TYPE_MODE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (olddecl))))))
- {
- /* Function types may be shared, so we can't just modify
- the return type of olddecl's function type. */
- tree newtype
- = build_function_type (TREE_TYPE (TREE_TYPE (olddecl)),
- tree_cons (NULL_TREE,
- TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (newdecl))),
- TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (olddecl)))));
-
- types_match = comptypes (TREE_TYPE (newdecl), newtype);
- if (types_match)
- TREE_TYPE (olddecl) = newtype;
- }
- }
- if (!types_match)
- {
- /* If types don't match for a built-in, throw away the built-in. */
- warning_with_decl (newdecl, "conflicting types for built-in function `%s'");
- return 0;
- }
- }
- else if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_SOURCE_LINE (olddecl) == 0)
- {
- /* A function declaration for a predeclared function
- that isn't actually built in. */
- if (!TREE_PUBLIC (newdecl))
- {
- /* If you declare it as static, the
- default definition is overridden. */
- return 0;
- }
- else if (!types_match)
- {
- /* If the types don't match, preserve volatility indication.
- Later on, we will discard everything else about the
- default declaration. */
- TREE_THIS_VOLATILE (newdecl) |= TREE_THIS_VOLATILE (olddecl);
- }
- }
- /* Permit char *foo () to match void *foo (...) if not pedantic,
- if one of them came from a system header file. */
- else if (!types_match
- && TREE_CODE (olddecl) == FUNCTION_DECL
- && TREE_CODE (newdecl) == FUNCTION_DECL
- && TREE_CODE (TREE_TYPE (oldtype)) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (newtype)) == POINTER_TYPE
- && (DECL_IN_SYSTEM_HEADER (olddecl)
- || DECL_IN_SYSTEM_HEADER (newdecl))
- && ((TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (newtype))) == void_type_node
- && TYPE_ARG_TYPES (oldtype) == 0
- && self_promoting_args_p (TYPE_ARG_TYPES (newtype))
- && TREE_TYPE (TREE_TYPE (oldtype)) == char_type_node)
- ||
- (TREE_TYPE (TREE_TYPE (newtype)) == char_type_node
- && TYPE_ARG_TYPES (newtype) == 0
- && self_promoting_args_p (TYPE_ARG_TYPES (oldtype))
- && TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (oldtype))) == void_type_node)))
- {
- if (pedantic)
- pedwarn_with_decl (newdecl, "conflicting types for `%s'");
- /* Make sure we keep void * as ret type, not char *. */
- if (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (oldtype))) == void_type_node)
- TREE_TYPE (newdecl) = newtype = oldtype;
- }
- else if (!types_match
- /* Permit char *foo (int, ...); followed by char *foo ();
- if not pedantic. */
- && ! (TREE_CODE (olddecl) == FUNCTION_DECL
- && ! pedantic
- /* Return types must still match. */
- && comptypes (TREE_TYPE (oldtype),
- TREE_TYPE (newtype))
- && TYPE_ARG_TYPES (newtype) == 0))
- {
- error_with_decl (newdecl, "conflicting types for `%s'");
- /* Check for function type mismatch
- involving an empty arglist vs a nonempty one. */
- if (TREE_CODE (olddecl) == FUNCTION_DECL
- && comptypes (TREE_TYPE (oldtype),
- TREE_TYPE (newtype))
- && ((TYPE_ARG_TYPES (oldtype) == 0
- && DECL_INITIAL (olddecl) == 0)
- ||
- (TYPE_ARG_TYPES (newtype) == 0
- && DECL_INITIAL (newdecl) == 0)))
- {
- /* Classify the problem further. */
- register tree t = TYPE_ARG_TYPES (oldtype);
- if (t == 0)
- t = TYPE_ARG_TYPES (newtype);
- for (; t; t = TREE_CHAIN (t))
- {
- register tree type = TREE_VALUE (t);
-
- if (TREE_CHAIN (t) == 0
- && TYPE_MAIN_VARIANT (type) != void_type_node)
- {
- error ("A parameter list with an ellipsis can't match");
- error ("an empty parameter name list declaration.");
- break;
- }
-
- if (TYPE_MAIN_VARIANT (type) == float_type_node
- || C_PROMOTING_INTEGER_TYPE_P (type))
- {
- error ("An argument type that has a default promotion");
- error ("can't match an empty parameter name list declaration.");
- break;
- }
- }
- }
- error_with_decl (olddecl, "previous declaration of `%s'");
- }
- else
- {
- char *errmsg = redeclaration_error_message (newdecl, olddecl);
- if (errmsg)
- {
- error_with_decl (newdecl, errmsg);
- error_with_decl (olddecl,
- ((DECL_INITIAL (olddecl)
- && current_binding_level == global_binding_level)
- ? "`%s' previously defined here"
- : "`%s' previously declared here"));
- }
- else if (TREE_CODE (olddecl) == FUNCTION_DECL
- && DECL_INITIAL (olddecl) != 0
- && TYPE_ARG_TYPES (oldtype) == 0
- && TYPE_ARG_TYPES (newtype) != 0)
- {
- register tree type, parm;
- register int nargs;
- /* Prototype decl follows defn w/o prototype. */
-
- for (parm = TYPE_ACTUAL_ARG_TYPES (oldtype),
- type = TYPE_ARG_TYPES (newtype),
- nargs = 1;
- (TYPE_MAIN_VARIANT (TREE_VALUE (parm)) != void_type_node
- || TYPE_MAIN_VARIANT (TREE_VALUE (type)) != void_type_node);
- parm = TREE_CHAIN (parm), type = TREE_CHAIN (type), nargs++)
- {
- if (TYPE_MAIN_VARIANT (TREE_VALUE (parm)) == void_type_node
- || TYPE_MAIN_VARIANT (TREE_VALUE (type)) == void_type_node)
- {
- errmsg = "prototype for `%s' follows and number of arguments";
- break;
- }
- /* Type for passing arg must be consistent
- with that declared for the arg. */
- if (! comptypes (TREE_VALUE (parm), TREE_VALUE (type))
- /* If -traditional, allow `unsigned int' instead of `int'
- in the prototype. */
- && (! (flag_traditional
- && TYPE_MAIN_VARIANT (TREE_VALUE (parm)) == integer_type_node
- && TYPE_MAIN_VARIANT (TREE_VALUE (type)) == unsigned_type_node)))
- {
- errmsg = "prototype for `%s' follows and argument %d";
- break;
- }
- }
- if (errmsg)
- {
- error_with_decl (newdecl, errmsg, nargs);
- error_with_decl (olddecl,
- "doesn't match non-prototype definition here");
- }
- else
- {
- warning_with_decl (newdecl, "prototype for `%s' follows");
- warning_with_decl (olddecl, "non-prototype definition here");
- }
- }
- /* Warn about mismatches in various flags. */
- else
- {
- /* Warn if function is now inline
- but was previously declared not inline and has been called. */
- if (TREE_CODE (olddecl) == FUNCTION_DECL
- && ! DECL_INLINE (olddecl) && DECL_INLINE (newdecl)
- && TREE_USED (olddecl))
- warning_with_decl (newdecl,
- "`%s' declared inline after being called");
- if (TREE_CODE (olddecl) == FUNCTION_DECL
- && ! DECL_INLINE (olddecl) && DECL_INLINE (newdecl)
- && DECL_INITIAL (olddecl) != 0)
- warning_with_decl (newdecl,
- "`%s' declared inline after its definition");
- /* It is nice to warn when a function is declared
- global first and then static. */
- if (TREE_CODE (olddecl) == FUNCTION_DECL
- && TREE_PUBLIC (olddecl)
- && !TREE_PUBLIC (newdecl))
- warning_with_decl (newdecl, "static declaration for `%s' follows non-static");
-
- /* These bits are logically part of the type, for variables.
- But not for functions
- (where qualifiers are not valid ANSI anyway). */
- if (pedantic && TREE_CODE (olddecl) != FUNCTION_DECL
- && (TREE_READONLY (newdecl) != TREE_READONLY (olddecl)
- || TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl)))
- pedwarn_with_decl (newdecl, "type qualifiers for `%s' conflict with previous decl");
- }
- }
-
- /* Optionally warn about more than one declaration for the same name. */
- if (warn_redundant_decls && DECL_SOURCE_LINE (olddecl) != 0
- /* Dont warn about a function declaration
- followed by a definition. */
- && !(TREE_CODE (newdecl) == FUNCTION_DECL && DECL_INITIAL (newdecl) != 0
- && DECL_INITIAL (olddecl) == 0))
- {
- warning_with_decl (newdecl, "redundant redeclaration of `%s' in same scope");
- warning_with_decl (olddecl, "previous declaration of `%s'");
- }
-
- /* Copy all the DECL_... slots specified in the new decl
- except for any that we copy here from the old type.
-
- Past this point, we don't change OLDTYPE and NEWTYPE
- even if we change the types of NEWDECL and OLDDECL. */
-
- if (types_match)
- {
- /* Merge the data types specified in the two decls. */
- if (TREE_CODE (newdecl) != FUNCTION_DECL || !DECL_BUILT_IN (olddecl))
- TREE_TYPE (newdecl)
- = TREE_TYPE (olddecl)
- = common_type (newtype, oldtype);
-
- /* Lay the type out, unless already done. */
- if (oldtype != TREE_TYPE (newdecl))
- {
- if (TREE_TYPE (newdecl) != error_mark_node)
- layout_type (TREE_TYPE (newdecl));
- if (TREE_CODE (newdecl) != FUNCTION_DECL
- && TREE_CODE (newdecl) != TYPE_DECL
- && TREE_CODE (newdecl) != CONST_DECL)
- layout_decl (newdecl, 0);
- }
- else
- {
- /* Since the type is OLDDECL's, make OLDDECL's size go with. */
- DECL_SIZE (newdecl) = DECL_SIZE (olddecl);
- if (TREE_CODE (olddecl) != FUNCTION_DECL)
- if (DECL_ALIGN (olddecl) > DECL_ALIGN (newdecl))
- DECL_ALIGN (newdecl) = DECL_ALIGN (olddecl);
- }
-
- /* Keep the old rtl since we can safely use it. */
- DECL_RTL (newdecl) = DECL_RTL (olddecl);
-
- /* Merge the type qualifiers. */
- if (DECL_BUILT_IN_NONANSI (olddecl) && TREE_THIS_VOLATILE (olddecl)
- && !TREE_THIS_VOLATILE (newdecl))
- TREE_THIS_VOLATILE (olddecl) = 0;
- if (TREE_READONLY (newdecl))
- TREE_READONLY (olddecl) = 1;
- if (TREE_THIS_VOLATILE (newdecl))
- {
- TREE_THIS_VOLATILE (olddecl) = 1;
- if (TREE_CODE (newdecl) == VAR_DECL)
- make_var_volatile (newdecl);
- }
-
- /* Keep source location of definition rather than declaration. */
- if (DECL_INITIAL (newdecl) == 0 && DECL_INITIAL (olddecl) != 0)
- {
- DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl);
- DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl);
- }
-
- /* Merge the unused-warning information. */
- if (DECL_IN_SYSTEM_HEADER (olddecl))
- DECL_IN_SYSTEM_HEADER (newdecl) = 1;
- else if (DECL_IN_SYSTEM_HEADER (newdecl))
- DECL_IN_SYSTEM_HEADER (olddecl) = 1;
-
- /* Merge the initialization information. */
- if (DECL_INITIAL (newdecl) == 0)
- DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
- }
- /* If cannot merge, then use the new type and qualifiers,
- and don't preserve the old rtl. */
- else
- {
- TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
- TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
- TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
- TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
- }
-
- /* Merge the storage class information. */
- /* For functions, static overrides non-static. */
- if (TREE_CODE (newdecl) == FUNCTION_DECL)
- {
- TREE_PUBLIC (newdecl) &= TREE_PUBLIC (olddecl);
- /* This is since we don't automatically
- copy the attributes of NEWDECL into OLDDECL. */
- TREE_PUBLIC (olddecl) = TREE_PUBLIC (newdecl);
- /* If this clears `static', clear it in the identifier too. */
- if (! TREE_PUBLIC (olddecl))
- TREE_PUBLIC (DECL_NAME (olddecl)) = 0;
- }
- if (DECL_EXTERNAL (newdecl))
- {
- TREE_STATIC (newdecl) = TREE_STATIC (olddecl);
- DECL_EXTERNAL (newdecl) = DECL_EXTERNAL (olddecl);
- /* An extern decl does not override previous storage class. */
- TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
- }
- else
- {
- TREE_STATIC (olddecl) = TREE_STATIC (newdecl);
- TREE_PUBLIC (olddecl) = TREE_PUBLIC (newdecl);
- }
-
- /* If either decl says `inline', this fn is inline,
- unless its definition was passed already. */
- if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == 0)
- DECL_INLINE (olddecl) = 1;
- DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
-
- /* Get rid of any built-in function if new arg types don't match it
- or if we have a function definition. */
- if (TREE_CODE (newdecl) == FUNCTION_DECL
- && DECL_BUILT_IN (olddecl)
- && (!types_match || new_is_definition))
- {
- TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
- DECL_BUILT_IN (olddecl) = 0;
- }
-
- /* If redeclaring a builtin function, and not a definition,
- it stays built in.
- Also preserve various other info from the definition. */
- if (TREE_CODE (newdecl) == FUNCTION_DECL && !new_is_definition)
- {
- if (DECL_BUILT_IN (olddecl))
- {
- DECL_BUILT_IN (newdecl) = 1;
- DECL_SET_FUNCTION_CODE (newdecl, DECL_FUNCTION_CODE (olddecl));
- }
- else
- DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl);
-
- DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
- DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
- DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl);
- DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
- }
-
- /* Copy most of the decl-specific fields of NEWDECL into OLDDECL.
- But preserve OLDdECL's DECL_UID. */
- {
- register unsigned olddecl_uid = DECL_UID (olddecl);
-
- bcopy ((char *) newdecl + sizeof (struct tree_common),
- (char *) olddecl + sizeof (struct tree_common),
- sizeof (struct tree_decl) - sizeof (struct tree_common));
- DECL_UID (olddecl) = olddecl_uid;
- }
-
- return 1;
-}
-
-/* Record a decl-node X as belonging to the current lexical scope.
- Check for errors (such as an incompatible declaration for the same
- name already seen in the same scope).
-
- Returns either X or an old decl for the same name.
- If an old decl is returned, it may have been smashed
- to agree with what X says. */
-
-tree
-pushdecl (x)
- tree x;
-{
- register tree t;
- register tree name = DECL_NAME (x);
- register struct binding_level *b = current_binding_level;
-
- DECL_CONTEXT (x) = current_function_decl;
- /* A local extern declaration for a function doesn't constitute nesting.
- A local auto declaration does, since it's a forward decl
- for a nested function coming later. */
- if (TREE_CODE (x) == FUNCTION_DECL && DECL_INITIAL (x) == 0
- && DECL_EXTERNAL (x))
- DECL_CONTEXT (x) = 0;
-
- if (warn_nested_externs && DECL_EXTERNAL (x) && b != global_binding_level
- && x != IDENTIFIER_IMPLICIT_DECL (name))
- warning ("nested extern declaration of `%s'", IDENTIFIER_POINTER (name));
-
- if (name)
- {
- char *file;
- int line;
-
- t = lookup_name_current_level (name);
- if (t != 0 && t == error_mark_node)
- /* error_mark_node is 0 for a while during initialization! */
- {
- t = 0;
- error_with_decl (x, "`%s' used prior to declaration");
- }
-
- if (t != 0)
- {
- file = DECL_SOURCE_FILE (t);
- line = DECL_SOURCE_LINE (t);
- }
-
- if (t != 0 && duplicate_decls (x, t))
- {
- if (TREE_CODE (t) == PARM_DECL)
- {
- /* Don't allow more than one "real" duplicate
- of a forward parm decl. */
- TREE_ASM_WRITTEN (t) = TREE_ASM_WRITTEN (x);
- return t;
- }
- /* If this decl is `static' and an implicit decl was seen previously,
- warn. But don't complain if -traditional,
- since traditional compilers don't complain. */
- if (!flag_traditional && TREE_PUBLIC (name)
- && ! TREE_PUBLIC (x) && ! DECL_EXTERNAL (x)
- /* We used to warn also for explicit extern followed by static,
- but sometimes you need to do it that way. */
- && IDENTIFIER_IMPLICIT_DECL (name) != 0)
- {
- pedwarn ("`%s' was declared implicitly `extern' and later `static'",
- IDENTIFIER_POINTER (name));
- pedwarn_with_file_and_line (file, line,
- "previous declaration of `%s'",
- IDENTIFIER_POINTER (name));
- }
-
- return t;
- }
-
- /* If we are processing a typedef statement, generate a whole new
- ..._TYPE node (which will be just an variant of the existing
- ..._TYPE node with identical properties) and then install the
- TYPE_DECL node generated to represent the typedef name as the
- TYPE_NAME of this brand new (duplicate) ..._TYPE node.
-
- The whole point here is to end up with a situation where each
- and every ..._TYPE node the compiler creates will be uniquely
- associated with AT MOST one node representing a typedef name.
- This way, even though the compiler substitutes corresponding
- ..._TYPE nodes for TYPE_DECL (i.e. "typedef name") nodes very
- early on, later parts of the compiler can always do the reverse
- translation and get back the corresponding typedef name. For
- example, given:
-
- typedef struct S MY_TYPE;
- MY_TYPE object;
-
- Later parts of the compiler might only know that `object' was of
- type `struct S' if if were not for code just below. With this
- code however, later parts of the compiler see something like:
-
- struct S' == struct S
- typedef struct S' MY_TYPE;
- struct S' object;
-
- And they can then deduce (from the node for type struct S') that
- the original object declaration was:
-
- MY_TYPE object;
-
- Being able to do this is important for proper support of protoize,
- and also for generating precise symbolic debugging information
- which takes full account of the programmer's (typedef) vocabulary.
-
- Obviously, we don't want to generate a duplicate ..._TYPE node if
- the TYPE_DECL node that we are now processing really represents a
- standard built-in type.
-
- Since all standard types are effectively declared at line zero
- in the source file, we can easily check to see if we are working
- on a standard type by checking the current value of lineno. */
-
- if (TREE_CODE (x) == TYPE_DECL)
- {
- if (DECL_SOURCE_LINE (x) == 0)
- {
- if (TYPE_NAME (TREE_TYPE (x)) == 0)
- TYPE_NAME (TREE_TYPE (x)) = x;
- }
- else if (TREE_TYPE (x) != error_mark_node)
- {
- tree tt = TREE_TYPE (x);
-
- tt = build_type_copy (tt);
- TYPE_NAME (tt) = x;
- TREE_TYPE (x) = tt;
- }
- }
-
- /* Multiple external decls of the same identifier ought to match.
- Check against both global declarations and out of scope (limbo) block
- level declarations.
-
- We get warnings about inline functions where they are defined.
- Avoid duplicate warnings where they are used. */
- if (TREE_PUBLIC (x) && ! DECL_INLINE (x))
- {
- tree decl;
-
- if (IDENTIFIER_GLOBAL_VALUE (name) != 0
- && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name))
- || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name))))
- decl = IDENTIFIER_GLOBAL_VALUE (name);
- else if (IDENTIFIER_LIMBO_VALUE (name) != 0)
- /* Decls in limbo are always extern, so no need to check that. */
- decl = IDENTIFIER_LIMBO_VALUE (name);
- else
- decl = 0;
-
- if (decl && ! comptypes (TREE_TYPE (x), TREE_TYPE (decl))
- /* If old decl is built-in, we already warned if we should. */
- && !DECL_BUILT_IN (decl))
- {
- pedwarn_with_decl (x,
- "type mismatch with previous external decl");
- pedwarn_with_decl (decl, "previous external decl of `%s'");
- }
- }
-
- /* If a function has had an implicit declaration, and then is defined,
- make sure they are compatible. */
-
- if (IDENTIFIER_IMPLICIT_DECL (name) != 0
- && IDENTIFIER_GLOBAL_VALUE (name) == 0
- && TREE_CODE (x) == FUNCTION_DECL
- && ! comptypes (TREE_TYPE (x),
- TREE_TYPE (IDENTIFIER_IMPLICIT_DECL (name))))
- {
- warning_with_decl (x, "type mismatch with previous implicit declaration");
- warning_with_decl (IDENTIFIER_IMPLICIT_DECL (name),
- "previous implicit declaration of `%s'");
- }
-
- /* In PCC-compatibility mode, extern decls of vars with no current decl
- take effect at top level no matter where they are. */
- if (flag_traditional && DECL_EXTERNAL (x)
- && lookup_name (name) == 0)
- {
- tree type = TREE_TYPE (x);
-
- /* But don't do this if the type contains temporary nodes. */
- while (type)
- {
- if (type == error_mark_node)
- break;
- if (! TREE_PERMANENT (type))
- {
- warning_with_decl (x, "type of external `%s' is not global");
- /* By exiting the loop early, we leave TYPE nonzero,
- and thus prevent globalization of the decl. */
- break;
- }
- else if (TREE_CODE (type) == FUNCTION_TYPE
- && TYPE_ARG_TYPES (type) != 0)
- /* The types might not be truly local,
- but the list of arg types certainly is temporary.
- Since prototypes are nontraditional,
- ok not to do the traditional thing. */
- break;
- type = TREE_TYPE (type);
- }
-
- if (type == 0)
- b = global_binding_level;
- }
-
- /* This name is new in its binding level.
- Install the new declaration and return it. */
- if (b == global_binding_level)
- {
- /* Install a global value. */
-
- /* If the first global decl has external linkage,
- warn if we later see static one. */
- if (IDENTIFIER_GLOBAL_VALUE (name) == 0 && TREE_PUBLIC (x))
- TREE_PUBLIC (name) = 1;
-
- IDENTIFIER_GLOBAL_VALUE (name) = x;
-
- /* We no longer care about any previous block level declarations. */
- IDENTIFIER_LIMBO_VALUE (name) = 0;
-
- /* Don't forget if the function was used via an implicit decl. */
- if (IDENTIFIER_IMPLICIT_DECL (name)
- && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name)))
- TREE_USED (x) = 1, TREE_USED (name) = 1;
-
- /* Don't forget if its address was taken in that way. */
- if (IDENTIFIER_IMPLICIT_DECL (name)
- && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name)))
- TREE_ADDRESSABLE (x) = 1;
-
- /* Warn about mismatches against previous implicit decl. */
- if (IDENTIFIER_IMPLICIT_DECL (name) != 0
- /* If this real decl matches the implicit, don't complain. */
- && ! (TREE_CODE (x) == FUNCTION_DECL
- && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (x)))
- == integer_type_node)))
- pedwarn ("`%s' was previously implicitly declared to return `int'",
- IDENTIFIER_POINTER (name));
-
- /* If this decl is `static' and an `extern' was seen previously,
- that is erroneous. */
- if (TREE_PUBLIC (name)
- && ! TREE_PUBLIC (x) && ! DECL_EXTERNAL (x))
- {
- /* Okay to redeclare an ANSI built-in as static. */
- if (t != 0 && DECL_BUILT_IN (t))
- ;
- /* Okay to declare a non-ANSI built-in as anything. */
- else if (t != 0 && DECL_BUILT_IN_NONANSI (t))
- ;
- else if (IDENTIFIER_IMPLICIT_DECL (name))
- pedwarn ("`%s' was declared implicitly `extern' and later `static'",
- IDENTIFIER_POINTER (name));
- else
- pedwarn ("`%s' was declared `extern' and later `static'",
- IDENTIFIER_POINTER (name));
- }
- }
- else
- {
- /* Here to install a non-global value. */
- tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
- tree oldglobal = IDENTIFIER_GLOBAL_VALUE (name);
- IDENTIFIER_LOCAL_VALUE (name) = x;
-
- /* If this is an extern function declaration, see if we
- have a global definition or declaration for the function. */
- if (oldlocal == 0
- && DECL_EXTERNAL (x) && !DECL_INLINE (x)
- && oldglobal != 0
- && TREE_CODE (x) == FUNCTION_DECL
- && TREE_CODE (oldglobal) == FUNCTION_DECL)
- {
- /* We have one. Their types must agree. */
- if (! comptypes (TREE_TYPE (x),
- TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (name))))
- pedwarn_with_decl (x, "extern declaration of `%s' doesn't match global one");
- else
- {
- /* Inner extern decl is inline if global one is.
- Copy enough to really inline it. */
- if (DECL_INLINE (oldglobal))
- {
- DECL_INLINE (x) = DECL_INLINE (oldglobal);
- DECL_INITIAL (x) = (current_function_decl == oldglobal
- ? 0 : DECL_INITIAL (oldglobal));
- DECL_SAVED_INSNS (x) = DECL_SAVED_INSNS (oldglobal);
- DECL_FRAME_SIZE (x) = DECL_FRAME_SIZE (oldglobal);
- DECL_ARGUMENTS (x) = DECL_ARGUMENTS (oldglobal);
- DECL_RESULT (x) = DECL_RESULT (oldglobal);
- TREE_ASM_WRITTEN (x) = TREE_ASM_WRITTEN (oldglobal);
- DECL_ABSTRACT_ORIGIN (x) = oldglobal;
- }
- /* Inner extern decl is built-in if global one is. */
- if (DECL_BUILT_IN (oldglobal))
- {
- DECL_BUILT_IN (x) = DECL_BUILT_IN (oldglobal);
- DECL_SET_FUNCTION_CODE (x, DECL_FUNCTION_CODE (oldglobal));
- }
- /* Keep the arg types from a file-scope fcn defn. */
- if (TYPE_ARG_TYPES (TREE_TYPE (oldglobal)) != 0
- && DECL_INITIAL (oldglobal)
- && TYPE_ARG_TYPES (TREE_TYPE (x)) == 0)
- TREE_TYPE (x) = TREE_TYPE (oldglobal);
- }
- }
-
-#if 0 /* This case is probably sometimes the right thing to do. */
- /* If we have a local external declaration,
- then any file-scope declaration should not
- have been static. */
- if (oldlocal == 0 && oldglobal != 0
- && !TREE_PUBLIC (oldglobal)
- && DECL_EXTERNAL (x) && TREE_PUBLIC (x))
- warning ("`%s' locally external but globally static",
- IDENTIFIER_POINTER (name));
-#endif
-
- /* If we have a local external declaration,
- and no file-scope declaration has yet been seen,
- then if we later have a file-scope decl it must not be static. */
- if (oldlocal == 0
- && oldglobal == 0
- && DECL_EXTERNAL (x)
- && TREE_PUBLIC (x))
- {
- TREE_PUBLIC (name) = 1;
-
- /* Save this decl, so that we can do type checking against
- other decls after it falls out of scope.
-
- Only save it once. This prevents temporary decls created in
- expand_inline_function from being used here, since this
- will have been set when the inline function was parsed.
- It also helps give slightly better warnings. */
- if (IDENTIFIER_LIMBO_VALUE (name) == 0)
- IDENTIFIER_LIMBO_VALUE (name) = x;
- }
-
- /* Warn if shadowing an argument at the top level of the body. */
- if (oldlocal != 0 && !DECL_EXTERNAL (x)
- /* This warning doesn't apply to the parms of a nested fcn. */
- && ! current_binding_level->parm_flag
- /* Check that this is one level down from the parms. */
- && current_binding_level->level_chain->parm_flag
- /* Check that the decl being shadowed
- comes from the parm level, one level up. */
- && chain_member (oldlocal, current_binding_level->level_chain->names))
- {
- if (TREE_CODE (oldlocal) == PARM_DECL)
- pedwarn ("declaration of `%s' shadows a parameter",
- IDENTIFIER_POINTER (name));
- else
- pedwarn ("declaration of `%s' shadows a symbol from the parameter list",
- IDENTIFIER_POINTER (name));
- }
-
- /* Maybe warn if shadowing something else. */
- else if (warn_shadow && !DECL_EXTERNAL (x)
- /* No shadow warnings for internally generated vars. */
- && DECL_SOURCE_LINE (x) != 0
- /* No shadow warnings for vars made for inlining. */
- && ! DECL_FROM_INLINE (x))
- {
- char *warnstring = 0;
-
- if (TREE_CODE (x) == PARM_DECL
- && current_binding_level->level_chain->parm_flag)
- /* Don't warn about the parm names in function declarator
- within a function declarator.
- It would be nice to avoid warning in any function
- declarator in a declaration, as opposed to a definition,
- but there is no way to tell it's not a definition. */
- ;
- else if (oldlocal != 0 && TREE_CODE (oldlocal) == PARM_DECL)
- warnstring = "declaration of `%s' shadows a parameter";
- else if (oldlocal != 0)
- warnstring = "declaration of `%s' shadows previous local";
- else if (IDENTIFIER_GLOBAL_VALUE (name) != 0
- && IDENTIFIER_GLOBAL_VALUE (name) != error_mark_node)
- warnstring = "declaration of `%s' shadows global declaration";
-
- if (warnstring)
- warning (warnstring, IDENTIFIER_POINTER (name));
- }
-
- /* If storing a local value, there may already be one (inherited).
- If so, record it for restoration when this binding level ends. */
- if (oldlocal != 0)
- b->shadowed = tree_cons (name, oldlocal, b->shadowed);
- }
-
- /* Keep count of variables in this level with incomplete type. */
- if (TYPE_SIZE (TREE_TYPE (x)) == 0)
- ++b->n_incomplete;
- }
-
- /* Put decls on list in reverse order.
- We will reverse them later if necessary. */
- TREE_CHAIN (x) = b->names;
- b->names = x;
-
- return x;
-}
-
-/* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL, if appropriate. */
-
-tree
-pushdecl_top_level (x)
- tree x;
-{
- register tree t;
- register struct binding_level *b = current_binding_level;
-
- current_binding_level = global_binding_level;
- t = pushdecl (x);
- current_binding_level = b;
- return t;
-}
-
-/* Generate an implicit declaration for identifier FUNCTIONID
- as a function of type int (). Print a warning if appropriate. */
-
-tree
-implicitly_declare (functionid)
- tree functionid;
-{
- register tree decl;
- int traditional_warning = 0;
- /* Only one "implicit declaration" warning per identifier. */
- int implicit_warning;
-
- /* Save the decl permanently so we can warn if definition follows. */
- push_obstacks_nochange ();
- end_temporary_allocation ();
-
- /* We used to reuse an old implicit decl here,
- but this loses with inline functions because it can clobber
- the saved decl chains. */
-/* if (IDENTIFIER_IMPLICIT_DECL (functionid) != 0)
- decl = IDENTIFIER_IMPLICIT_DECL (functionid);
- else */
- decl = build_decl (FUNCTION_DECL, functionid, default_function_type);
-
- /* Warn of implicit decl following explicit local extern decl.
- This is probably a program designed for traditional C. */
- if (TREE_PUBLIC (functionid) && IDENTIFIER_GLOBAL_VALUE (functionid) == 0)
- traditional_warning = 1;
-
- /* Warn once of an implicit declaration. */
- implicit_warning = (IDENTIFIER_IMPLICIT_DECL (functionid) == 0);
-
- DECL_EXTERNAL (decl) = 1;
- TREE_PUBLIC (decl) = 1;
-
- /* Record that we have an implicit decl and this is it. */
- IDENTIFIER_IMPLICIT_DECL (functionid) = decl;
-
- /* ANSI standard says implicit declarations are in the innermost block.
- So we record the decl in the standard fashion.
- If flag_traditional is set, pushdecl does it top-level. */
- pushdecl (decl);
-
- /* This is a no-op in c-lang.c or something real in objc-actions.c. */
- maybe_objc_check_decl (decl);
-
- rest_of_decl_compilation (decl, NULL_PTR, 0, 0);
-
- if (warn_implicit && implicit_warning)
- warning ("implicit declaration of function `%s'",
- IDENTIFIER_POINTER (functionid));
- else if (warn_traditional && traditional_warning)
- warning ("function `%s' was previously declared within a block",
- IDENTIFIER_POINTER (functionid));
-
- /* Write a record describing this implicit function declaration to the
- prototypes file (if requested). */
-
- gen_aux_info_record (decl, 0, 1, 0);
-
- pop_obstacks ();
-
- return decl;
-}
-
-/* Return zero if the declaration NEWDECL is valid
- when the declaration OLDDECL (assumed to be for the same name)
- has already been seen.
- Otherwise return an error message format string with a %s
- where the identifier should go. */
-
-static char *
-redeclaration_error_message (newdecl, olddecl)
- tree newdecl, olddecl;
-{
- if (TREE_CODE (newdecl) == TYPE_DECL)
- {
- if (flag_traditional && TREE_TYPE (newdecl) == TREE_TYPE (olddecl))
- return 0;
- return "redefinition of `%s'";
- }
- else if (TREE_CODE (newdecl) == FUNCTION_DECL)
- {
- /* Declarations of functions can insist on internal linkage
- but they can't be inconsistent with internal linkage,
- so there can be no error on that account.
- However defining the same name twice is no good. */
- if (DECL_INITIAL (olddecl) != 0 && DECL_INITIAL (newdecl) != 0
- /* However, defining once as extern inline and a second
- time in another way is ok. */
- && !(DECL_INLINE (olddecl) && DECL_EXTERNAL (olddecl)
- && !(DECL_INLINE (newdecl) && DECL_EXTERNAL (newdecl))))
- return "redefinition of `%s'";
- return 0;
- }
- else if (current_binding_level == global_binding_level)
- {
- /* Objects declared at top level: */
- /* If at least one is a reference, it's ok. */
- if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
- return 0;
- /* Reject two definitions. */
- if (DECL_INITIAL (olddecl) != 0 && DECL_INITIAL (newdecl) != 0)
- return "redefinition of `%s'";
- /* Now we have two tentative defs, or one tentative and one real def. */
- /* Insist that the linkage match. */
- if (TREE_PUBLIC (olddecl) != TREE_PUBLIC (newdecl))
- return "conflicting declarations of `%s'";
- return 0;
- }
- else if (current_binding_level->parm_flag
- && TREE_ASM_WRITTEN (olddecl) && !TREE_ASM_WRITTEN (newdecl))
- return 0;
- else
- {
- /* Objects declared with block scope: */
- /* Reject two definitions, and reject a definition
- together with an external reference. */
- if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
- return "redeclaration of `%s'";
- return 0;
- }
-}
-
-/* Get the LABEL_DECL corresponding to identifier ID as a label.
- Create one if none exists so far for the current function.
- This function is called for both label definitions and label references. */
-
-tree
-lookup_label (id)
- tree id;
-{
- register tree decl = IDENTIFIER_LABEL_VALUE (id);
-
- if (current_function_decl == 0)
- {
- error ("label %s referenced outside of any function",
- IDENTIFIER_POINTER (id));
- return 0;
- }
-
- /* Use a label already defined or ref'd with this name. */
- if (decl != 0)
- {
- /* But not if it is inherited and wasn't declared to be inheritable. */
- if (DECL_CONTEXT (decl) != current_function_decl
- && ! C_DECLARED_LABEL_FLAG (decl))
- return shadow_label (id);
- return decl;
- }
-
- decl = build_decl (LABEL_DECL, id, void_type_node);
-
- /* Make sure every label has an rtx. */
- label_rtx (decl);
-
- /* A label not explicitly declared must be local to where it's ref'd. */
- DECL_CONTEXT (decl) = current_function_decl;
-
- DECL_MODE (decl) = VOIDmode;
-
- /* Say where one reference is to the label,
- for the sake of the error if it is not defined. */
- DECL_SOURCE_LINE (decl) = lineno;
- DECL_SOURCE_FILE (decl) = input_filename;
-
- IDENTIFIER_LABEL_VALUE (id) = decl;
-
- named_labels = tree_cons (NULL_TREE, decl, named_labels);
-
- return decl;
-}
-
-/* Make a label named NAME in the current function,
- shadowing silently any that may be inherited from containing functions
- or containing scopes.
-
- Note that valid use, if the label being shadowed
- comes from another scope in the same function,
- requires calling declare_nonlocal_label right away. */
-
-tree
-shadow_label (name)
- tree name;
-{
- register tree decl = IDENTIFIER_LABEL_VALUE (name);
-
- if (decl != 0)
- {
- shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
- IDENTIFIER_LABEL_VALUE (name) = decl = 0;
- }
-
- return lookup_label (name);
-}
-
-/* Define a label, specifying the location in the source file.
- Return the LABEL_DECL node for the label, if the definition is valid.
- Otherwise return 0. */
-
-tree
-define_label (filename, line, name)
- char *filename;
- int line;
- tree name;
-{
- tree decl = lookup_label (name);
-
- /* If label with this name is known from an outer context, shadow it. */
- if (decl != 0 && DECL_CONTEXT (decl) != current_function_decl)
- {
- shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
- IDENTIFIER_LABEL_VALUE (name) = 0;
- decl = lookup_label (name);
- }
-
- if (DECL_INITIAL (decl) != 0)
- {
- error ("duplicate label `%s'", IDENTIFIER_POINTER (name));
- return 0;
- }
- else
- {
- /* Mark label as having been defined. */
- DECL_INITIAL (decl) = error_mark_node;
- /* Say where in the source. */
- DECL_SOURCE_FILE (decl) = filename;
- DECL_SOURCE_LINE (decl) = line;
- return decl;
- }
-}
-
-/* Return the list of declarations of the current level.
- Note that this list is in reverse order unless/until
- you nreverse it; and when you do nreverse it, you must
- store the result back using `storedecls' or you will lose. */
-
-tree
-getdecls ()
-{
- return current_binding_level->names;
-}
-
-/* Return the list of type-tags (for structs, etc) of the current level. */
-
-tree
-gettags ()
-{
- return current_binding_level->tags;
-}
-
-/* Store the list of declarations of the current level.
- This is done for the parameter declarations of a function being defined,
- after they are modified in the light of any missing parameters. */
-
-static void
-storedecls (decls)
- tree decls;
-{
- current_binding_level->names = decls;
-}
-
-/* Similarly, store the list of tags of the current level. */
-
-static void
-storetags (tags)
- tree tags;
-{
- current_binding_level->tags = tags;
-}
-
-/* Given NAME, an IDENTIFIER_NODE,
- return the structure (or union or enum) definition for that name.
- Searches binding levels from BINDING_LEVEL up to the global level.
- If THISLEVEL_ONLY is nonzero, searches only the specified context
- (but skips any tag-transparent contexts to find one that is
- meaningful for tags).
- CODE says which kind of type the caller wants;
- it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
- If the wrong kind of type is found, an error is reported. */
-
-static tree
-lookup_tag (code, name, binding_level, thislevel_only)
- enum tree_code code;
- struct binding_level *binding_level;
- tree name;
- int thislevel_only;
-{
- register struct binding_level *level;
-
- for (level = binding_level; level; level = level->level_chain)
- {
- register tree tail;
- for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
- {
- if (TREE_PURPOSE (tail) == name)
- {
- if (TREE_CODE (TREE_VALUE (tail)) != code)
- {
- /* Definition isn't the kind we were looking for. */
- pending_invalid_xref = name;
- pending_invalid_xref_file = input_filename;
- pending_invalid_xref_line = lineno;
- }
- return TREE_VALUE (tail);
- }
- }
- if (thislevel_only && ! level->tag_transparent)
- return NULL_TREE;
- }
- return NULL_TREE;
-}
-
-/* Print an error message now
- for a recent invalid struct, union or enum cross reference.
- We don't print them immediately because they are not invalid
- when used in the `struct foo;' construct for shadowing. */
-
-void
-pending_xref_error ()
-{
- if (pending_invalid_xref != 0)
- error_with_file_and_line (pending_invalid_xref_file,
- pending_invalid_xref_line,
- "`%s' defined as wrong kind of tag",
- IDENTIFIER_POINTER (pending_invalid_xref));
- pending_invalid_xref = 0;
-}
-
-/* Given a type, find the tag that was defined for it and return the tag name.
- Otherwise return 0. */
-
-static tree
-lookup_tag_reverse (type)
- tree type;
-{
- register struct binding_level *level;
-
- for (level = current_binding_level; level; level = level->level_chain)
- {
- register tree tail;
- for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
- {
- if (TREE_VALUE (tail) == type)
- return TREE_PURPOSE (tail);
- }
- }
- return NULL_TREE;
-}
-
-/* Look up NAME in the current binding level and its superiors
- in the namespace of variables, functions and typedefs.
- Return a ..._DECL node of some kind representing its definition,
- or return 0 if it is undefined. */
-
-tree
-lookup_name (name)
- tree name;
-{
- register tree val;
- if (current_binding_level != global_binding_level
- && IDENTIFIER_LOCAL_VALUE (name))
- val = IDENTIFIER_LOCAL_VALUE (name);
- else
- val = IDENTIFIER_GLOBAL_VALUE (name);
- return val;
-}
-
-/* Similar to `lookup_name' but look only at current binding level. */
-
-tree
-lookup_name_current_level (name)
- tree name;
-{
- register tree t;
-
- if (current_binding_level == global_binding_level)
- return IDENTIFIER_GLOBAL_VALUE (name);
-
- if (IDENTIFIER_LOCAL_VALUE (name) == 0)
- return 0;
-
- for (t = current_binding_level->names; t; t = TREE_CHAIN (t))
- if (DECL_NAME (t) == name)
- break;
-
- return t;
-}
-
-/* Create the predefined scalar types of C,
- and some nodes representing standard constants (0, 1, (void *)0).
- Initialize the global binding level.
- Make definitions for built-in primitive functions. */
-
-void
-init_decl_processing ()
-{
- register tree endlink;
- /* Either char* or void*. */
- tree traditional_ptr_type_node;
- /* Data types of memcpy and strlen. */
- tree memcpy_ftype, strlen_ftype;
- tree void_ftype_any;
- int wchar_type_size;
- tree temp;
- tree array_domain_type;
-
- current_function_decl = NULL;
- named_labels = NULL;
- current_binding_level = NULL_BINDING_LEVEL;
- free_binding_level = NULL_BINDING_LEVEL;
- pushlevel (0); /* make the binding_level structure for global names */
- global_binding_level = current_binding_level;
-
- /* Define `int' and `char' first so that dbx will output them first. */
-
- integer_type_node = make_signed_type (INT_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, ridpointers[(int) RID_INT],
- integer_type_node));
-
- /* Define `char', which is like either `signed char' or `unsigned char'
- but not the same as either. */
-
- char_type_node
- = (flag_signed_char
- ? make_signed_type (CHAR_TYPE_SIZE)
- : make_unsigned_type (CHAR_TYPE_SIZE));
- pushdecl (build_decl (TYPE_DECL, get_identifier ("char"),
- char_type_node));
-
- long_integer_type_node = make_signed_type (LONG_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("long int"),
- long_integer_type_node));
-
- unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned int"),
- unsigned_type_node));
-
- long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("long unsigned int"),
- long_unsigned_type_node));
-
- /* `unsigned long' is the standard type for sizeof.
- Traditionally, use a signed type.
- Note that stddef.h uses `unsigned long',
- and this must agree, even of long and int are the same size. */
- if (flag_traditional)
- sizetype = long_integer_type_node;
- else
- sizetype
- = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE)));
-
- ptrdiff_type_node
- = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE)));
-
- TREE_TYPE (TYPE_SIZE (integer_type_node)) = sizetype;
- TREE_TYPE (TYPE_SIZE (char_type_node)) = sizetype;
- TREE_TYPE (TYPE_SIZE (unsigned_type_node)) = sizetype;
- TREE_TYPE (TYPE_SIZE (long_unsigned_type_node)) = sizetype;
- TREE_TYPE (TYPE_SIZE (long_integer_type_node)) = sizetype;
-
- error_mark_node = make_node (ERROR_MARK);
- TREE_TYPE (error_mark_node) = error_mark_node;
-
- short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("short int"),
- short_integer_type_node));
-
- long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("long long int"),
- long_long_integer_type_node));
-
- short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("short unsigned int"),
- short_unsigned_type_node));
-
- long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("long long unsigned int"),
- long_long_unsigned_type_node));
-
- /* Define both `signed char' and `unsigned char'. */
- signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("signed char"),
- signed_char_type_node));
-
- unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned char"),
- unsigned_char_type_node));
-
- intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node));
-
- intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node));
-
- intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node));
-
- intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node));
-
- unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node));
-
- unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node));
-
- unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node));
-
- unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode));
- pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node));
-
- float_type_node = make_node (REAL_TYPE);
- TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
- pushdecl (build_decl (TYPE_DECL, ridpointers[(int) RID_FLOAT],
- float_type_node));
- layout_type (float_type_node);
-
- double_type_node = make_node (REAL_TYPE);
- if (flag_short_double)
- TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE;
- else
- TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE;
- pushdecl (build_decl (TYPE_DECL, ridpointers[(int) RID_DOUBLE],
- double_type_node));
- layout_type (double_type_node);
-
- long_double_type_node = make_node (REAL_TYPE);
- TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE;
- pushdecl (build_decl (TYPE_DECL, get_identifier ("long double"),
- long_double_type_node));
- layout_type (long_double_type_node);
-
- complex_integer_type_node = make_node (COMPLEX_TYPE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("complex int"),
- complex_integer_type_node));
- TREE_TYPE (complex_integer_type_node) = integer_type_node;
- layout_type (complex_integer_type_node);
-
- complex_float_type_node = make_node (COMPLEX_TYPE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("complex float"),
- complex_float_type_node));
- TREE_TYPE (complex_float_type_node) = float_type_node;
- layout_type (complex_float_type_node);
-
- complex_double_type_node = make_node (COMPLEX_TYPE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("complex double"),
- complex_double_type_node));
- TREE_TYPE (complex_double_type_node) = double_type_node;
- layout_type (complex_double_type_node);
-
- complex_long_double_type_node = make_node (COMPLEX_TYPE);
- pushdecl (build_decl (TYPE_DECL, get_identifier ("complex long double"),
- complex_long_double_type_node));
- TREE_TYPE (complex_long_double_type_node) = long_double_type_node;
- layout_type (complex_long_double_type_node);
-
- wchar_type_node
- = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE)));
- wchar_type_size = TYPE_PRECISION (wchar_type_node);
- signed_wchar_type_node = type_for_size (wchar_type_size, 0);
- unsigned_wchar_type_node = type_for_size (wchar_type_size, 1);
-
- integer_zero_node = build_int_2 (0, 0);
- TREE_TYPE (integer_zero_node) = integer_type_node;
- integer_one_node = build_int_2 (1, 0);
- TREE_TYPE (integer_one_node) = integer_type_node;
-
- size_zero_node = build_int_2 (0, 0);
- TREE_TYPE (size_zero_node) = sizetype;
- size_one_node = build_int_2 (1, 0);
- TREE_TYPE (size_one_node) = sizetype;
-
- void_type_node = make_node (VOID_TYPE);
- pushdecl (build_decl (TYPE_DECL,
- ridpointers[(int) RID_VOID], void_type_node));
- layout_type (void_type_node); /* Uses integer_zero_node */
- /* We are not going to have real types in C with less than byte alignment,
- so we might as well not have any types that claim to have it. */
- TYPE_ALIGN (void_type_node) = BITS_PER_UNIT;
-
- null_pointer_node = build_int_2 (0, 0);
- TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node);
- layout_type (TREE_TYPE (null_pointer_node));
-
- string_type_node = build_pointer_type (char_type_node);
- const_string_type_node
- = build_pointer_type (build_type_variant (char_type_node, 1, 0));
-
- /* Make a type to be the domain of a few array types
- whose domains don't really matter.
- 200 is small enough that it always fits in size_t
- and large enough that it can hold most function names for the
- initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
- array_domain_type = build_index_type (build_int_2 (200, 0));
-
- /* make a type for arrays of characters.
- With luck nothing will ever really depend on the length of this
- array type. */
- char_array_type_node
- = build_array_type (char_type_node, array_domain_type);
- /* Likewise for arrays of ints. */
- int_array_type_node
- = build_array_type (integer_type_node, array_domain_type);
- /* This is for wide string constants. */
- wchar_array_type_node
- = build_array_type (wchar_type_node, array_domain_type);
-
- default_function_type
- = build_function_type (integer_type_node, NULL_TREE);
-
- ptr_type_node = build_pointer_type (void_type_node);
- const_ptr_type_node
- = build_pointer_type (build_type_variant (void_type_node, 1, 0));
-
- endlink = tree_cons (NULL_TREE, void_type_node, NULL_TREE);
-
- void_ftype_any
- = build_function_type (void_type_node, NULL_TREE);
-
- double_ftype_double
- = build_function_type (double_type_node,
- tree_cons (NULL_TREE, double_type_node, endlink));
-
- double_ftype_double_double
- = build_function_type (double_type_node,
- tree_cons (NULL_TREE, double_type_node,
- tree_cons (NULL_TREE,
- double_type_node, endlink)));
-
- int_ftype_int
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, integer_type_node, endlink));
-
- long_ftype_long
- = build_function_type (long_integer_type_node,
- tree_cons (NULL_TREE,
- long_integer_type_node, endlink));
-
- void_ftype_ptr_ptr_int
- = build_function_type (void_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- tree_cons (NULL_TREE,
- integer_type_node,
- endlink))));
-
- int_ftype_cptr_cptr_sizet
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, const_ptr_type_node,
- tree_cons (NULL_TREE, const_ptr_type_node,
- tree_cons (NULL_TREE,
- sizetype,
- endlink))));
-
- void_ftype_ptr_int_int
- = build_function_type (void_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- tree_cons (NULL_TREE, integer_type_node,
- tree_cons (NULL_TREE,
- integer_type_node,
- endlink))));
-
- string_ftype_ptr_ptr /* strcpy prototype */
- = build_function_type (string_type_node,
- tree_cons (NULL_TREE, string_type_node,
- tree_cons (NULL_TREE,
- const_string_type_node,
- endlink)));
-
- int_ftype_string_string /* strcmp prototype */
- = build_function_type (integer_type_node,
- tree_cons (NULL_TREE, const_string_type_node,
- tree_cons (NULL_TREE,
- const_string_type_node,
- endlink)));
-
- strlen_ftype /* strlen prototype */
- = build_function_type (flag_traditional ? integer_type_node : sizetype,
- tree_cons (NULL_TREE, const_string_type_node,
- endlink));
-
- traditional_ptr_type_node
- = (flag_traditional ? string_type_node : ptr_type_node);
-
- memcpy_ftype /* memcpy prototype */
- = build_function_type (traditional_ptr_type_node,
- tree_cons (NULL_TREE, ptr_type_node,
- tree_cons (NULL_TREE, const_ptr_type_node,
- tree_cons (NULL_TREE,
- sizetype,
- endlink))));
-
- builtin_function ("__builtin_constant_p", int_ftype_int,
- BUILT_IN_CONSTANT_P, NULL_PTR);
-
- builtin_function ("__builtin_return_address",
- build_function_type (ptr_type_node,
- tree_cons (NULL_TREE,
- unsigned_type_node,
- endlink)),
- BUILT_IN_RETURN_ADDRESS, NULL_PTR);
-
- builtin_function ("__builtin_frame_address",
- build_function_type (ptr_type_node,
- tree_cons (NULL_TREE,
- unsigned_type_node,
- endlink)),
- BUILT_IN_FRAME_ADDRESS, NULL_PTR);
-
- builtin_function ("__builtin_alloca",
- build_function_type (ptr_type_node,
- tree_cons (NULL_TREE,
- sizetype,
- endlink)),
- BUILT_IN_ALLOCA, "alloca");
- builtin_function ("__builtin_ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
- /* Define alloca, ffs as builtins.
- Declare _exit just to mark it as volatile. */
- if (! flag_no_builtin && !flag_no_nonansi_builtin)
- {
- temp = builtin_function ("alloca",
- build_function_type (ptr_type_node,
- tree_cons (NULL_TREE,
- sizetype,
- endlink)),
- BUILT_IN_ALLOCA, NULL_PTR);
- /* Suppress error if redefined as a non-function. */
- DECL_BUILT_IN_NONANSI (temp) = 1;
- temp = builtin_function ("ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
- /* Suppress error if redefined as a non-function. */
- DECL_BUILT_IN_NONANSI (temp) = 1;
- temp = builtin_function ("_exit", void_ftype_any, NOT_BUILT_IN,
- NULL_PTR);
- TREE_THIS_VOLATILE (temp) = 1;
- TREE_SIDE_EFFECTS (temp) = 1;
- /* Suppress error if redefined as a non-function. */
- DECL_BUILT_IN_NONANSI (temp) = 1;
- }
-
- builtin_function ("__builtin_abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
- builtin_function ("__builtin_fabs", double_ftype_double, BUILT_IN_FABS,
- NULL_PTR);
- builtin_function ("__builtin_labs", long_ftype_long, BUILT_IN_LABS,
- NULL_PTR);
- builtin_function ("__builtin_saveregs",
- build_function_type (ptr_type_node, NULL_TREE),
- BUILT_IN_SAVEREGS, NULL_PTR);
-/* EXPAND_BUILTIN_VARARGS is obsolete. */
-#if 0
- builtin_function ("__builtin_varargs",
- build_function_type (ptr_type_node,
- tree_cons (NULL_TREE,
- integer_type_node,
- endlink)),
- BUILT_IN_VARARGS, NULL_PTR);
-#endif
- builtin_function ("__builtin_classify_type", default_function_type,
- BUILT_IN_CLASSIFY_TYPE, NULL_PTR);
- builtin_function ("__builtin_next_arg",
- build_function_type (ptr_type_node, endlink),
- BUILT_IN_NEXT_ARG, NULL_PTR);
- builtin_function ("__builtin_args_info",
- build_function_type (integer_type_node,
- tree_cons (NULL_TREE,
- integer_type_node,
- endlink)),
- BUILT_IN_ARGS_INFO, NULL_PTR);
-
- /* Untyped call and return. */
- builtin_function ("__builtin_apply_args",
- build_function_type (ptr_type_node, NULL_TREE),
- BUILT_IN_APPLY_ARGS, NULL_PTR);
-
- temp = tree_cons (NULL_TREE,
- build_pointer_type (build_function_type (void_type_node,
- NULL_TREE)),
- tree_cons (NULL_TREE,
- ptr_type_node,
- tree_cons (NULL_TREE,
- sizetype,
- endlink)));
- builtin_function ("__builtin_apply",
- build_function_type (ptr_type_node, temp),
- BUILT_IN_APPLY, NULL_PTR);
- builtin_function ("__builtin_return",
- build_function_type (void_type_node,
- tree_cons (NULL_TREE,
- ptr_type_node,
- endlink)),
- BUILT_IN_RETURN, NULL_PTR);
-
- /* Currently under experimentation. */
- builtin_function ("__builtin_memcpy", memcpy_ftype,
- BUILT_IN_MEMCPY, "memcpy");
- builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet,
- BUILT_IN_MEMCMP, "memcmp");
- builtin_function ("__builtin_strcmp", int_ftype_string_string,
- BUILT_IN_STRCMP, "strcmp");
- builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr,
- BUILT_IN_STRCPY, "strcpy");
- builtin_function ("__builtin_strlen", strlen_ftype,
- BUILT_IN_STRLEN, "strlen");
- builtin_function ("__builtin_fsqrt", double_ftype_double,
- BUILT_IN_FSQRT, "sqrt");
- builtin_function ("__builtin_sin", double_ftype_double,
- BUILT_IN_SIN, "sin");
- builtin_function ("__builtin_cos", double_ftype_double,
- BUILT_IN_COS, "cos");
-
- /* In an ANSI C program, it is okay to supply built-in meanings
- for these functions, since applications cannot validly use them
- with any other meaning.
- However, honor the -fno-builtin option. */
- if (!flag_no_builtin)
- {
- builtin_function ("abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
- builtin_function ("fabs", double_ftype_double, BUILT_IN_FABS, NULL_PTR);
- builtin_function ("labs", long_ftype_long, BUILT_IN_LABS, NULL_PTR);
- builtin_function ("memcpy", memcpy_ftype, BUILT_IN_MEMCPY, NULL_PTR);
- builtin_function ("memcmp", int_ftype_cptr_cptr_sizet, BUILT_IN_MEMCMP,
- NULL_PTR);
- builtin_function ("strcmp", int_ftype_string_string, BUILT_IN_STRCMP,
- NULL_PTR);
- builtin_function ("strcpy", string_ftype_ptr_ptr, BUILT_IN_STRCPY,
- NULL_PTR);
- builtin_function ("strlen", strlen_ftype, BUILT_IN_STRLEN, NULL_PTR);
- builtin_function ("sqrt", double_ftype_double, BUILT_IN_FSQRT, NULL_PTR);
- builtin_function ("sin", double_ftype_double, BUILT_IN_SIN, NULL_PTR);
- builtin_function ("cos", double_ftype_double, BUILT_IN_COS, NULL_PTR);
-
- /* Declare these functions volatile
- to avoid spurious "control drops through" warnings. */
- /* Don't specify the argument types, to avoid errors
- from certain code which isn't valid in ANSI but which exists. */
- temp = builtin_function ("abort", void_ftype_any, NOT_BUILT_IN,
- NULL_PTR);
- TREE_THIS_VOLATILE (temp) = 1;
- TREE_SIDE_EFFECTS (temp) = 1;
- temp = builtin_function ("exit", void_ftype_any, NOT_BUILT_IN, NULL_PTR);
- TREE_THIS_VOLATILE (temp) = 1;
- TREE_SIDE_EFFECTS (temp) = 1;
- }
-
-#if 0
- /* Support for these has not been written in either expand_builtin
- or build_function_call. */
- builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV, NULL_PTR);
- builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV, NULL_PTR);
- builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR,
- NULL_PTR);
- builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL,
- NULL_PTR);
- builtin_function ("__builtin_fmod", double_ftype_double_double,
- BUILT_IN_FMOD, NULL_PTR);
- builtin_function ("__builtin_frem", double_ftype_double_double,
- BUILT_IN_FREM, NULL_PTR);
- builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int,
- BUILT_IN_MEMSET, NULL_PTR);
- builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP,
- NULL_PTR);
- builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN,
- NULL_PTR);
-#endif
-
- /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
- declare_function_name ();
-
- start_identifier_warnings ();
-
- init_format_info_table ();
-
- init_iterators ();
-
- incomplete_decl_finalize_hook = finish_incomplete_decl;
-}
-
-/* Return a definition for a builtin function named NAME and whose data type
- is TYPE. TYPE should be a function type with argument types.
- FUNCTION_CODE tells later passes how to compile calls to this function.
- See tree.h for its possible values.
-
- If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
- the name to be called if we can't opencode the function. */
-
-tree
-builtin_function (name, type, function_code, library_name)
- char *name;
- tree type;
- enum built_in_function function_code;
- char *library_name;
-{
- tree decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
- DECL_EXTERNAL (decl) = 1;
- TREE_PUBLIC (decl) = 1;
- /* If -traditional, permit redefining a builtin function any way you like.
- (Though really, if the program redefines these functions,
- it probably won't work right unless compiled with -fno-builtin.) */
- if (flag_traditional && name[0] != '_')
- DECL_BUILT_IN_NONANSI (decl) = 1;
- if (library_name)
- DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name);
- make_decl_rtl (decl, NULL_PTR, 1);
- pushdecl (decl);
- if (function_code != NOT_BUILT_IN)
- {
- DECL_BUILT_IN (decl) = 1;
- DECL_SET_FUNCTION_CODE (decl, function_code);
- }
- /* Warn if a function in the namespace for users
- is used without an occasion to consider it declared. */
- if (name[0] != '_' || name[1] != '_')
- C_DECL_ANTICIPATED (decl) = 1;
-
- return decl;
-}
-
-/* Called when a declaration is seen that contains no names to declare.
- If its type is a reference to a structure, union or enum inherited
- from a containing scope, shadow that tag name for the current scope
- with a forward reference.
- If its type defines a new named structure or union
- or defines an enum, it is valid but we need not do anything here.
- Otherwise, it is an error. */
-
-void
-shadow_tag (declspecs)
- tree declspecs;
-{
- shadow_tag_warned (declspecs, 0);
-}
-
-void
-shadow_tag_warned (declspecs, warned)
- tree declspecs;
- int warned;
- /* 1 => we have done a pedwarn. 2 => we have done a warning, but
- no pedwarn. */
-{
- int found_tag = 0;
- register tree link;
-
- pending_invalid_xref = 0;
-
- for (link = declspecs; link; link = TREE_CHAIN (link))
- {
- register tree value = TREE_VALUE (link);
- register enum tree_code code = TREE_CODE (value);
-
- if (code == RECORD_TYPE || code == UNION_TYPE || code == ENUMERAL_TYPE)
- /* Used to test also that TYPE_SIZE (value) != 0.
- That caused warning for `struct foo;' at top level in the file. */
- {
- register tree name = lookup_tag_reverse (value);
- register tree t;
-
- found_tag++;
-
- if (name == 0)
- {
- if (warned != 1 && code != ENUMERAL_TYPE)
- /* Empty unnamed enum OK */
- {
- pedwarn ("unnamed struct/union that defines no instances");
- warned = 1;
- }
- }
- else
- {
- t = lookup_tag (code, name, current_binding_level, 1);
-
- if (t == 0)
- {
- t = make_node (code);
- pushtag (name, t);
- }
- }
- }
- else
- {
- if (!warned)
- {
- warning ("useless keyword or type name in empty declaration");
- warned = 2;
- }
- }
- }
-
- if (found_tag > 1)
- error ("two types specified in one empty declaration");
-
- if (warned != 1)
- {
- if (found_tag == 0)
- pedwarn ("empty declaration");
- }
-}
-
-/* Decode a "typename", such as "int **", returning a ..._TYPE node. */
-
-tree
-groktypename (typename)
- tree typename;
-{
- if (TREE_CODE (typename) != TREE_LIST)
- return typename;
- return grokdeclarator (TREE_VALUE (typename),
- TREE_PURPOSE (typename),
- TYPENAME, 0);
-}
-
-/* Return a PARM_DECL node for a given pair of specs and declarator. */
-
-tree
-groktypename_in_parm_context (typename)
- tree typename;
-{
- if (TREE_CODE (typename) != TREE_LIST)
- return typename;
- return grokdeclarator (TREE_VALUE (typename),
- TREE_PURPOSE (typename),
- PARM, 0);
-}
-
-/* Decode a declarator in an ordinary declaration or data definition.
- This is called as soon as the type information and variable name
- have been parsed, before parsing the initializer if any.
- Here we create the ..._DECL node, fill in its type,
- and put it on the list of decls for the current context.
- The ..._DECL node is returned as the value.
-
- Exception: for arrays where the length is not specified,
- the type is left null, to be filled in by `finish_decl'.
-
- Function definitions do not come here; they go to start_function
- instead. However, external and forward declarations of functions
- do go through here. Structure field declarations are done by
- grokfield and not through here. */
-
-/* Set this to zero to debug not using the temporary obstack
- to parse initializers. */
-int debug_temp_inits = 1;
-
-tree
-start_decl (declarator, declspecs, initialized)
- tree declarator, declspecs;
- int initialized;
-{
- register tree decl = grokdeclarator (declarator, declspecs,
- NORMAL, initialized);
- register tree tem;
- int init_written = initialized;
-
- /* The corresponding pop_obstacks is in finish_decl. */
- push_obstacks_nochange ();
-
- if (initialized)
- /* Is it valid for this decl to have an initializer at all?
- If not, set INITIALIZED to zero, which will indirectly
- tell `finish_decl' to ignore the initializer once it is parsed. */
- switch (TREE_CODE (decl))
- {
- case TYPE_DECL:
- /* typedef foo = bar means give foo the same type as bar.
- We haven't parsed bar yet, so `finish_decl' will fix that up.
- Any other case of an initialization in a TYPE_DECL is an error. */
- if (pedantic || list_length (declspecs) > 1)
- {
- error ("typedef `%s' is initialized",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- initialized = 0;
- }
- break;
-
- case FUNCTION_DECL:
- error ("function `%s' is initialized like a variable",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- initialized = 0;
- break;
-
- case PARM_DECL:
- /* DECL_INITIAL in a PARM_DECL is really DECL_ARG_TYPE. */
- error ("parameter `%s' is initialized",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- initialized = 0;
- break;
-
- default:
- /* Don't allow initializations for incomplete types
- except for arrays which might be completed by the initialization. */
- if (TYPE_SIZE (TREE_TYPE (decl)) != 0)
- {
- /* A complete type is ok if size is fixed. */
-
- if (TREE_CODE (TYPE_SIZE (TREE_TYPE (decl))) != INTEGER_CST
- || C_DECL_VARIABLE_SIZE (decl))
- {
- error ("variable-sized object may not be initialized");
- initialized = 0;
- }
- }
- else if (TREE_CODE (TREE_TYPE (decl)) != ARRAY_TYPE)
- {
- error ("variable `%s' has initializer but incomplete type",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- initialized = 0;
- }
- else if (TYPE_SIZE (TREE_TYPE (TREE_TYPE (decl))) == 0)
- {
- error ("elements of array `%s' have incomplete type",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- initialized = 0;
- }
- }
-
- if (initialized)
- {
-#if 0 /* Seems redundant with grokdeclarator. */
- if (current_binding_level != global_binding_level
- && DECL_EXTERNAL (decl)
- && TREE_CODE (decl) != FUNCTION_DECL)
- warning ("declaration of `%s' has `extern' and is initialized",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
-#endif
- DECL_EXTERNAL (decl) = 0;
- if (current_binding_level == global_binding_level)
- TREE_STATIC (decl) = 1;
-
- /* Tell `pushdecl' this is an initialized decl
- even though we don't yet have the initializer expression.
- Also tell `finish_decl' it may store the real initializer. */
- DECL_INITIAL (decl) = error_mark_node;
- }
-
- /* If this is a function declaration, write a record describing it to the
- prototypes file (if requested). */
-
- if (TREE_CODE (decl) == FUNCTION_DECL)
- gen_aux_info_record (decl, 0, 0, TYPE_ARG_TYPES (TREE_TYPE (decl)) != 0);
-
- /* Add this decl to the current binding level.
- TEM may equal DECL or it may be a previous decl of the same name. */
- tem = pushdecl (decl);
-
- /* For a local variable, define the RTL now. */
- if (current_binding_level != global_binding_level
- /* But not if this is a duplicate decl
- and we preserved the rtl from the previous one
- (which may or may not happen). */
- && DECL_RTL (tem) == 0)
- {
- if (TYPE_SIZE (TREE_TYPE (tem)) != 0)
- expand_decl (tem);
- else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
- && DECL_INITIAL (tem) != 0)
- expand_decl (tem);
- }
-
- if (init_written)
- {
- /* When parsing and digesting the initializer,
- use temporary storage. Do this even if we will ignore the value. */
- if (current_binding_level == global_binding_level && debug_temp_inits)
- temporary_allocation ();
- }
-
- return tem;
-}
-
-/* Finish processing of a declaration;
- install its initial value.
- If the length of an array type is not known before,
- it must be determined now, from the initial value, or it is an error. */
-
-void
-finish_decl (decl, init, asmspec_tree)
- tree decl, init;
- tree asmspec_tree;
-{
- register tree type = TREE_TYPE (decl);
- int was_incomplete = (DECL_SIZE (decl) == 0);
- int temporary = allocation_temporary_p ();
- char *asmspec = 0;
-
- if (asmspec_tree)
- asmspec = TREE_STRING_POINTER (asmspec_tree);
-
- /* If `start_decl' didn't like having an initialization, ignore it now. */
-
- if (init != 0 && DECL_INITIAL (decl) == 0)
- init = 0;
- /* Don't crash if parm is initialized. */
- if (TREE_CODE (decl) == PARM_DECL)
- init = 0;
-
- if (ITERATOR_P (decl))
- {
- if (init == 0)
- error_with_decl (decl, "iterator has no initial value");
- else
- init = save_expr (init);
- }
-
- if (init)
- {
- if (TREE_CODE (decl) != TYPE_DECL)
- store_init_value (decl, init);
- else
- {
- /* typedef foo = bar; store the type of bar as the type of foo. */
- TREE_TYPE (decl) = TREE_TYPE (init);
- DECL_INITIAL (decl) = init = 0;
- }
- }
-
- /* Pop back to the obstack that is current for this binding level.
- This is because MAXINDEX, rtl, etc. to be made below
- must go in the permanent obstack. But don't discard the
- temporary data yet. */
- pop_obstacks ();
-#if 0 /* pop_obstacks was near the end; this is what was here. */
- if (current_binding_level == global_binding_level && temporary)
- end_temporary_allocation ();
-#endif
-
- /* Deduce size of array from initialization, if not already known */
-
- if (TREE_CODE (type) == ARRAY_TYPE
- && TYPE_DOMAIN (type) == 0
- && TREE_CODE (decl) != TYPE_DECL)
- {
- int do_default
- = (TREE_STATIC (decl)
- /* Even if pedantic, an external linkage array
- may have incomplete type at first. */
- ? pedantic && !TREE_PUBLIC (decl)
- : !DECL_EXTERNAL (decl));
- int failure
- = complete_array_type (type, DECL_INITIAL (decl), do_default);
-
- /* Get the completed type made by complete_array_type. */
- type = TREE_TYPE (decl);
-
- if (failure == 1)
- error_with_decl (decl, "initializer fails to determine size of `%s'");
-
- if (failure == 2)
- {
- if (do_default)
- error_with_decl (decl, "array size missing in `%s'");
- /* If a `static' var's size isn't known,
- make it extern as well as static, so it does not get
- allocated.
- If it is not `static', then do not mark extern;
- finish_incomplete_decl will give it a default size
- and it will get allocated. */
- else if (!pedantic && TREE_STATIC (decl) && ! TREE_PUBLIC (decl))
- DECL_EXTERNAL (decl) = 1;
- }
-
- if (pedantic && TYPE_DOMAIN (type) != 0
- && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
- integer_zero_node))
- error_with_decl (decl, "zero-size array `%s'");
-
- layout_decl (decl, 0);
- }
-
- if (TREE_CODE (decl) == VAR_DECL)
- {
- if (DECL_SIZE (decl) == 0
- && TYPE_SIZE (TREE_TYPE (decl)) != 0)
- layout_decl (decl, 0);
-
- if (DECL_SIZE (decl) == 0
- && (TREE_STATIC (decl)
- ?
- /* A static variable with an incomplete type
- is an error if it is initialized or `static'.
- Otherwise, let it through, but if it is not `extern'
- then it may cause an error message later. */
- !TREE_PUBLIC (decl) || DECL_INITIAL (decl)
- :
- /* An automatic variable with an incomplete type
- is an error. */
- !DECL_EXTERNAL (decl)))
- {
- error_with_decl (decl, "storage size of `%s' isn't known");
- TREE_TYPE (decl) = error_mark_node;
- }
-
- if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
- && DECL_SIZE (decl) != 0)
- {
- if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
- constant_expression_warning (DECL_SIZE (decl));
- else
- error_with_decl (decl, "storage size of `%s' isn't constant");
- }
- }
-
- /* Output the assembler code and/or RTL code for variables and functions,
- unless the type is an undefined structure or union.
- If not, it will get done when the type is completed. */
-
- if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL)
- {
- if (flag_traditional && allocation_temporary_p ())
- {
- push_obstacks_nochange ();
- end_temporary_allocation ();
- /* This is a no-op in c-lang.c or something real in objc-actions.c. */
- maybe_objc_check_decl (decl);
- rest_of_decl_compilation (decl, asmspec,
- current_binding_level == global_binding_level,
- 0);
- pop_obstacks ();
- }
- else
- {
- /* This is a no-op in c-lang.c or something real in objc-actions.c. */
- maybe_objc_check_decl (decl);
- rest_of_decl_compilation (decl, asmspec,
- current_binding_level == global_binding_level,
- 0);
- }
- if (current_binding_level != global_binding_level)
- {
- /* Recompute the RTL of a local array now
- if it used to be an incomplete type. */
- if (was_incomplete
- && ! TREE_STATIC (decl) && ! DECL_EXTERNAL (decl))
- {
- /* If we used it already as memory, it must stay in memory. */
- TREE_ADDRESSABLE (decl) = TREE_USED (decl);
- /* If it's still incomplete now, no init will save it. */
- if (DECL_SIZE (decl) == 0)
- DECL_INITIAL (decl) = 0;
- expand_decl (decl);
- }
- /* Compute and store the initial value. */
- if (TREE_CODE (decl) != FUNCTION_DECL)
- expand_decl_init (decl);
- }
- }
-
- if (TREE_CODE (decl) == TYPE_DECL)
- {
- /* This is a no-op in c-lang.c or something real in objc-actions.c. */
- maybe_objc_check_decl (decl);
- rest_of_decl_compilation (decl, NULL_PTR,
- current_binding_level == global_binding_level,
- 0);
- }
-
- /* ??? After 2.3, test (init != 0) instead of TREE_CODE. */
- if (!(TREE_CODE (decl) == FUNCTION_DECL && DECL_INLINE (decl))
- && temporary && TREE_PERMANENT (decl)
- /* DECL_INITIAL is not defined in PARM_DECLs, since it shares
- space with DECL_ARG_TYPE. */
- && TREE_CODE (decl) != PARM_DECL)
- {
- /* We need to remember that this array HAD an initialization,
- but discard the actual temporary nodes,
- since we can't have a permanent node keep pointing to them. */
- /* We make an exception for inline functions, since it's
- normal for a local extern redeclaration of an inline function
- to have a copy of the top-level decl's DECL_INLINE. */
- if (DECL_INITIAL (decl) != 0)
- DECL_INITIAL (decl) = error_mark_node;
- }
-
-#if 0
- /* Resume permanent allocation, if not within a function. */
- /* The corresponding push_obstacks_nochange is in start_decl,
- and in push_parm_decl and in grokfield. */
- pop_obstacks ();
-#endif
-
- /* If we have gone back from temporary to permanent allocation,
- actually free the temporary space that we no longer need. */
- if (temporary && !allocation_temporary_p ())
- permanent_allocation ();
-
- /* At the end of a declaration, throw away any variable type sizes
- of types defined inside that declaration. There is no use
- computing them in the following function definition. */
- if (current_binding_level == global_binding_level)
- get_pending_sizes ();
-}
-
-/* If DECL has a cleanup, build and return that cleanup here.
- This is a callback called by expand_expr. */
-
-tree
-maybe_build_cleanup (decl)
- tree decl;
-{
- /* There are no cleanups in C. */
- return NULL_TREE;
-}
-
-/* Given a parsed parameter declaration,
- decode it into a PARM_DECL and push that on the current binding level.
- Also, for the sake of forward parm decls,
- record the given order of parms in `parm_order'. */
-
-void
-push_parm_decl (parm)
- tree parm;
-{
- tree decl, olddecl;
- int old_immediate_size_expand = immediate_size_expand;
- /* Don't try computing parm sizes now -- wait till fn is called. */
- immediate_size_expand = 0;
-
- /* The corresponding pop_obstacks is in finish_decl. */
- push_obstacks_nochange ();
-
- decl = grokdeclarator (TREE_VALUE (parm), TREE_PURPOSE (parm), PARM, 0);
-
-#if 0
- if (DECL_NAME (decl))
- {
- olddecl = lookup_name (DECL_NAME (decl));
- if (pedantic && olddecl != 0 && TREE_CODE (olddecl) == TYPE_DECL)
- pedwarn_with_decl (decl, "ANSI C forbids parameter `%s' shadowing typedef");
- }
-#endif
-
- decl = pushdecl (decl);
-
- immediate_size_expand = old_immediate_size_expand;
-
- current_binding_level->parm_order
- = tree_cons (NULL_TREE, decl, current_binding_level->parm_order);
-
- /* Add this decl to the current binding level. */
- finish_decl (decl, NULL_TREE, NULL_TREE);
-}
-
-/* Clear the given order of parms in `parm_order'.
- Used at start of parm list,
- and also at semicolon terminating forward decls. */
-
-void
-clear_parm_order ()
-{
- current_binding_level->parm_order = NULL_TREE;
-}
-
-/* Make TYPE a complete type based on INITIAL_VALUE.
- Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
- 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
-
-int
-complete_array_type (type, initial_value, do_default)
- tree type;
- tree initial_value;
- int do_default;
-{
- register tree maxindex = NULL_TREE;
- int value = 0;
-
- if (initial_value)
- {
- /* Note MAXINDEX is really the maximum index,
- one less than the size. */
- if (TREE_CODE (initial_value) == STRING_CST)
- {
- int eltsize
- = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
- maxindex = build_int_2 (TREE_STRING_LENGTH (initial_value) / eltsize - 1, 0);
- }
- else if (TREE_CODE (initial_value) == CONSTRUCTOR)
- {
- register int nelts
- = list_length (CONSTRUCTOR_ELTS (initial_value));
- maxindex = build_int_2 (nelts - 1, - (nelts == 0));
- }
- else
- {
- /* Make an error message unless that happened already. */
- if (initial_value != error_mark_node)
- value = 1;
-
- /* Prevent further error messages. */
- maxindex = build_int_2 (0, 0);
- }
- }
-
- if (!maxindex)
- {
- if (do_default)
- maxindex = build_int_2 (0, 0);
- value = 2;
- }
-
- if (maxindex)
- {
- TYPE_DOMAIN (type) = build_index_type (maxindex);
- if (!TREE_TYPE (maxindex))
- TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
-#if 0 /* I took out this change
- together with the change in build_array_type. --rms */
- change_main_variant (type,
- build_array_type (TREE_TYPE (type),
- TYPE_DOMAIN (type)));
-#endif
- }
-
- /* Lay out the type now that we can get the real answer. */
-
- layout_type (type);
-
- return value;
-}
-
-/* Given declspecs and a declarator,
- determine the name and type of the object declared
- and construct a ..._DECL node for it.
- (In one case we can return a ..._TYPE node instead.
- For invalid input we sometimes return 0.)
-
- DECLSPECS is a chain of tree_list nodes whose value fields
- are the storage classes and type specifiers.
-
- DECL_CONTEXT says which syntactic context this declaration is in:
- NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
- FUNCDEF for a function definition. Like NORMAL but a few different
- error messages in each case. Return value may be zero meaning
- this definition is too screwy to try to parse.
- PARM for a parameter declaration (either within a function prototype
- or before a function body). Make a PARM_DECL, or return void_type_node.
- TYPENAME if for a typename (in a cast or sizeof).
- Don't make a DECL node; just return the ..._TYPE node.
- FIELD for a struct or union field; make a FIELD_DECL.
- BITFIELD for a field with specified width.
- INITIALIZED is 1 if the decl has an initializer.
-
- In the TYPENAME case, DECLARATOR is really an absolute declarator.
- It may also be so in the PARM case, for a prototype where the
- argument type is specified but not the name.
-
- This function is where the complicated C meanings of `static'
- and `extern' are interpreted. */
-
-static tree
-grokdeclarator (declarator, declspecs, decl_context, initialized)
- tree declspecs;
- tree declarator;
- enum decl_context decl_context;
- int initialized;
-{
- int specbits = 0;
- tree spec;
- tree type = NULL_TREE;
- int longlong = 0;
- int constp;
- int volatilep;
- int inlinep;
- int explicit_int = 0;
- int explicit_char = 0;
- int defaulted_int = 0;
- tree typedef_decl = 0;
- char *name;
- tree typedef_type = 0;
- int funcdef_flag = 0;
- enum tree_code innermost_code = ERROR_MARK;
- int bitfield = 0;
- int size_varies = 0;
-
- if (decl_context == BITFIELD)
- bitfield = 1, decl_context = FIELD;
-
- if (decl_context == FUNCDEF)
- funcdef_flag = 1, decl_context = NORMAL;
-
- push_obstacks_nochange ();
-
- if (flag_traditional && allocation_temporary_p ())
- end_temporary_allocation ();
-
- /* Look inside a declarator for the name being declared
- and get it as a string, for an error message. */
- {
- register tree decl = declarator;
- name = 0;
-
- while (decl)
- switch (TREE_CODE (decl))
- {
- case ARRAY_REF:
- case INDIRECT_REF:
- case CALL_EXPR:
- innermost_code = TREE_CODE (decl);
- decl = TREE_OPERAND (decl, 0);
- break;
-
- case IDENTIFIER_NODE:
- name = IDENTIFIER_POINTER (decl);
- decl = 0;
- break;
-
- default:
- abort ();
- }
- if (name == 0)
- name = "type name";
- }
-
- /* A function definition's declarator must have the form of
- a function declarator. */
-
- if (funcdef_flag && innermost_code != CALL_EXPR)
- return 0;
-
- /* Anything declared one level down from the top level
- must be one of the parameters of a function
- (because the body is at least two levels down). */
-
- /* If this looks like a function definition, make it one,
- even if it occurs where parms are expected.
- Then store_parm_decls will reject it and not use it as a parm. */
- if (decl_context == NORMAL && !funcdef_flag
- && current_binding_level->level_chain == global_binding_level)
- decl_context = PARM;
-
- /* Look through the decl specs and record which ones appear.
- Some typespecs are defined as built-in typenames.
- Others, the ones that are modifiers of other types,
- are represented by bits in SPECBITS: set the bits for
- the modifiers that appear. Storage class keywords are also in SPECBITS.
-
- If there is a typedef name or a type, store the type in TYPE.
- This includes builtin typedefs such as `int'.
-
- Set EXPLICIT_INT or EXPLICIT_CHAR if the type is `int' or `char'
- and did not come from a user typedef.
-
- Set LONGLONG if `long' is mentioned twice. */
-
- for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
- {
- register int i;
- register tree id = TREE_VALUE (spec);
-
- if (id == ridpointers[(int) RID_INT])
- explicit_int = 1;
- if (id == ridpointers[(int) RID_CHAR])
- explicit_char = 1;
-
- if (TREE_CODE (id) == IDENTIFIER_NODE)
- for (i = (int) RID_FIRST_MODIFIER; i < (int) RID_MAX; i++)
- {
- if (ridpointers[i] == id)
- {
- if (i == (int) RID_LONG && specbits & (1<<i))
- {
- if (longlong)
- error ("`long long long' is too long for GCC");
- else
- {
- if (pedantic)
- pedwarn ("ANSI C does not support `long long'");
- longlong = 1;
- }
- }
- else if (specbits & (1 << i))
- pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id));
- specbits |= 1 << i;
- goto found;
- }
- }
- if (type)
- error ("two or more data types in declaration of `%s'", name);
- /* Actual typedefs come to us as TYPE_DECL nodes. */
- else if (TREE_CODE (id) == TYPE_DECL)
- {
- type = TREE_TYPE (id);
- typedef_decl = id;
- }
- /* Built-in types come as identifiers. */
- else if (TREE_CODE (id) == IDENTIFIER_NODE)
- {
- register tree t = lookup_name (id);
- if (TREE_TYPE (t) == error_mark_node)
- ;
- else if (!t || TREE_CODE (t) != TYPE_DECL)
- error ("`%s' fails to be a typedef or built in type",
- IDENTIFIER_POINTER (id));
- else
- {
- type = TREE_TYPE (t);
- typedef_decl = t;
- }
- }
- else if (TREE_CODE (id) != ERROR_MARK)
- type = id;
-
- found: {}
- }
-
- typedef_type = type;
- if (type)
- size_varies = C_TYPE_VARIABLE_SIZE (type);
-
- /* No type at all: default to `int', and set DEFAULTED_INT
- because it was not a user-defined typedef. */
-
- if (type == 0)
- {
- if (funcdef_flag && warn_return_type
- && ! (specbits & ((1 << (int) RID_LONG) | (1 << (int) RID_SHORT)
- | (1 << (int) RID_SIGNED) | (1 << (int) RID_UNSIGNED))))
- warn_about_return_type = 1;
- defaulted_int = 1;
- type = integer_type_node;
- }
-
- /* Now process the modifiers that were specified
- and check for invalid combinations. */
-
- /* Long double is a special combination. */
-
- if ((specbits & 1 << (int) RID_LONG)
- && TYPE_MAIN_VARIANT (type) == double_type_node)
- {
- specbits &= ~ (1 << (int) RID_LONG);
- type = long_double_type_node;
- }
-
- /* Check all other uses of type modifiers. */
-
- if (specbits & ((1 << (int) RID_LONG) | (1 << (int) RID_SHORT)
- | (1 << (int) RID_UNSIGNED) | (1 << (int) RID_SIGNED)))
- {
- int ok = 0;
-
- if (TREE_CODE (type) != INTEGER_TYPE)
- error ("long, short, signed or unsigned invalid for `%s'", name);
- else if ((specbits & 1 << (int) RID_LONG)
- && (specbits & 1 << (int) RID_SHORT))
- error ("long and short specified together for `%s'", name);
- else if (((specbits & 1 << (int) RID_LONG)
- || (specbits & 1 << (int) RID_SHORT))
- && explicit_char)
- error ("long or short specified with char for `%s'", name);
- else if (((specbits & 1 << (int) RID_LONG)
- || (specbits & 1 << (int) RID_SHORT))
- && TREE_CODE (type) == REAL_TYPE)
- error ("long or short specified with floating type for `%s'", name);
- else if ((specbits & 1 << (int) RID_SIGNED)
- && (specbits & 1 << (int) RID_UNSIGNED))
- error ("signed and unsigned given together for `%s'", name);
- else
- {
- ok = 1;
- if (!explicit_int && !defaulted_int && !explicit_char && pedantic)
- {
- pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
- name);
- if (flag_pedantic_errors)
- ok = 0;
- }
- }
-
- /* Discard the type modifiers if they are invalid. */
- if (! ok)
- {
- specbits &= ~((1 << (int) RID_LONG) | (1 << (int) RID_SHORT)
- | (1 << (int) RID_UNSIGNED) | (1 << (int) RID_SIGNED));
- longlong = 0;
- }
- }
-
- /* Decide whether an integer type is signed or not.
- Optionally treat bitfields as signed by default. */
- if (specbits & 1 << (int) RID_UNSIGNED
- /* Traditionally, all bitfields are unsigned. */
- || (bitfield && flag_traditional
- && (! explicit_flag_signed_bitfields || !flag_signed_bitfields))
- || (bitfield && ! flag_signed_bitfields
- && (explicit_int || defaulted_int || explicit_char
- /* A typedef for plain `int' without `signed'
- can be controlled just like plain `int'. */
- || ! (typedef_decl != 0
- && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
- && TREE_CODE (type) != ENUMERAL_TYPE
- && !(specbits & 1 << (int) RID_SIGNED)))
- {
- if (longlong)
- type = long_long_unsigned_type_node;
- else if (specbits & 1 << (int) RID_LONG)
- type = long_unsigned_type_node;
- else if (specbits & 1 << (int) RID_SHORT)
- type = short_unsigned_type_node;
- else if (type == char_type_node)
- type = unsigned_char_type_node;
- else if (typedef_decl)
- type = unsigned_type (type);
- else
- type = unsigned_type_node;
- }
- else if ((specbits & 1 << (int) RID_SIGNED)
- && type == char_type_node)
- type = signed_char_type_node;
- else if (longlong)
- type = long_long_integer_type_node;
- else if (specbits & 1 << (int) RID_LONG)
- type = long_integer_type_node;
- else if (specbits & 1 << (int) RID_SHORT)
- type = short_integer_type_node;
- else if (specbits & 1 << (int) RID_COMPLEX)
- {
- if (defaulted_int)
- type = complex_double_type_node;
- else if (type == integer_type_node)
- type = complex_integer_type_node;
- else if (type == float_type_node)
- type = complex_float_type_node;
- else if (type == double_type_node)
- type = complex_double_type_node;
- else if (type == long_double_type_node)
- type = complex_long_double_type_node;
- else
- error ("invalid complex type");
- }
-
- /* Set CONSTP if this declaration is `const', whether by
- explicit specification or via a typedef.
- Likewise for VOLATILEP. */
-
- constp = !! (specbits & 1 << (int) RID_CONST) + TYPE_READONLY (type);
- volatilep = !! (specbits & 1 << (int) RID_VOLATILE) + TYPE_VOLATILE (type);
- inlinep = !! (specbits & (1 << (int) RID_INLINE));
- if (constp > 1)
- pedwarn ("duplicate `const'");
- if (volatilep > 1)
- pedwarn ("duplicate `volatile'");
- if (! flag_gen_aux_info && (TYPE_READONLY (type) || TYPE_VOLATILE (type)))
- type = TYPE_MAIN_VARIANT (type);
-
- /* Warn if two storage classes are given. Default to `auto'. */
-
- {
- int nclasses = 0;
-
- if (specbits & 1 << (int) RID_AUTO) nclasses++;
- if (specbits & 1 << (int) RID_STATIC) nclasses++;
- if (specbits & 1 << (int) RID_EXTERN) nclasses++;
- if (specbits & 1 << (int) RID_REGISTER) nclasses++;
- if (specbits & 1 << (int) RID_TYPEDEF) nclasses++;
- if (specbits & 1 << (int) RID_ITERATOR) nclasses++;
-
- /* Warn about storage classes that are invalid for certain
- kinds of declarations (parameters, typenames, etc.). */
-
- if (nclasses > 1)
- error ("multiple storage classes in declaration of `%s'", name);
- else if (funcdef_flag
- && (specbits
- & ((1 << (int) RID_REGISTER)
- | (1 << (int) RID_AUTO)
- | (1 << (int) RID_TYPEDEF))))
- {
- if (specbits & 1 << (int) RID_AUTO
- && (pedantic || current_binding_level == global_binding_level))
- pedwarn ("function definition declared `auto'");
- if (specbits & 1 << (int) RID_REGISTER)
- error ("function definition declared `register'");
- if (specbits & 1 << (int) RID_TYPEDEF)
- error ("function definition declared `typedef'");
- specbits &= ~ ((1 << (int) RID_TYPEDEF) | (1 << (int) RID_REGISTER)
- | (1 << (int) RID_AUTO));
- }
- else if (decl_context != NORMAL && nclasses > 0)
- {
- if (decl_context == PARM && specbits & 1 << (int) RID_REGISTER)
- ;
- else
- {
- error ((decl_context == FIELD
- ? "storage class specified for structure field `%s'"
- : (decl_context == PARM
- ? "storage class specified for parameter `%s'"
- : "storage class specified for typename")),
- name);
- specbits &= ~ ((1 << (int) RID_TYPEDEF) | (1 << (int) RID_REGISTER)
- | (1 << (int) RID_AUTO) | (1 << (int) RID_STATIC)
- | (1 << (int) RID_EXTERN));
- }
- }
- else if (specbits & 1 << (int) RID_EXTERN && initialized && ! funcdef_flag)
- {
- /* `extern' with initialization is invalid if not at top level. */
- if (current_binding_level == global_binding_level)
- warning ("`%s' initialized and declared `extern'", name);
- else
- error ("`%s' has both `extern' and initializer", name);
- }
- else if (specbits & 1 << (int) RID_EXTERN && funcdef_flag
- && current_binding_level != global_binding_level)
- error ("nested function `%s' declared `extern'", name);
- else if (current_binding_level == global_binding_level
- && specbits & (1 << (int) RID_AUTO))
- error ("top-level declaration of `%s' specifies `auto'", name);
- else if ((specbits & 1 << (int) RID_ITERATOR)
- && TREE_CODE (declarator) != IDENTIFIER_NODE)
- {
- error ("iterator `%s' has derived type", name);
- type = error_mark_node;
- }
- else if ((specbits & 1 << (int) RID_ITERATOR)
- && TREE_CODE (type) != INTEGER_TYPE)
- {
- error ("iterator `%s' has noninteger type", name);
- type = error_mark_node;
- }
- }
-
- /* Now figure out the structure of the declarator proper.
- Descend through it, creating more complex types, until we reach
- the declared identifier (or NULL_TREE, in an absolute declarator). */
-
- while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE)
- {
- if (type == error_mark_node)
- {
- declarator = TREE_OPERAND (declarator, 0);
- continue;
- }
-
- /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
- an INDIRECT_REF (for *...),
- a CALL_EXPR (for ...(...)),
- an identifier (for the name being declared)
- or a null pointer (for the place in an absolute declarator
- where the name was omitted).
- For the last two cases, we have just exited the loop.
-
- At this point, TYPE is the type of elements of an array,
- or for a function to return, or for a pointer to point to.
- After this sequence of ifs, TYPE is the type of the
- array or function or pointer, and DECLARATOR has had its
- outermost layer removed. */
-
- if (TREE_CODE (declarator) == ARRAY_REF)
- {
- register tree itype = NULL_TREE;
- register tree size = TREE_OPERAND (declarator, 1);
- /* An uninitialized decl with `extern' is a reference. */
- int extern_ref = !initialized && (specbits & (1 << (int) RID_EXTERN));
-
- declarator = TREE_OPERAND (declarator, 0);
-
- /* Check for some types that there cannot be arrays of. */
-
- if (TYPE_MAIN_VARIANT (type) == void_type_node)
- {
- error ("declaration of `%s' as array of voids", name);
- type = error_mark_node;
- }
-
- if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- error ("declaration of `%s' as array of functions", name);
- type = error_mark_node;
- }
-
- if (size == error_mark_node)
- type = error_mark_node;
-
- if (type == error_mark_node)
- continue;
-
- /* If this is a block level extern, it must live past the end
- of the function so that we can check it against other extern
- declarations (IDENTIFIER_LIMBO_VALUE). */
- if (extern_ref && allocation_temporary_p ())
- end_temporary_allocation ();
-
- /* If size was specified, set ITYPE to a range-type for that size.
- Otherwise, ITYPE remains null. finish_decl may figure it out
- from an initial value. */
-
- if (size)
- {
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- STRIP_TYPE_NOPS (size);
-
- if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE
- && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE)
- {
- error ("size of array `%s' has non-integer type", name);
- size = integer_one_node;
- }
- if (pedantic && integer_zerop (size))
- pedwarn ("ANSI C forbids zero-size array `%s'", name);
- if (TREE_CODE (size) == INTEGER_CST)
- {
- constant_expression_warning (size);
- if (INT_CST_LT (size, integer_zero_node))
- {
- error ("size of array `%s' is negative", name);
- size = integer_one_node;
- }
- itype = build_index_type (size_binop (MINUS_EXPR, size,
- size_one_node));
- }
- else
- {
- if (pedantic)
- {
- if (TREE_CONSTANT (size))
- pedwarn ("ANSI C forbids array `%s' whose size can't be evaluated", name);
- else
- pedwarn ("ANSI C forbids variable-size array `%s'", name);
- }
- itype = build_binary_op (MINUS_EXPR, size, integer_one_node,
- 1);
- /* Make sure the array size remains visibly nonconstant
- even if it is (eg) a const variable with known value. */
- size_varies = 1;
- itype = variable_size (itype);
- itype = build_index_type (itype);
- }
- }
-
-#if 0 /* This had bad results for pointers to arrays, as in
- union incomplete (*foo)[4]; */
- /* Complain about arrays of incomplete types, except in typedefs. */
-
- if (TYPE_SIZE (type) == 0
- /* Avoid multiple warnings for nested array types. */
- && TREE_CODE (type) != ARRAY_TYPE
- && !(specbits & (1 << (int) RID_TYPEDEF))
- && !C_TYPE_BEING_DEFINED (type))
- warning ("array type has incomplete element type");
-#endif
-
-#if 0 /* We shouldn't have a function type here at all!
- Functions aren't allowed as array elements. */
- if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
- && (constp || volatilep))
- pedwarn ("ANSI C forbids const or volatile function types");
-#endif
-
- /* Build the array type itself, then merge any constancy or
- volatility into the target type. We must do it in this order
- to ensure that the TYPE_MAIN_VARIANT field of the array type
- is set correctly. */
-
- type = build_array_type (type, itype);
- if (constp || volatilep)
- type = c_build_type_variant (type, constp, volatilep);
-
-#if 0 /* don't clear these; leave them set so that the array type
- or the variable is itself const or volatile. */
- constp = 0;
- volatilep = 0;
-#endif
-
- if (size_varies)
- C_TYPE_VARIABLE_SIZE (type) = 1;
- }
- else if (TREE_CODE (declarator) == CALL_EXPR)
- {
- int extern_ref = (!(specbits & (1 << (int) RID_AUTO))
- || current_binding_level == global_binding_level);
- tree arg_types;
-
- /* Declaring a function type.
- Make sure we have a valid type for the function to return. */
- if (type == error_mark_node)
- continue;
-
- size_varies = 0;
-
- /* Warn about some types functions can't return. */
-
- if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- error ("`%s' declared as function returning a function", name);
- type = integer_type_node;
- }
- if (TREE_CODE (type) == ARRAY_TYPE)
- {
- error ("`%s' declared as function returning an array", name);
- type = integer_type_node;
- }
-
-#ifndef TRADITIONAL_RETURN_FLOAT
- /* Traditionally, declaring return type float means double. */
-
- if (flag_traditional && TYPE_MAIN_VARIANT (type) == float_type_node)
- type = double_type_node;
-#endif /* TRADITIONAL_RETURN_FLOAT */
-
- /* If this is a block level extern, it must live past the end
- of the function so that we can check it against other extern
- declarations (IDENTIFIER_LIMBO_VALUE). */
- if (extern_ref && allocation_temporary_p ())
- end_temporary_allocation ();
-
- /* Construct the function type and go to the next
- inner layer of declarator. */
-
- arg_types = grokparms (TREE_OPERAND (declarator, 1),
- funcdef_flag
- /* Say it's a definition
- only for the CALL_EXPR
- closest to the identifier. */
- && TREE_CODE (TREE_OPERAND (declarator, 0)) == IDENTIFIER_NODE);
-#if 0 /* This seems to be false. We turn off temporary allocation
- above in this function if -traditional.
- And this code caused inconsistent results with prototypes:
- callers would ignore them, and pass arguments wrong. */
-
- /* Omit the arg types if -traditional, since the arg types
- and the list links might not be permanent. */
- type = build_function_type (type,
- flag_traditional
- ? NULL_TREE : arg_types);
-#endif
- type = build_function_type (type, arg_types);
- declarator = TREE_OPERAND (declarator, 0);
-
- /* Set the TYPE_CONTEXTs for each tagged type which is local to
- the formal parameter list of this FUNCTION_TYPE to point to
- the FUNCTION_TYPE node itself. */
-
- {
- register tree link;
-
- for (link = current_function_parm_tags;
- link;
- link = TREE_CHAIN (link))
- TYPE_CONTEXT (TREE_VALUE (link)) = type;
- }
- }
- else if (TREE_CODE (declarator) == INDIRECT_REF)
- {
- /* Merge any constancy or volatility into the target type
- for the pointer. */
-
- if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
- && (constp || volatilep))
- pedwarn ("ANSI C forbids const or volatile function types");
- if (constp || volatilep)
- type = c_build_type_variant (type, constp, volatilep);
- constp = 0;
- volatilep = 0;
- size_varies = 0;
-
- type = build_pointer_type (type);
-
- /* Process a list of type modifier keywords
- (such as const or volatile) that were given inside the `*'. */
-
- if (TREE_TYPE (declarator))
- {
- register tree typemodlist;
- int erred = 0;
- for (typemodlist = TREE_TYPE (declarator); typemodlist;
- typemodlist = TREE_CHAIN (typemodlist))
- {
- if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_CONST])
- constp++;
- else if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_VOLATILE])
- volatilep++;
- else if (!erred)
- {
- erred = 1;
- error ("invalid type modifier within pointer declarator");
- }
- }
- if (constp > 1)
- pedwarn ("duplicate `const'");
- if (volatilep > 1)
- pedwarn ("duplicate `volatile'");
- }
-
- declarator = TREE_OPERAND (declarator, 0);
- }
- else
- abort ();
-
- }
-
- /* Now TYPE has the actual type. */
-
- /* If this is declaring a typedef name, return a TYPE_DECL. */
-
- if (specbits & (1 << (int) RID_TYPEDEF))
- {
- tree decl;
- /* Note that the grammar rejects storage classes
- in typenames, fields or parameters */
- if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
- && (constp || volatilep))
- pedwarn ("ANSI C forbids const or volatile function types");
- if (constp || volatilep)
- type = c_build_type_variant (type, constp, volatilep);
- pop_obstacks ();
- decl = build_decl (TYPE_DECL, declarator, type);
- if ((specbits & (1 << (int) RID_SIGNED))
- || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
- C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
- return decl;
- }
-
- /* Detect the case of an array type of unspecified size
- which came, as such, direct from a typedef name.
- We must copy the type, so that each identifier gets
- a distinct type, so that each identifier's size can be
- controlled separately by its own initializer. */
-
- if (type != 0 && typedef_type != 0
- && TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (typedef_type)
- && TREE_CODE (type) == ARRAY_TYPE && TYPE_DOMAIN (type) == 0)
- {
- type = build_array_type (TREE_TYPE (type), 0);
- if (size_varies)
- C_TYPE_VARIABLE_SIZE (type) = 1;
- }
-
- /* If this is a type name (such as, in a cast or sizeof),
- compute the type and return it now. */
-
- if (decl_context == TYPENAME)
- {
- /* Note that the grammar rejects storage classes
- in typenames, fields or parameters */
- if (pedantic && TREE_CODE (type) == FUNCTION_TYPE
- && (constp || volatilep))
- pedwarn ("ANSI C forbids const or volatile function types");
- if (constp || volatilep)
- type = c_build_type_variant (type, constp, volatilep);
- pop_obstacks ();
- return type;
- }
-
- /* `void' at top level (not within pointer)
- is allowed only in typedefs or type names.
- We don't complain about parms either, but that is because
- a better error message can be made later. */
-
- if (TYPE_MAIN_VARIANT (type) == void_type_node && decl_context != PARM)
- {
- error ("variable or field `%s' declared void",
- IDENTIFIER_POINTER (declarator));
- type = integer_type_node;
- }
-
- /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
- or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
-
- {
- register tree decl;
-
- if (decl_context == PARM)
- {
- tree type_as_written = type;
- tree main_type;
-
- /* A parameter declared as an array of T is really a pointer to T.
- One declared as a function is really a pointer to a function. */
-
- if (TREE_CODE (type) == ARRAY_TYPE)
- {
- /* Transfer const-ness of array into that of type pointed to. */
- type = build_pointer_type
- (c_build_type_variant (TREE_TYPE (type), constp, volatilep));
- volatilep = constp = 0;
- size_varies = 0;
- }
- else if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- if (pedantic && (constp || volatilep))
- pedwarn ("ANSI C forbids const or volatile function types");
- type = build_pointer_type (c_build_type_variant (type, constp, volatilep));
- volatilep = constp = 0;
- }
-
- decl = build_decl (PARM_DECL, declarator, type);
- if (size_varies)
- C_DECL_VARIABLE_SIZE (decl) = 1;
-
- /* Compute the type actually passed in the parmlist,
- for the case where there is no prototype.
- (For example, shorts and chars are passed as ints.)
- When there is a prototype, this is overridden later. */
-
- DECL_ARG_TYPE (decl) = type;
- main_type = (type == error_mark_node
- ? error_mark_node
- : TYPE_MAIN_VARIANT (type));
- if (main_type == float_type_node)
- DECL_ARG_TYPE (decl) = double_type_node;
- /* Don't use TYPE_PRECISION to decide whether to promote,
- because we should convert short if it's the same size as int,
- but we should not convert long if it's the same size as int. */
- else if (TREE_CODE (main_type) != ERROR_MARK
- && C_PROMOTING_INTEGER_TYPE_P (main_type))
- {
- if (TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node)
- && TREE_UNSIGNED (type))
- DECL_ARG_TYPE (decl) = unsigned_type_node;
- else
- DECL_ARG_TYPE (decl) = integer_type_node;
- }
-
- DECL_ARG_TYPE_AS_WRITTEN (decl) = type_as_written;
- }
- else if (decl_context == FIELD)
- {
- /* Structure field. It may not be a function. */
-
- if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- error ("field `%s' declared as a function",
- IDENTIFIER_POINTER (declarator));
- type = build_pointer_type (type);
- }
- else if (TREE_CODE (type) != ERROR_MARK && TYPE_SIZE (type) == 0)
- {
- error ("field `%s' has incomplete type",
- IDENTIFIER_POINTER (declarator));
- type = error_mark_node;
- }
- /* Move type qualifiers down to element of an array. */
- if (TREE_CODE (type) == ARRAY_TYPE && (constp || volatilep))
- {
- type = build_array_type (c_build_type_variant (TREE_TYPE (type),
- constp, volatilep),
- TYPE_DOMAIN (type));
-#if 0 /* Leave the field const or volatile as well. */
- constp = volatilep = 0;
-#endif
- }
- decl = build_decl (FIELD_DECL, declarator, type);
- if (size_varies)
- C_DECL_VARIABLE_SIZE (decl) = 1;
- }
- else if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- /* Every function declaration is "external"
- except for those which are inside a function body
- in which `auto' is used.
- That is a case not specified by ANSI C,
- and we use it for forward declarations for nested functions. */
- int extern_ref = (!(specbits & (1 << (int) RID_AUTO))
- || current_binding_level == global_binding_level);
-
- if (specbits & (1 << (int) RID_AUTO)
- && (pedantic || current_binding_level == global_binding_level))
- pedwarn ("invalid storage class for function `%s'",
- IDENTIFIER_POINTER (declarator));
- if (specbits & (1 << (int) RID_REGISTER))
- error ("invalid storage class for function `%s'",
- IDENTIFIER_POINTER (declarator));
- /* Function declaration not at top level.
- Storage classes other than `extern' are not allowed
- and `extern' makes no difference. */
- if (current_binding_level != global_binding_level
- && (specbits & ((1 << (int) RID_STATIC) | (1 << (int) RID_INLINE)))
- && pedantic)
- pedwarn ("invalid storage class for function `%s'",
- IDENTIFIER_POINTER (declarator));
-
- /* If this is a block level extern, it must live past the end
- of the function so that we can check it against other
- extern declarations (IDENTIFIER_LIMBO_VALUE). */
- if (extern_ref && allocation_temporary_p ())
- end_temporary_allocation ();
-
- decl = build_decl (FUNCTION_DECL, declarator, type);
-
- if (pedantic && (constp || volatilep)
- && ! DECL_IN_SYSTEM_HEADER (decl))
- pedwarn ("ANSI C forbids const or volatile functions");
-
- if (extern_ref)
- DECL_EXTERNAL (decl) = 1;
- /* Record absence of global scope for `static' or `auto'. */
- TREE_PUBLIC (decl)
- = !(specbits & ((1 << (int) RID_STATIC) | (1 << (int) RID_AUTO)));
- /* Record presence of `inline', if it is reasonable. */
- if (inlinep)
- {
- tree last = tree_last (TYPE_ARG_TYPES (type));
-
- if (! strcmp (IDENTIFIER_POINTER (declarator), "main"))
- warning ("cannot inline function `main'");
- else if (last && (TYPE_MAIN_VARIANT (TREE_VALUE (last))
- != void_type_node))
- warning ("inline declaration ignored for function with `...'");
- else
- /* Assume that otherwise the function can be inlined. */
- DECL_INLINE (decl) = 1;
-
- if (specbits & (1 << (int) RID_EXTERN))
- current_extern_inline = 1;
- }
- }
- else
- {
- /* It's a variable. */
- /* An uninitialized decl with `extern' is a reference. */
- int extern_ref = !initialized && (specbits & (1 << (int) RID_EXTERN));
-
- /* Move type qualifiers down to element of an array. */
- if (TREE_CODE (type) == ARRAY_TYPE && (constp || volatilep))
- {
- type = build_array_type (c_build_type_variant (TREE_TYPE (type),
- constp, volatilep),
- TYPE_DOMAIN (type));
-#if 0 /* Leave the variable const or volatile as well. */
- constp = volatilep = 0;
-#endif
- }
-
- /* If this is a block level extern, it must live past the end
- of the function so that we can check it against other
- extern declarations (IDENTIFIER_LIMBO_VALUE). */
- if (extern_ref && allocation_temporary_p ())
- end_temporary_allocation ();
-
- decl = build_decl (VAR_DECL, declarator, type);
- if (size_varies)
- C_DECL_VARIABLE_SIZE (decl) = 1;
-
- if (inlinep)
- pedwarn_with_decl (decl, "variable `%s' declared `inline'");
-
- DECL_EXTERNAL (decl) = extern_ref;
- /* At top level, the presence of a `static' or `register' storage
- class specifier, or the absence of all storage class specifiers
- makes this declaration a definition (perhaps tentative). Also,
- the absence of both `static' and `register' makes it public. */
- if (current_binding_level == global_binding_level)
- {
- TREE_PUBLIC (decl)
- = !(specbits
- & ((1 << (int) RID_STATIC) | (1 << (int) RID_REGISTER)));
- TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
- }
- /* Not at top level, only `static' makes a static definition. */
- else
- {
- TREE_STATIC (decl) = (specbits & (1 << (int) RID_STATIC)) != 0;
- TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
- }
-
- if (specbits & 1 << (int) RID_ITERATOR)
- ITERATOR_P (decl) = 1;
- }
-
- /* Record `register' declaration for warnings on &
- and in case doing stupid register allocation. */
-
- if (specbits & (1 << (int) RID_REGISTER))
- DECL_REGISTER (decl) = 1;
-
- /* Record constancy and volatility. */
-
- if (constp)
- TREE_READONLY (decl) = 1;
- if (volatilep)
- {
- TREE_SIDE_EFFECTS (decl) = 1;
- TREE_THIS_VOLATILE (decl) = 1;
- }
- /* If a type has volatile components, it should be stored in memory.
- Otherwise, the fact that those components are volatile
- will be ignored, and would even crash the compiler. */
- if (C_TYPE_FIELDS_VOLATILE (TREE_TYPE (decl)))
- mark_addressable (decl);
-
- pop_obstacks ();
-
- return decl;
- }
-}
-
-/* Decode the parameter-list info for a function type or function definition.
- The argument is the value returned by `get_parm_info' (or made in parse.y
- if there is an identifier list instead of a parameter decl list).
- These two functions are separate because when a function returns
- or receives functions then each is called multiple times but the order
- of calls is different. The last call to `grokparms' is always the one
- that contains the formal parameter names of a function definition.
-
- Store in `last_function_parms' a chain of the decls of parms.
- Also store in `last_function_parm_tags' a chain of the struct, union,
- and enum tags declared among the parms.
-
- Return a list of arg types to use in the FUNCTION_TYPE for this function.
-
- FUNCDEF_FLAG is nonzero for a function definition, 0 for
- a mere declaration. A nonempty identifier-list gets an error message
- when FUNCDEF_FLAG is zero. */
-
-static tree
-grokparms (parms_info, funcdef_flag)
- tree parms_info;
- int funcdef_flag;
-{
- tree first_parm = TREE_CHAIN (parms_info);
-
- last_function_parms = TREE_PURPOSE (parms_info);
- last_function_parm_tags = TREE_VALUE (parms_info);
-
- if (warn_strict_prototypes && first_parm == 0 && !funcdef_flag
- && !in_system_header)
- warning ("function declaration isn't a prototype");
-
- if (first_parm != 0
- && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE)
- {
- if (! funcdef_flag)
- pedwarn ("parameter names (without types) in function declaration");
-
- last_function_parms = first_parm;
- return 0;
- }
- else
- {
- tree parm;
- tree typelt;
- /* We no longer test FUNCDEF_FLAG.
- If the arg types are incomplete in a declaration,
- they must include undefined tags.
- These tags can never be defined in the scope of the declaration,
- so the types can never be completed,
- and no call can be compiled successfully. */
-#if 0
- /* In a fcn definition, arg types must be complete. */
- if (funcdef_flag)
-#endif
- for (parm = last_function_parms, typelt = first_parm;
- parm;
- parm = TREE_CHAIN (parm))
- /* Skip over any enumeration constants declared here. */
- if (TREE_CODE (parm) == PARM_DECL)
- {
- /* Barf if the parameter itself has an incomplete type. */
- tree type = TREE_VALUE (typelt);
- if (TYPE_SIZE (type) == 0)
- {
- if (funcdef_flag && DECL_NAME (parm) != 0)
- error ("parameter `%s' has incomplete type",
- IDENTIFIER_POINTER (DECL_NAME (parm)));
- else
- warning ("parameter has incomplete type");
- if (funcdef_flag)
- {
- TREE_VALUE (typelt) = error_mark_node;
- TREE_TYPE (parm) = error_mark_node;
- }
- }
-#if 0 /* This has been replaced by parm_tags_warning
- which uses a more accurate criterion for what to warn about. */
- else
- {
- /* Now warn if is a pointer to an incomplete type. */
- while (TREE_CODE (type) == POINTER_TYPE
- || TREE_CODE (type) == REFERENCE_TYPE)
- type = TREE_TYPE (type);
- type = TYPE_MAIN_VARIANT (type);
- if (TYPE_SIZE (type) == 0)
- {
- if (DECL_NAME (parm) != 0)
- warning ("parameter `%s' points to incomplete type",
- IDENTIFIER_POINTER (DECL_NAME (parm)));
- else
- warning ("parameter points to incomplete type");
- }
- }
-#endif
- typelt = TREE_CHAIN (typelt);
- }
-
- /* Allocate the list of types the way we allocate a type. */
- if (first_parm && ! TREE_PERMANENT (first_parm))
- {
- /* Construct a copy of the list of types
- on the saveable obstack. */
- tree result = NULL;
- for (typelt = first_parm; typelt; typelt = TREE_CHAIN (typelt))
- result = saveable_tree_cons (NULL_TREE, TREE_VALUE (typelt),
- result);
- return nreverse (result);
- }
- else
- /* The list we have is permanent already. */
- return first_parm;
- }
-}
-
-
-/* Return a tree_list node with info on a parameter list just parsed.
- The TREE_PURPOSE is a chain of decls of those parms.
- The TREE_VALUE is a list of structure, union and enum tags defined.
- The TREE_CHAIN is a list of argument types to go in the FUNCTION_TYPE.
- This tree_list node is later fed to `grokparms'.
-
- VOID_AT_END nonzero means append `void' to the end of the type-list.
- Zero means the parmlist ended with an ellipsis so don't append `void'. */
-
-tree
-get_parm_info (void_at_end)
- int void_at_end;
-{
- register tree decl, t;
- register tree types = 0;
- int erred = 0;
- tree tags = gettags ();
- tree parms = getdecls ();
- tree new_parms = 0;
- tree order = current_binding_level->parm_order;
-
- /* Just `void' (and no ellipsis) is special. There are really no parms. */
- if (void_at_end && parms != 0
- && TREE_CHAIN (parms) == 0
- && TYPE_MAIN_VARIANT (TREE_TYPE (parms)) == void_type_node
- && DECL_NAME (parms) == 0)
- {
- parms = NULL_TREE;
- storedecls (NULL_TREE);
- return saveable_tree_cons (NULL_TREE, NULL_TREE,
- saveable_tree_cons (NULL_TREE, void_type_node, NULL_TREE));
- }
-
- /* Extract enumerator values and other non-parms declared with the parms.
- Likewise any forward parm decls that didn't have real parm decls. */
- for (decl = parms; decl; )
- {
- tree next = TREE_CHAIN (decl);
-
- if (TREE_CODE (decl) != PARM_DECL)
- {
- TREE_CHAIN (decl) = new_parms;
- new_parms = decl;
- }
- else if (TREE_ASM_WRITTEN (decl))
- {
- error_with_decl (decl, "parameter `%s' has just a forward declaration");
- TREE_CHAIN (decl) = new_parms;
- new_parms = decl;
- }
- decl = next;
- }
-
- /* Put the parm decls back in the order they were in in the parm list. */
- for (t = order; t; t = TREE_CHAIN (t))
- {
- if (TREE_CHAIN (t))
- TREE_CHAIN (TREE_VALUE (t)) = TREE_VALUE (TREE_CHAIN (t));
- else
- TREE_CHAIN (TREE_VALUE (t)) = 0;
- }
-
- new_parms = chainon (order ? nreverse (TREE_VALUE (order)) : 0,
- new_parms);
-
- /* Store the parmlist in the binding level since the old one
- is no longer a valid list. (We have changed the chain pointers.) */
- storedecls (new_parms);
-
- for (decl = new_parms; decl; decl = TREE_CHAIN (decl))
- /* There may also be declarations for enumerators if an enumeration
- type is declared among the parms. Ignore them here. */
- if (TREE_CODE (decl) == PARM_DECL)
- {
- /* Since there is a prototype,
- args are passed in their declared types. */
- tree type = TREE_TYPE (decl);
- DECL_ARG_TYPE (decl) = type;
-#ifdef PROMOTE_PROTOTYPES
- if (TREE_CODE (type) == INTEGER_TYPE
- && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
- DECL_ARG_TYPE (decl) = integer_type_node;
-#endif
-
- types = saveable_tree_cons (NULL_TREE, TREE_TYPE (decl), types);
- if (TYPE_MAIN_VARIANT (TREE_VALUE (types)) == void_type_node && ! erred
- && DECL_NAME (decl) == 0)
- {
- error ("`void' in parameter list must be the entire list");
- erred = 1;
- }
- }
-
- if (void_at_end)
- return saveable_tree_cons (new_parms, tags,
- nreverse (saveable_tree_cons (NULL_TREE, void_type_node, types)));
-
- return saveable_tree_cons (new_parms, tags, nreverse (types));
-}
-
-/* At end of parameter list, warn about any struct, union or enum tags
- defined within. Do so because these types cannot ever become complete. */
-
-void
-parmlist_tags_warning ()
-{
- tree elt;
- static int already;
-
- for (elt = current_binding_level->tags; elt; elt = TREE_CHAIN (elt))
- {
- enum tree_code code = TREE_CODE (TREE_VALUE (elt));
- /* An anonymous union parm type is meaningful as a GNU extension.
- So don't warn for that. */
- if (code == UNION_TYPE && !pedantic)
- continue;
- if (TREE_PURPOSE (elt) != 0)
- warning ("`%s %s' declared inside parameter list",
- (code == RECORD_TYPE ? "struct"
- : code == UNION_TYPE ? "union"
- : "enum"),
- IDENTIFIER_POINTER (TREE_PURPOSE (elt)));
- else
- warning ("anonymous %s declared inside parameter list",
- (code == RECORD_TYPE ? "struct"
- : code == UNION_TYPE ? "union"
- : "enum"));
-
- if (! already)
- {
- warning ("its scope is only this definition or declaration,");
- warning ("which is probably not what you want.");
- already = 1;
- }
- }
-}
-
-/* Get the struct, enum or union (CODE says which) with tag NAME.
- Define the tag as a forward-reference if it is not defined. */
-
-tree
-xref_tag (code, name)
- enum tree_code code;
- tree name;
-{
- int temporary = allocation_temporary_p ();
-
- /* If a cross reference is requested, look up the type
- already defined for this tag and return it. */
-
- register tree ref = lookup_tag (code, name, current_binding_level, 0);
- /* Even if this is the wrong type of tag, return what we found.
- There will be an error message anyway, from pending_xref_error.
- If we create an empty xref just for an invalid use of the type,
- the main result is to create lots of superfluous error messages. */
- if (ref)
- return ref;
-
- push_obstacks_nochange ();
-
- if (current_binding_level == global_binding_level && temporary)
- end_temporary_allocation ();
-
- /* If no such tag is yet defined, create a forward-reference node
- and record it as the "definition".
- When a real declaration of this type is found,
- the forward-reference will be altered into a real type. */
-
- ref = make_node (code);
- if (code == ENUMERAL_TYPE)
- {
- /* (In ANSI, Enums can be referred to only if already defined.) */
- if (pedantic)
- pedwarn ("ANSI C forbids forward references to `enum' types");
- /* Give the type a default layout like unsigned int
- to avoid crashing if it does not get defined. */
- TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node);
- TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node);
- TREE_UNSIGNED (ref) = 1;
- TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node);
- TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node);
- TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node);
- }
-
- pushtag (name, ref);
-
- pop_obstacks ();
-
- return ref;
-}
-
-/* Make sure that the tag NAME is defined *in the current binding level*
- at least as a forward reference.
- CODE says which kind of tag NAME ought to be.
-
- We also do a push_obstacks_nochange
- whose matching pop is in finish_struct. */
-
-tree
-start_struct (code, name)
- enum tree_code code;
- tree name;
-{
- /* If there is already a tag defined at this binding level
- (as a forward reference), just return it. */
-
- register tree ref = 0;
-
- push_obstacks_nochange ();
- if (current_binding_level == global_binding_level)
- end_temporary_allocation ();
-
- if (name != 0)
- ref = lookup_tag (code, name, current_binding_level, 1);
- if (ref && TREE_CODE (ref) == code)
- {
- C_TYPE_BEING_DEFINED (ref) = 1;
- if (TYPE_FIELDS (ref))
- error ((code == UNION_TYPE ? "redefinition of `union %s'"
- : "redefinition of `struct %s'"),
- IDENTIFIER_POINTER (name));
-
- return ref;
- }
-
- /* Otherwise create a forward-reference just so the tag is in scope. */
-
- ref = make_node (code);
- pushtag (name, ref);
- C_TYPE_BEING_DEFINED (ref) = 1;
- return ref;
-}
-
-/* Process the specs, declarator (NULL if omitted) and width (NULL if omitted)
- of a structure component, returning a FIELD_DECL node.
- WIDTH is non-NULL for bit fields only, and is an INTEGER_CST node.
-
- This is done during the parsing of the struct declaration.
- The FIELD_DECL nodes are chained together and the lot of them
- are ultimately passed to `build_struct' to make the RECORD_TYPE node. */
-
-tree
-grokfield (filename, line, declarator, declspecs, width)
- char *filename;
- int line;
- tree declarator, declspecs, width;
-{
- tree value;
-
- /* The corresponding pop_obstacks is in finish_decl. */
- push_obstacks_nochange ();
-
- value = grokdeclarator (declarator, declspecs, width ? BITFIELD : FIELD, 0);
-
- finish_decl (value, NULL_TREE, NULL_TREE);
- DECL_INITIAL (value) = width;
-
- maybe_objc_check_decl (value);
- return value;
-}
-
-/* Function to help qsort sort FIELD_DECLs by name order. */
-
-static int
-field_decl_cmp (x, y)
- tree *x, *y;
-{
- return (long)DECL_NAME (*x) - (long)DECL_NAME (*y);
-}
-
-/* Fill in the fields of a RECORD_TYPE or UNION_TYPE node, T.
- FIELDLIST is a chain of FIELD_DECL nodes for the fields.
-
- We also do a pop_obstacks to match the push in start_struct. */
-
-tree
-finish_struct (t, fieldlist)
- register tree t, fieldlist;
-{
- register tree x;
- int old_momentary;
- int toplevel = global_binding_level == current_binding_level;
-
- /* If this type was previously laid out as a forward reference,
- make sure we lay it out again. */
-
- TYPE_SIZE (t) = 0;
-
- /* Nameless union parm types are useful as GCC extension. */
- if (! (TREE_CODE (t) == UNION_TYPE && TYPE_NAME (t) == 0) && !pedantic)
- /* Otherwise, warn about any struct or union def. in parmlist. */
- if (in_parm_level_p ())
- {
- if (pedantic)
- pedwarn ((TREE_CODE (t) == UNION_TYPE ? "union defined inside parms"
- : "structure defined inside parms"));
- else if (! flag_traditional)
- warning ((TREE_CODE (t) == UNION_TYPE ? "union defined inside parms"
- : "structure defined inside parms"));
- }
-
- old_momentary = suspend_momentary ();
-
- if (fieldlist == 0 && pedantic)
- pedwarn ((TREE_CODE (t) == UNION_TYPE ? "union has no members"
- : "structure has no members"));
-
- /* Install struct as DECL_CONTEXT of each field decl.
- Also process specified field sizes.
- Set DECL_FIELD_SIZE to the specified size, or 0 if none specified.
- The specified size is found in the DECL_INITIAL.
- Store 0 there, except for ": 0" fields (so we can find them
- and delete them, below). */
-
- for (x = fieldlist; x; x = TREE_CHAIN (x))
- {
- DECL_CONTEXT (x) = t;
- DECL_FIELD_SIZE (x) = 0;
-
- /* If any field is const, the structure type is pseudo-const. */
- if (TREE_READONLY (x))
- C_TYPE_FIELDS_READONLY (t) = 1;
- else
- {
- /* A field that is pseudo-const makes the structure likewise. */
- tree t1 = TREE_TYPE (x);
- while (TREE_CODE (t1) == ARRAY_TYPE)
- t1 = TREE_TYPE (t1);
- if ((TREE_CODE (t1) == RECORD_TYPE || TREE_CODE (t1) == UNION_TYPE)
- && C_TYPE_FIELDS_READONLY (t1))
- C_TYPE_FIELDS_READONLY (t) = 1;
- }
-
- /* Any field that is volatile means variables of this type must be
- treated in some ways as volatile. */
- if (TREE_THIS_VOLATILE (x))
- C_TYPE_FIELDS_VOLATILE (t) = 1;
-
- /* Any field of nominal variable size implies structure is too. */
- if (C_DECL_VARIABLE_SIZE (x))
- C_TYPE_VARIABLE_SIZE (t) = 1;
-
- /* Detect invalid nested redefinition. */
- if (TREE_TYPE (x) == t)
- error ("nested redefinition of `%s'",
- IDENTIFIER_POINTER (TYPE_NAME (t)));
-
- /* Detect invalid bit-field size. */
- if (DECL_INITIAL (x))
- STRIP_NOPS (DECL_INITIAL (x));
- if (DECL_INITIAL (x))
- {
- if (TREE_CODE (DECL_INITIAL (x)) == INTEGER_CST)
- constant_expression_warning (DECL_INITIAL (x));
- else
- {
- error_with_decl (x, "bit-field `%s' width not an integer constant");
- DECL_INITIAL (x) = NULL;
- }
- }
-
- /* Detect invalid bit-field type. */
- if (DECL_INITIAL (x)
- && TREE_CODE (TREE_TYPE (x)) != INTEGER_TYPE
- && TREE_CODE (TREE_TYPE (x)) != ENUMERAL_TYPE)
- {
- error_with_decl (x, "bit-field `%s' has invalid type");
- DECL_INITIAL (x) = NULL;
- }
- if (DECL_INITIAL (x) && pedantic
- && TYPE_MAIN_VARIANT (TREE_TYPE (x)) != integer_type_node
- && TYPE_MAIN_VARIANT (TREE_TYPE (x)) != unsigned_type_node)
- pedwarn_with_decl (x, "bit-field `%s' type invalid in ANSI C");
-
- /* Detect and ignore out of range field width. */
- if (DECL_INITIAL (x))
- {
- unsigned HOST_WIDE_INT width = TREE_INT_CST_LOW (DECL_INITIAL (x));
-
- if (tree_int_cst_lt (DECL_INITIAL (x), integer_zero_node))
- {
- DECL_INITIAL (x) = NULL;
- error_with_decl (x, "negative width in bit-field `%s'");
- }
- else if (TREE_INT_CST_HIGH (DECL_INITIAL (x)) != 0
- || width > TYPE_PRECISION (TREE_TYPE (x)))
- {
- DECL_INITIAL (x) = NULL;
- pedwarn_with_decl (x, "width of `%s' exceeds its type");
- }
- else if (width == 0 && DECL_NAME (x) != 0)
- {
- error_with_decl (x, "zero width for bit-field `%s'");
- DECL_INITIAL (x) = NULL;
- }
- }
-
- /* Process valid field width. */
- if (DECL_INITIAL (x))
- {
- register int width = TREE_INT_CST_LOW (DECL_INITIAL (x));
-
- DECL_FIELD_SIZE (x) = width;
- DECL_BIT_FIELD (x) = 1;
- DECL_INITIAL (x) = NULL;
-
- if (width == 0)
- {
- /* field size 0 => force desired amount of alignment. */
-#ifdef EMPTY_FIELD_BOUNDARY
- DECL_ALIGN (x) = MAX (DECL_ALIGN (x), EMPTY_FIELD_BOUNDARY);
-#endif
-#ifdef PCC_BITFIELD_TYPE_MATTERS
- DECL_ALIGN (x) = MAX (DECL_ALIGN (x),
- TYPE_ALIGN (TREE_TYPE (x)));
-#endif
- }
- }
- else
- {
- int min_align = (DECL_PACKED (x) ? BITS_PER_UNIT
- : TYPE_ALIGN (TREE_TYPE (x)));
- /* Non-bit-fields are aligned for their type, except packed
- fields which require only BITS_PER_UNIT alignment. */
- DECL_ALIGN (x) = MAX (DECL_ALIGN (x), min_align);
- }
- }
-
- /* Now DECL_INITIAL is null on all members. */
-
- /* Delete all duplicate fields from the fieldlist */
- for (x = fieldlist; x && TREE_CHAIN (x);)
- /* Anonymous fields aren't duplicates. */
- if (DECL_NAME (TREE_CHAIN (x)) == 0)
- x = TREE_CHAIN (x);
- else
- {
- register tree y = fieldlist;
-
- while (1)
- {
- if (DECL_NAME (y) == DECL_NAME (TREE_CHAIN (x)))
- break;
- if (y == x)
- break;
- y = TREE_CHAIN (y);
- }
- if (DECL_NAME (y) == DECL_NAME (TREE_CHAIN (x)))
- {
- error_with_decl (TREE_CHAIN (x), "duplicate member `%s'");
- TREE_CHAIN (x) = TREE_CHAIN (TREE_CHAIN (x));
- }
- else x = TREE_CHAIN (x);
- }
-
- /* Now we have the nearly final fieldlist. Record it,
- then lay out the structure or union (including the fields). */
-
- TYPE_FIELDS (t) = fieldlist;
-
- layout_type (t);
-
- /* Delete all zero-width bit-fields from the front of the fieldlist */
- while (fieldlist
- && DECL_INITIAL (fieldlist))
- fieldlist = TREE_CHAIN (fieldlist);
- /* Delete all such members from the rest of the fieldlist */
- for (x = fieldlist; x;)
- {
- if (TREE_CHAIN (x) && DECL_INITIAL (TREE_CHAIN (x)))
- TREE_CHAIN (x) = TREE_CHAIN (TREE_CHAIN (x));
- else x = TREE_CHAIN (x);
- }
-
- /* Now we have the truly final field list.
- Store it in this type and in the variants. */
-
- TYPE_FIELDS (t) = fieldlist;
-
- /* If there are lots of fields, sort so we can look through them fast.
- We arbitrarily consider 16 or more elts to be "a lot". */
- {
- int len = 0;
-
- for (x = fieldlist; x; x = TREE_CHAIN (x))
- {
- if (len > 15)
- break;
- len += 1;
- }
- if (len > 15)
- {
- tree *field_array;
- char *space;
-
- len += list_length (x);
- /* Use the same allocation policy here that make_node uses, to
- ensure that this lives as long as the rest of the struct decl.
- All decls in an inline function need to be saved. */
- if (allocation_temporary_p ())
- space = savealloc (sizeof (struct lang_type) + len * sizeof (tree));
- else
- space = oballoc (sizeof (struct lang_type) + len * sizeof (tree));
-
- TYPE_LANG_SPECIFIC (t) = (struct lang_type *) space;
- TYPE_LANG_SPECIFIC (t)->len = len;
-
- field_array = &TYPE_LANG_SPECIFIC (t)->elts[0];
- len = 0;
- for (x = fieldlist; x; x = TREE_CHAIN (x))
- field_array[len++] = x;
-
- qsort (field_array, len, sizeof (tree), field_decl_cmp);
- }
- }
-
- for (x = TYPE_MAIN_VARIANT (t); x; x = TYPE_NEXT_VARIANT (x))
- {
- TYPE_FIELDS (x) = TYPE_FIELDS (t);
- TYPE_LANG_SPECIFIC (x) = TYPE_LANG_SPECIFIC (t);
- TYPE_ALIGN (x) = TYPE_ALIGN (t);
- }
-
- /* Promote each bit-field's type to int if it is narrower than that. */
- for (x = fieldlist; x; x = TREE_CHAIN (x))
- if (DECL_BIT_FIELD (x)
- && (C_PROMOTING_INTEGER_TYPE_P (TREE_TYPE (x))
- || DECL_FIELD_SIZE (x) < TYPE_PRECISION (integer_type_node)))
- {
- tree type = TREE_TYPE (x);
-
- /* Preserve unsignedness if traditional
- or if not really getting any wider. */
- if (TREE_UNSIGNED (type)
- && (flag_traditional
- ||
- (TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node)
- &&
- DECL_FIELD_SIZE (x) == TYPE_PRECISION (integer_type_node))))
- TREE_TYPE (x) = unsigned_type_node;
- else
- TREE_TYPE (x) = integer_type_node;
- }
-
- /* If this structure or union completes the type of any previous
- variable declaration, lay it out and output its rtl. */
-
- if (current_binding_level->n_incomplete != 0)
- {
- tree decl;
- for (decl = current_binding_level->names; decl; decl = TREE_CHAIN (decl))
- {
- if (TREE_TYPE (decl) == t
- && TREE_CODE (decl) != TYPE_DECL)
- {
- layout_decl (decl, 0);
- /* This is a no-op in c-lang.c or something real in objc-actions.c. */
- maybe_objc_check_decl (decl);
- rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0);
- if (! toplevel)
- expand_decl (decl);
- --current_binding_level->n_incomplete;
- }
- else if (TYPE_SIZE (TREE_TYPE (decl)) == 0
- && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE)
- {
- tree element = TREE_TYPE (decl);
- while (TREE_CODE (element) == ARRAY_TYPE)
- element = TREE_TYPE (element);
- if (element == t)
- layout_array_type (TREE_TYPE (decl));
- }
- }
- }
-
- resume_momentary (old_momentary);
-
- /* Finish debugging output for this type. */
- rest_of_type_compilation (t, toplevel);
-
- /* The matching push is in start_struct. */
- pop_obstacks ();
-
- return t;
-}
-
-/* Lay out the type T, and its element type, and so on. */
-
-static void
-layout_array_type (t)
- tree t;
-{
- if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE)
- layout_array_type (TREE_TYPE (t));
- layout_type (t);
-}
-
-/* Begin compiling the definition of an enumeration type.
- NAME is its name (or null if anonymous).
- Returns the type object, as yet incomplete.
- Also records info about it so that build_enumerator
- may be used to declare the individual values as they are read. */
-
-tree
-start_enum (name)
- tree name;
-{
- register tree enumtype = 0;
-
- /* If this is the real definition for a previous forward reference,
- fill in the contents in the same object that used to be the
- forward reference. */
-
- if (name != 0)
- enumtype = lookup_tag (ENUMERAL_TYPE, name, current_binding_level, 1);
-
- /* The corresponding pop_obstacks is in finish_enum. */
- push_obstacks_nochange ();
- /* If these symbols and types are global, make them permanent. */
- if (current_binding_level == global_binding_level)
- end_temporary_allocation ();
-
- if (enumtype == 0 || TREE_CODE (enumtype) != ENUMERAL_TYPE)
- {
- enumtype = make_node (ENUMERAL_TYPE);
- pushtag (name, enumtype);
- }
-
- C_TYPE_BEING_DEFINED (enumtype) = 1;
-
- if (TYPE_VALUES (enumtype) != 0)
- {
- /* This enum is a named one that has been declared already. */
- error ("redeclaration of `enum %s'", IDENTIFIER_POINTER (name));
-
- /* Completely replace its old definition.
- The old enumerators remain defined, however. */
- TYPE_VALUES (enumtype) = 0;
- }
-
- enum_next_value = integer_zero_node;
- enum_overflow = 0;
-
- return enumtype;
-}
-
-/* After processing and defining all the values of an enumeration type,
- install their decls in the enumeration type and finish it off.
- ENUMTYPE is the type object and VALUES a list of decl-value pairs.
- Returns ENUMTYPE. */
-
-tree
-finish_enum (enumtype, values)
- register tree enumtype, values;
-{
- register tree pair, tem;
- tree minnode = 0, maxnode = 0;
- register HOST_WIDE_INT maxvalue = 0;
- register HOST_WIDE_INT minvalue = 0;
- register int i;
- unsigned precision = 0;
- int toplevel = global_binding_level == current_binding_level;
- int temporary = allocation_temporary_p ();
-
- if (in_parm_level_p ())
- warning ("enum defined inside parms");
-
- /* Calculate the maximum value of any enumerator in this type. */
-
- for (pair = values; pair; pair = TREE_CHAIN (pair))
- {
- tree value = TREE_VALUE (pair);
- if (pair == values)
- minnode = maxnode = TREE_VALUE (pair);
- else
- {
- if (tree_int_cst_lt (maxnode, value))
- maxnode = value;
- if (tree_int_cst_lt (value, minnode))
- minnode = value;
- }
- }
-
- TYPE_MIN_VALUE (enumtype) = minnode;
- TYPE_MAX_VALUE (enumtype) = maxnode;
-
- /* Determine the precision this type needs. */
-
- if (TREE_INT_CST_HIGH (minnode) >= 0
- ? tree_int_cst_lt (TYPE_MAX_VALUE (unsigned_type_node), maxnode)
- : (tree_int_cst_lt (minnode, TYPE_MIN_VALUE (integer_type_node))
- || tree_int_cst_lt (TYPE_MAX_VALUE (integer_type_node), maxnode)))
- precision = TYPE_PRECISION (long_long_integer_type_node);
- else
- {
- maxvalue = TREE_INT_CST_LOW (maxnode);
- minvalue = TREE_INT_CST_LOW (minnode);
-
- if (maxvalue > 0)
- precision = floor_log2 (maxvalue) + 1;
- if (minvalue < 0)
- {
- /* Compute number of bits to represent magnitude of a negative value.
- Add one to MINVALUE since range of negative numbers
- includes the power of two. */
- unsigned negprecision = floor_log2 (-minvalue - 1) + 1;
- if (negprecision > precision)
- precision = negprecision;
- precision += 1; /* room for sign bit */
- }
-
- if (!precision)
- precision = 1;
- }
-
- if (flag_short_enums || precision > TYPE_PRECISION (integer_type_node))
- /* Use the width of the narrowest normal C type which is wide enough. */
- TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size (precision, 1));
- else
- TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node);
-
- TYPE_SIZE (enumtype) = 0;
- layout_type (enumtype);
-
- /* An enum can have some negative values; then it is signed. */
- TREE_UNSIGNED (enumtype) = ! tree_int_cst_lt (minnode, integer_zero_node);
-
- /* If the enumerators might not fit in an int, change their type now. */
- /* It seems more useful in the debugger to leave these as int
- unless the enumerator is wider than int. */
- if (TYPE_PRECISION (enumtype) <= TYPE_PRECISION (integer_type_node))
- for (pair = values; pair; pair = TREE_CHAIN (pair))
- {
- TREE_TYPE (TREE_PURPOSE (pair)) = enumtype;
- DECL_SIZE (TREE_PURPOSE (pair)) = TYPE_SIZE (enumtype);
- if (TREE_CODE (TREE_PURPOSE (pair)) != FUNCTION_DECL)
- DECL_ALIGN (TREE_PURPOSE (pair)) = TYPE_ALIGN (enumtype);
- }
-
- /* Replace the decl nodes in VALUES with their names. */
- for (pair = values; pair; pair = TREE_CHAIN (pair))
- TREE_PURPOSE (pair) = DECL_NAME (TREE_PURPOSE (pair));
-
- TYPE_VALUES (enumtype) = values;
-
- /* Fix up all variant types of this enum type. */
- for (tem = TYPE_MAIN_VARIANT (enumtype); tem; tem = TYPE_NEXT_VARIANT (tem))
- {
- TYPE_VALUES (tem) = TYPE_VALUES (enumtype);
- TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype);
- TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype);
- TYPE_SIZE (tem) = TYPE_SIZE (enumtype);
- TYPE_MODE (tem) = TYPE_MODE (enumtype);
- TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype);
- TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype);
- TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype);
- }
-
- /* Finish debugging output for this type. */
- rest_of_type_compilation (enumtype, toplevel);
-
- /* This matches a push in start_enum. */
- pop_obstacks ();
-
- return enumtype;
-}
-
-/* Build and install a CONST_DECL for one value of the
- current enumeration type (one that was begun with start_enum).
- Return a tree-list containing the CONST_DECL and its value.
- Assignment of sequential values by default is handled here. */
-
-tree
-build_enumerator (name, value)
- tree name, value;
-{
- register tree decl;
-
- /* Validate and default VALUE. */
-
- /* Remove no-op casts from the value. */
- if (value)
- STRIP_TYPE_NOPS (value);
-
- if (value != 0)
- {
- if (TREE_CODE (value) == INTEGER_CST)
- constant_expression_warning (value);
- else
- {
- error ("enumerator value for `%s' not integer constant",
- IDENTIFIER_POINTER (name));
- value = 0;
- }
- }
-
- /* Default based on previous value. */
- /* It should no longer be possible to have NON_LVALUE_EXPR
- in the default. */
- if (value == 0)
- {
- value = enum_next_value;
- if (enum_overflow)
- error ("overflow in enumeration values");
- }
-
- if (pedantic && ! int_fits_type_p (value, integer_type_node))
- {
- pedwarn ("ANSI C restricts enumerator values to range of `int'");
- value = integer_zero_node;
- }
-
- /* Set basis for default for next value. */
- enum_next_value = build_binary_op (PLUS_EXPR, value, integer_one_node, 0);
- enum_overflow = tree_int_cst_lt (enum_next_value, value);
-
- /* Now create a declaration for the enum value name. */
-
- decl = build_decl (CONST_DECL, name, integer_type_node);
- DECL_INITIAL (decl) = value;
- TREE_TYPE (value) = integer_type_node;
- pushdecl (decl);
-
- return saveable_tree_cons (decl, value, NULL_TREE);
-}
-
-/* Create the FUNCTION_DECL for a function definition.
- DECLSPECS and DECLARATOR are the parts of the declaration;
- they describe the function's name and the type it returns,
- but twisted together in a fashion that parallels the syntax of C.
-
- This function creates a binding context for the function body
- as well as setting up the FUNCTION_DECL in current_function_decl.
-
- Returns 1 on success. If the DECLARATOR is not suitable for a function
- (it defines a datum instead), we return 0, which tells
- yyparse to report a parse error.
-
- NESTED is nonzero for a function nested within another function. */
-
-int
-start_function (declspecs, declarator, nested)
- tree declarator, declspecs;
- int nested;
-{
- tree decl1, old_decl;
- tree restype;
-
- current_function_returns_value = 0; /* Assume, until we see it does. */
- current_function_returns_null = 0;
- warn_about_return_type = 0;
- current_extern_inline = 0;
- c_function_varargs = 0;
- named_labels = 0;
- shadowed_labels = 0;
-
- decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1);
-
- /* If the declarator is not suitable for a function definition,
- cause a syntax error. */
- if (decl1 == 0)
- return 0;
-
- announce_function (decl1);
-
- if (TYPE_SIZE (TREE_TYPE (TREE_TYPE (decl1))) == 0)
- {
- error ("return-type is an incomplete type");
- /* Make it return void instead. */
- TREE_TYPE (decl1)
- = build_function_type (void_type_node,
- TYPE_ARG_TYPES (TREE_TYPE (decl1)));
- }
-
- if (warn_about_return_type)
- warning ("return-type defaults to `int'");
-
- /* Save the parm names or decls from this function's declarator
- where store_parm_decls will find them. */
- current_function_parms = last_function_parms;
- current_function_parm_tags = last_function_parm_tags;
-
- /* Make the init_value nonzero so pushdecl knows this is not tentative.
- error_mark_node is replaced below (in poplevel) with the BLOCK. */
- DECL_INITIAL (decl1) = error_mark_node;
-
- /* If this definition isn't a prototype and we had a prototype declaration
- before, copy the arg type info from that prototype.
- But not if what we had before was a builtin function. */
- old_decl = lookup_name_current_level (DECL_NAME (decl1));
- if (old_decl != 0 && TREE_CODE (TREE_TYPE (old_decl)) == FUNCTION_TYPE
- && !DECL_BUILT_IN (old_decl)
- && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (decl1)))
- == TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (old_decl))))
- && TYPE_ARG_TYPES (TREE_TYPE (decl1)) == 0)
- {
- TREE_TYPE (decl1) = TREE_TYPE (old_decl);
- current_function_prototype_file = DECL_SOURCE_FILE (old_decl);
- current_function_prototype_line = DECL_SOURCE_LINE (old_decl);
- }
-
- /* Optionally warn of old-fashioned def with no previous prototype. */
- if (warn_strict_prototypes
- && TYPE_ARG_TYPES (TREE_TYPE (decl1)) == 0
- && !(old_decl != 0 && TYPE_ARG_TYPES (TREE_TYPE (old_decl)) != 0))
- warning ("function declaration isn't a prototype");
- /* Optionally warn of any global def with no previous prototype. */
- else if (warn_missing_prototypes
- && TREE_PUBLIC (decl1)
- && !(old_decl != 0 && TYPE_ARG_TYPES (TREE_TYPE (old_decl)) != 0)
- && strcmp ("main", IDENTIFIER_POINTER (DECL_NAME (decl1))))
- warning_with_decl (decl1, "no previous prototype for `%s'");
- /* Optionally warn of any def with no previous prototype
- if the function has already been used. */
- else if (warn_missing_prototypes
- && old_decl != 0 && TREE_USED (old_decl)
- && !(old_decl != 0 && TYPE_ARG_TYPES (TREE_TYPE (old_decl)) != 0))
- warning_with_decl (decl1, "`%s' was used with no prototype before its definition");
-
- /* This is a definition, not a reference.
- So normally clear DECL_EXTERNAL.
- However, `extern inline' acts like a declaration
- except for defining how to inline. So set DECL_EXTERNAL in that case. */
- DECL_EXTERNAL (decl1) = current_extern_inline;
-
- /* This function exists in static storage.
- (This does not mean `static' in the C sense!) */
- TREE_STATIC (decl1) = 1;
-
- /* A nested function is not global. */
- if (current_function_decl != 0)
- TREE_PUBLIC (decl1) = 0;
-
- /* Record the decl so that the function name is defined.
- If we already have a decl for this name, and it is a FUNCTION_DECL,
- use the old decl. */
-
- current_function_decl = pushdecl (decl1);
-
- pushlevel (0);
- declare_parm_level (1);
- current_binding_level->subblocks_tag_transparent = 1;
-
- make_function_rtl (current_function_decl);
-
- restype = TREE_TYPE (TREE_TYPE (current_function_decl));
- /* Promote the value to int before returning it. */
- if (C_PROMOTING_INTEGER_TYPE_P (restype))
- {
- /* It retains unsignedness if traditional
- or if not really getting wider. */
- if (TREE_UNSIGNED (restype)
- && (flag_traditional
- || (TYPE_PRECISION (restype)
- == TYPE_PRECISION (integer_type_node))))
- restype = unsigned_type_node;
- else
- restype = integer_type_node;
- }
- DECL_RESULT (current_function_decl)
- = build_decl (RESULT_DECL, NULL_TREE, restype);
-
- if (!nested)
- /* Allocate further tree nodes temporarily during compilation
- of this function only. */
- temporary_allocation ();
-
- /* If this fcn was already referenced via a block-scope `extern' decl
- (or an implicit decl), propagate certain information about the usage. */
- if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (current_function_decl)))
- TREE_ADDRESSABLE (current_function_decl) = 1;
-
- return 1;
-}
-
-/* Record that this function is going to be a varargs function.
- This is called before store_parm_decls, which is too early
- to call mark_varargs directly. */
-
-void
-c_mark_varargs ()
-{
- c_function_varargs = 1;
-}
-
-/* Store the parameter declarations into the current function declaration.
- This is called after parsing the parameter declarations, before
- digesting the body of the function.
-
- For an old-style definition, modify the function's type
- to specify at least the number of arguments. */
-
-void
-store_parm_decls ()
-{
- register tree fndecl = current_function_decl;
- register tree parm;
-
- /* This is either a chain of PARM_DECLs (if a prototype was used)
- or a list of IDENTIFIER_NODEs (for an old-fashioned C definition). */
- tree specparms = current_function_parms;
-
- /* This is a list of types declared among parms in a prototype. */
- tree parmtags = current_function_parm_tags;
-
- /* This is a chain of PARM_DECLs from old-style parm declarations. */
- register tree parmdecls = getdecls ();
-
- /* This is a chain of any other decls that came in among the parm
- declarations. If a parm is declared with enum {foo, bar} x;
- then CONST_DECLs for foo and bar are put here. */
- tree nonparms = 0;
-
- /* Nonzero if this definition is written with a prototype. */
- int prototype = 0;
-
- if (specparms != 0 && TREE_CODE (specparms) != TREE_LIST)
- {
- /* This case is when the function was defined with an ANSI prototype.
- The parms already have decls, so we need not do anything here
- except record them as in effect
- and complain if any redundant old-style parm decls were written. */
-
- register tree next;
- tree others = 0;
-
- prototype = 1;
-
- if (parmdecls != 0)
- {
- tree decl, link;
-
- error_with_decl (fndecl,
- "parm types given both in parmlist and separately");
- /* Get rid of the erroneous decls; don't keep them on
- the list of parms, since they might not be PARM_DECLs. */
- for (decl = current_binding_level->names;
- decl; decl = TREE_CHAIN (decl))
- if (DECL_NAME (decl))
- IDENTIFIER_LOCAL_VALUE (DECL_NAME (decl)) = 0;
- for (link = current_binding_level->shadowed;
- link; link = TREE_CHAIN (link))
- IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
- current_binding_level->names = 0;
- current_binding_level->shadowed = 0;
- }
-
- specparms = nreverse (specparms);
- for (parm = specparms; parm; parm = next)
- {
- next = TREE_CHAIN (parm);
- if (TREE_CODE (parm) == PARM_DECL)
- {
- if (DECL_NAME (parm) == 0)
- error_with_decl (parm, "parameter name omitted");
- else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == void_type_node)
- {
- error_with_decl (parm, "parameter `%s' declared void");
- /* Change the type to error_mark_node so this parameter
- will be ignored by assign_parms. */
- TREE_TYPE (parm) = error_mark_node;
- }
- pushdecl (parm);
- }
- else
- {
- /* If we find an enum constant or a type tag,
- put it aside for the moment. */
- TREE_CHAIN (parm) = 0;
- others = chainon (others, parm);
- }
- }
-
- /* Get the decls in their original chain order
- and record in the function. */
- DECL_ARGUMENTS (fndecl) = getdecls ();
-
-#if 0
- /* If this function takes a variable number of arguments,
- add a phony parameter to the end of the parm list,
- to represent the position of the first unnamed argument. */
- if (TREE_VALUE (tree_last (TYPE_ARG_TYPES (TREE_TYPE (fndecl))))
- != void_type_node)
- {
- tree dummy = build_decl (PARM_DECL, NULL_TREE, void_type_node);
- /* Let's hope the address of the unnamed parm
- won't depend on its type. */
- TREE_TYPE (dummy) = integer_type_node;
- DECL_ARG_TYPE (dummy) = integer_type_node;
- DECL_ARGUMENTS (fndecl)
- = chainon (DECL_ARGUMENTS (fndecl), dummy);
- }
-#endif
-
- /* Now pushdecl the enum constants. */
- for (parm = others; parm; parm = next)
- {
- next = TREE_CHAIN (parm);
- if (DECL_NAME (parm) == 0)
- ;
- else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == void_type_node)
- ;
- else if (TREE_CODE (parm) != PARM_DECL)
- pushdecl (parm);
- }
-
- storetags (chainon (parmtags, gettags ()));
- }
- else
- {
- /* SPECPARMS is an identifier list--a chain of TREE_LIST nodes
- each with a parm name as the TREE_VALUE.
-
- PARMDECLS is a chain of declarations for parameters.
- Warning! It can also contain CONST_DECLs which are not parameters
- but are names of enumerators of any enum types
- declared among the parameters.
-
- First match each formal parameter name with its declaration.
- Associate decls with the names and store the decls
- into the TREE_PURPOSE slots. */
-
- for (parm = parmdecls; parm; parm = TREE_CHAIN (parm))
- DECL_RESULT (parm) = 0;
-
- for (parm = specparms; parm; parm = TREE_CHAIN (parm))
- {
- register tree tail, found = NULL;
-
- if (TREE_VALUE (parm) == 0)
- {
- error_with_decl (fndecl, "parameter name missing from parameter list");
- TREE_PURPOSE (parm) = 0;
- continue;
- }
-
- /* See if any of the parmdecls specifies this parm by name.
- Ignore any enumerator decls. */
- for (tail = parmdecls; tail; tail = TREE_CHAIN (tail))
- if (DECL_NAME (tail) == TREE_VALUE (parm)
- && TREE_CODE (tail) == PARM_DECL)
- {
- found = tail;
- break;
- }
-
- /* If declaration already marked, we have a duplicate name.
- Complain, and don't use this decl twice. */
- if (found && DECL_RESULT (found) != 0)
- {
- error_with_decl (found, "multiple parameters named `%s'");
- found = 0;
- }
-
- /* If the declaration says "void", complain and ignore it. */
- if (found && TYPE_MAIN_VARIANT (TREE_TYPE (found)) == void_type_node)
- {
- error_with_decl (found, "parameter `%s' declared void");
- TREE_TYPE (found) = integer_type_node;
- DECL_ARG_TYPE (found) = integer_type_node;
- layout_decl (found, 0);
- }
-
- /* Traditionally, a parm declared float is actually a double. */
- if (found && flag_traditional
- && TYPE_MAIN_VARIANT (TREE_TYPE (found)) == float_type_node)
- {
- TREE_TYPE (found) = double_type_node;
- DECL_ARG_TYPE (found) = double_type_node;
- layout_decl (found, 0);
- }
-
- /* If no declaration found, default to int. */
- if (!found)
- {
- found = build_decl (PARM_DECL, TREE_VALUE (parm),
- integer_type_node);
- DECL_ARG_TYPE (found) = TREE_TYPE (found);
- DECL_SOURCE_LINE (found) = DECL_SOURCE_LINE (fndecl);
- DECL_SOURCE_FILE (found) = DECL_SOURCE_FILE (fndecl);
- if (extra_warnings)
- warning_with_decl (found, "type of `%s' defaults to `int'");
- pushdecl (found);
- }
-
- TREE_PURPOSE (parm) = found;
-
- /* Mark this decl as "already found" -- see test, above.
- It is safe to use DECL_RESULT for this
- since it is not used in PARM_DECLs or CONST_DECLs. */
- DECL_RESULT (found) = error_mark_node;
- }
-
- /* Put anything which is on the parmdecls chain and which is
- not a PARM_DECL onto the list NONPARMS. (The types of
- non-parm things which might appear on the list include
- enumerators and NULL-named TYPE_DECL nodes.) Complain about
- any actual PARM_DECLs not matched with any names. */
-
- nonparms = 0;
- for (parm = parmdecls; parm; )
- {
- tree next = TREE_CHAIN (parm);
- TREE_CHAIN (parm) = 0;
-
- if (TREE_CODE (parm) != PARM_DECL)
- nonparms = chainon (nonparms, parm);
- else
- {
- /* Complain about args with incomplete types. */
- if (TYPE_SIZE (TREE_TYPE (parm)) == 0)
- {
- error_with_decl (parm, "parameter `%s' has incomplete type");
- TREE_TYPE (parm) = error_mark_node;
- }
-
- if (DECL_RESULT (parm) == 0)
- {
- error_with_decl (parm,
- "declaration for parameter `%s' but no such parameter");
- /* Pretend the parameter was not missing.
- This gets us to a standard state and minimizes
- further error messages. */
- specparms
- = chainon (specparms,
- tree_cons (parm, NULL_TREE, NULL_TREE));
- }
- }
-
- parm = next;
- }
-
- /* Chain the declarations together in the order of the list of names. */
- /* Store that chain in the function decl, replacing the list of names. */
- parm = specparms;
- DECL_ARGUMENTS (fndecl) = 0;
- {
- register tree last;
- for (last = 0; parm; parm = TREE_CHAIN (parm))
- if (TREE_PURPOSE (parm))
- {
- if (last == 0)
- DECL_ARGUMENTS (fndecl) = TREE_PURPOSE (parm);
- else
- TREE_CHAIN (last) = TREE_PURPOSE (parm);
- last = TREE_PURPOSE (parm);
- TREE_CHAIN (last) = 0;
- }
- }
-
- /* If there was a previous prototype,
- set the DECL_ARG_TYPE of each argument according to
- the type previously specified, and report any mismatches. */
-
- if (TYPE_ARG_TYPES (TREE_TYPE (fndecl)))
- {
- register tree type;
- for (parm = DECL_ARGUMENTS (fndecl),
- type = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
- parm || (type && (TYPE_MAIN_VARIANT (TREE_VALUE (type))
- != void_type_node));
- parm = TREE_CHAIN (parm), type = TREE_CHAIN (type))
- {
- if (parm == 0 || type == 0
- || TYPE_MAIN_VARIANT (TREE_VALUE (type)) == void_type_node)
- {
- error ("number of arguments doesn't match prototype");
- error_with_file_and_line (current_function_prototype_file,
- current_function_prototype_line,
- "prototype declaration");
- break;
- }
- /* Type for passing arg must be consistent
- with that declared for the arg. */
- if (! comptypes (DECL_ARG_TYPE (parm), TREE_VALUE (type)))
- {
- if (TYPE_MAIN_VARIANT (TREE_TYPE (parm))
- == TYPE_MAIN_VARIANT (TREE_VALUE (type)))
- {
- /* Adjust argument to match prototype. E.g. a previous
- `int foo(float);' prototype causes
- `int foo(x) float x; {...}' to be treated like
- `int foo(float x) {...}'. This is particularly
- useful for argument types like uid_t. */
- DECL_ARG_TYPE (parm) = TREE_TYPE (parm);
-#ifdef PROMOTE_PROTOTYPES
- if (TREE_CODE (TREE_TYPE (parm)) == INTEGER_TYPE
- && TYPE_PRECISION (TREE_TYPE (parm))
- < TYPE_PRECISION (integer_type_node))
- DECL_ARG_TYPE (parm) = integer_type_node;
-#endif
- if (pedantic)
- {
- pedwarn ("promoted argument `%s' doesn't match prototype",
- IDENTIFIER_POINTER (DECL_NAME (parm)));
- warning_with_file_and_line
- (current_function_prototype_file,
- current_function_prototype_line,
- "prototype declaration");
- }
- }
- /* If -traditional, allow `int' argument to match
- `unsigned' prototype. */
- else if (! (flag_traditional
- && TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == integer_type_node
- && TYPE_MAIN_VARIANT (TREE_VALUE (type)) == unsigned_type_node))
- {
- error ("argument `%s' doesn't match prototype",
- IDENTIFIER_POINTER (DECL_NAME (parm)));
- error_with_file_and_line (current_function_prototype_file,
- current_function_prototype_line,
- "prototype declaration");
- }
- }
- }
- TYPE_ACTUAL_ARG_TYPES (TREE_TYPE (fndecl)) = 0;
- }
-
- /* Otherwise, create a prototype that would match. */
-
- else
- {
- register tree actual, type;
- register tree last = 0;
-
- for (parm = DECL_ARGUMENTS (fndecl); parm; parm = TREE_CHAIN (parm))
- {
- type = perm_tree_cons (NULL_TREE, DECL_ARG_TYPE (parm),
- NULL_TREE);
- if (last)
- TREE_CHAIN (last) = type;
- else
- actual = type;
- last = type;
- }
- type = perm_tree_cons (NULL_TREE, void_type_node, NULL_TREE);
- if (last)
- TREE_CHAIN (last) = type;
- else
- actual = type;
-
- /* We are going to assign a new value for the TYPE_ACTUAL_ARG_TYPES
- of the type of this function, but we need to avoid having this
- affect the types of other similarly-typed functions, so we must
- first force the generation of an identical (but separate) type
- node for the relevant function type. The new node we create
- will be a variant of the main variant of the original function
- type. */
-
- TREE_TYPE (fndecl) = build_type_copy (TREE_TYPE (fndecl));
-
- TYPE_ACTUAL_ARG_TYPES (TREE_TYPE (fndecl)) = actual;
- }
-
- /* Now store the final chain of decls for the arguments
- as the decl-chain of the current lexical scope.
- Put the enumerators in as well, at the front so that
- DECL_ARGUMENTS is not modified. */
-
- storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
- }
-
- /* Make sure the binding level for the top of the function body
- gets a BLOCK if there are any in the function.
- Otherwise, the dbx output is wrong. */
-
- keep_next_if_subblocks = 1;
-
- /* ??? This might be an improvement,
- but needs to be thought about some more. */
-#if 0
- keep_next_level_flag = 1;
-#endif
-
- /* Write a record describing this function definition to the prototypes
- file (if requested). */
-
- gen_aux_info_record (fndecl, 1, 0, prototype);
-
- /* Initialize the RTL code for the function. */
-
- init_function_start (fndecl, input_filename, lineno);
-
- /* If this is a varargs function, inform function.c. */
-
- if (c_function_varargs)
- mark_varargs ();
-
- /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
-
- declare_function_name ();
-
- /* Set up parameters and prepare for return, for the function. */
-
- expand_function_start (fndecl, 0);
-
- /* If this function is `main', emit a call to `__main'
- to run global initializers, etc. */
- if (DECL_NAME (fndecl)
- && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main") == 0
- && DECL_CONTEXT (fndecl) == NULL_TREE)
- expand_main_function ();
-}
-
-/* SPECPARMS is an identifier list--a chain of TREE_LIST nodes
- each with a parm name as the TREE_VALUE. A null pointer as TREE_VALUE
- stands for an ellipsis in the identifier list.
-
- PARMLIST is the data returned by get_parm_info for the
- parmlist that follows the semicolon.
-
- We return a value of the same sort that get_parm_info returns,
- except that it describes the combination of identifiers and parmlist. */
-
-tree
-combine_parm_decls (specparms, parmlist, void_at_end)
- tree specparms, parmlist;
- int void_at_end;
-{
- register tree fndecl = current_function_decl;
- register tree parm;
-
- tree parmdecls = TREE_PURPOSE (parmlist);
-
- /* This is a chain of any other decls that came in among the parm
- declarations. They were separated already by get_parm_info,
- so we just need to keep them separate. */
- tree nonparms = TREE_VALUE (parmlist);
-
- tree types = 0;
-
- for (parm = parmdecls; parm; parm = TREE_CHAIN (parm))
- DECL_RESULT (parm) = 0;
-
- for (parm = specparms; parm; parm = TREE_CHAIN (parm))
- {
- register tree tail, found = NULL;
-
- /* See if any of the parmdecls specifies this parm by name. */
- for (tail = parmdecls; tail; tail = TREE_CHAIN (tail))
- if (DECL_NAME (tail) == TREE_VALUE (parm))
- {
- found = tail;
- break;
- }
-
- /* If declaration already marked, we have a duplicate name.
- Complain, and don't use this decl twice. */
- if (found && DECL_RESULT (found) != 0)
- {
- error_with_decl (found, "multiple parameters named `%s'");
- found = 0;
- }
-
- /* If the declaration says "void", complain and ignore it. */
- if (found && TYPE_MAIN_VARIANT (TREE_TYPE (found)) == void_type_node)
- {
- error_with_decl (found, "parameter `%s' declared void");
- TREE_TYPE (found) = integer_type_node;
- DECL_ARG_TYPE (found) = integer_type_node;
- layout_decl (found, 0);
- }
-
- /* Traditionally, a parm declared float is actually a double. */
- if (found && flag_traditional
- && TYPE_MAIN_VARIANT (TREE_TYPE (found)) == float_type_node)
- {
- TREE_TYPE (found) = double_type_node;
- DECL_ARG_TYPE (found) = double_type_node;
- layout_decl (found, 0);
- }
-
- /* If no declaration found, default to int. */
- if (!found)
- {
- found = build_decl (PARM_DECL, TREE_VALUE (parm),
- integer_type_node);
- DECL_ARG_TYPE (found) = TREE_TYPE (found);
- DECL_SOURCE_LINE (found) = DECL_SOURCE_LINE (fndecl);
- DECL_SOURCE_FILE (found) = DECL_SOURCE_FILE (fndecl);
- error_with_decl (found, "type of parameter `%s' is not declared");
- pushdecl (found);
- }
-
- TREE_PURPOSE (parm) = found;
-
- /* Mark this decl as "already found" -- see test, above.
- It is safe to use DECL_RESULT for this
- since it is not used in PARM_DECLs or CONST_DECLs. */
- DECL_RESULT (found) = error_mark_node;
- }
-
- /* Complain about any actual PARM_DECLs not matched with any names. */
-
- for (parm = parmdecls; parm; )
- {
- tree next = TREE_CHAIN (parm);
- TREE_CHAIN (parm) = 0;
-
- /* Complain about args with incomplete types. */
- if (TYPE_SIZE (TREE_TYPE (parm)) == 0)
- {
- error_with_decl (parm, "parameter `%s' has incomplete type");
- TREE_TYPE (parm) = error_mark_node;
- }
-
- if (DECL_RESULT (parm) == 0)
- {
- error_with_decl (parm,
- "declaration for parameter `%s' but no such parameter");
- /* Pretend the parameter was not missing.
- This gets us to a standard state and minimizes
- further error messages. */
- specparms
- = chainon (specparms,
- tree_cons (parm, NULL_TREE, NULL_TREE));
- }
-
- parm = next;
- }
-
- /* Chain the declarations together in the order of the list of names.
- At the same time, build up a list of their types, in reverse order. */
-
- parm = specparms;
- parmdecls = 0;
- {
- register tree last;
- for (last = 0; parm; parm = TREE_CHAIN (parm))
- if (TREE_PURPOSE (parm))
- {
- if (last == 0)
- parmdecls = TREE_PURPOSE (parm);
- else
- TREE_CHAIN (last) = TREE_PURPOSE (parm);
- last = TREE_PURPOSE (parm);
- TREE_CHAIN (last) = 0;
-
- types = saveable_tree_cons (NULL_TREE, TREE_TYPE (parm), types);
- }
- }
-
- if (void_at_end)
- return saveable_tree_cons (parmdecls, nonparms,
- nreverse (saveable_tree_cons (NULL_TREE, void_type_node, types)));
-
- return saveable_tree_cons (parmdecls, nonparms, nreverse (types));
-}
-
-/* Finish up a function declaration and compile that function
- all the way to assembler language output. The free the storage
- for the function definition.
-
- This is called after parsing the body of the function definition.
-
- NESTED is nonzero if the function being finished is nested in another. */
-
-void
-finish_function (nested)
- int nested;
-{
- register tree fndecl = current_function_decl;
-
-/* TREE_READONLY (fndecl) = 1;
- This caused &foo to be of type ptr-to-const-function
- which then got a warning when stored in a ptr-to-function variable. */
-
- poplevel (1, 0, 1);
- BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
-
- /* Must mark the RESULT_DECL as being in this function. */
-
- DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
-
- /* Obey `register' declarations if `setjmp' is called in this fn. */
- if (flag_traditional && current_function_calls_setjmp)
- {
- setjmp_protect (DECL_INITIAL (fndecl));
- setjmp_protect_args ();
- }
-
-#ifdef DEFAULT_MAIN_RETURN
- if (! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main"))
- {
- if (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (fndecl)))
- != integer_type_node)
- warning_with_decl (fndecl, "return type of `%s' is not `int'");
- else
- {
- /* Make it so that `main' always returns success by default. */
- DEFAULT_MAIN_RETURN;
- }
- }
-#endif
-
- /* Generate rtl for function exit. */
- expand_function_end (input_filename, lineno);
-
- /* So we can tell if jump_optimize sets it to 1. */
- can_reach_end = 0;
-
- /* Run the optimizers and output the assembler code for this function. */
- rest_of_compilation (fndecl);
-
- current_function_returns_null |= can_reach_end;
-
- if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null)
- warning ("`volatile' function does return");
- else if (warn_return_type && can_reach_end
- && TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (fndecl))) != void_type_node)
- /* If this function returns non-void and control can drop through,
- complain. */
- warning ("control reaches end of non-void function");
- /* With just -W, complain only if function returns both with
- and without a value. */
- else if (extra_warnings
- && current_function_returns_value && current_function_returns_null)
- warning ("this function may return with or without a value");
-
- /* Free all the tree nodes making up this function. */
- /* Switch back to allocating nodes permanently
- until we start another function. */
- if (! nested)
- permanent_allocation ();
-
- if (DECL_SAVED_INSNS (fndecl) == 0 && ! nested)
- {
- /* Stop pointing to the local nodes about to be freed. */
- /* But DECL_INITIAL must remain nonzero so we know this
- was an actual function definition. */
- /* For a nested function, this is done in pop_c_function_context. */
- DECL_INITIAL (fndecl) = error_mark_node;
- DECL_ARGUMENTS (fndecl) = 0;
- }
-
- if (! nested)
- {
- /* Let the error reporting routines know that we're outside a
- function. For a nested function, this value is used in
- pop_c_function_context and then reset via pop_function_context. */
- current_function_decl = NULL;
- }
-}
-
-/* Save and restore the variables in this file and elsewhere
- that keep track of the progress of compilation of the current function.
- Used for nested functions. */
-
-struct c_function
-{
- struct c_function *next;
- tree enum_next_value;
- tree named_labels;
- tree shadowed_labels;
- int returns_value;
- int returns_null;
- int warn_about_return_type;
- int extern_inline;
- struct binding_level *binding_level;
-};
-
-struct c_function *c_function_chain;
-
-/* Save and reinitialize the variables
- used during compilation of a C function. */
-
-void
-push_c_function_context ()
-{
- struct c_function *p
- = (struct c_function *) xmalloc (sizeof (struct c_function));
-
- if (pedantic)
- pedwarn ("ANSI C forbids nested functions");
-
- push_function_context ();
-
- p->next = c_function_chain;
- c_function_chain = p;
-
- p->enum_next_value = enum_next_value;
- p->named_labels = named_labels;
- p->shadowed_labels = shadowed_labels;
- p->returns_value = current_function_returns_value;
- p->returns_null = current_function_returns_null;
- p->warn_about_return_type = warn_about_return_type;
- p->extern_inline = current_extern_inline;
- p->binding_level = current_binding_level;
-}
-
-/* Restore the variables used during compilation of a C function. */
-
-void
-pop_c_function_context ()
-{
- struct c_function *p = c_function_chain;
- tree link;
-
- /* Bring back all the labels that were shadowed. */
- for (link = shadowed_labels; link; link = TREE_CHAIN (link))
- if (DECL_NAME (TREE_VALUE (link)) != 0)
- IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)))
- = TREE_VALUE (link);
-
- if (DECL_SAVED_INSNS (current_function_decl) == 0)
- {
- /* Stop pointing to the local nodes about to be freed. */
- /* But DECL_INITIAL must remain nonzero so we know this
- was an actual function definition. */
- DECL_INITIAL (current_function_decl) = error_mark_node;
- DECL_ARGUMENTS (current_function_decl) = 0;
- }
-
- pop_function_context ();
-
- c_function_chain = p->next;
-
- enum_next_value = p->enum_next_value;
- named_labels = p->named_labels;
- shadowed_labels = p->shadowed_labels;
- current_function_returns_value = p->returns_value;
- current_function_returns_null = p->returns_null;
- warn_about_return_type = p->warn_about_return_type;
- current_extern_inline = p->extern_inline;
- current_binding_level = p->binding_level;
-
- free (p);
-}
diff --git a/gnu/gcc2/cc1/c-iterate.c b/gnu/gcc2/cc1/c-iterate.c
deleted file mode 100644
index 09df3e466336..000000000000
--- a/gnu/gcc2/cc1/c-iterate.c
+++ /dev/null
@@ -1,594 +0,0 @@
-/* Build expressions with type checking for C compiler.
- Copyright (C) 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-/* This file is part of the C front end.
- It is responsible for implementing iterators,
- both their declarations and the expansion of statements using them. */
-
-#include "config.h"
-#include <stdio.h>
-#include "tree.h"
-#include "c-tree.h"
-#include "flags.h"
-#include "obstack.h"
-#include "rtl.h"
-
-static void expand_stmt_with_iterators_1 ();
-static tree collect_iterators ();
-static void iterator_loop_prologue ();
-static void iterator_loop_epilogue ();
-static void add_ixpansion ();
-static void delete_ixpansion();
-static int top_level_ixpansion_p ();
-static void istack_sublevel_to_current ();
-
-/* A special obstack, and a pointer to the start of
- all the data in it (so we can free everything easily). */
-static struct obstack ixp_obstack;
-static char *ixp_firstobj;
-
-/*
- KEEPING TRACK OF EXPANSIONS
-
- In order to clean out expansions corresponding to statements inside
- "{(...)}" constructs we have to keep track of all expansions. The
- cleanup is needed when an automatic, or implicit, expansion on
- iterator, say X, happens to a statement which contains a {(...)}
- form with a statement already expanded on X. In this case we have
- to go back and cleanup the inner expansion. This can be further
- complicated by the fact that {(...)} can be nested.
-
- To make this cleanup possible, we keep lists of all expansions, and
- to make it work for nested constructs, we keep a stack. The list at
- the top of the stack (ITER_STACK.CURRENT_LEVEL) corresponds to the
- currently parsed level. All expansions of the levels below the
- current one are kept in one list whose head is pointed to by
- ITER_STACK.SUBLEVEL_FIRST (SUBLEVEL_LAST is there for making merges
- easy). The process works as follows:
-
- -- On "({" a new node is added to the stack by PUSH_ITERATOR_STACK.
- The sublevel list is not changed at this point.
-
- -- On "})" the list for the current level is appended to the sublevel
- list.
-
- -- On ";" sublevel lists are appended to the current level lists.
- The reason is this: if they have not been superseded by the
- expansion at the current level, they still might be
- superseded later by the expansion on the higher level.
- The levels do not have to distinguish levels below, so we
- can merge the lists together. */
-
-struct ixpansion
-{
- tree ixdecl; /* Iterator decl */
- rtx ixprologue_start; /* First insn of epilogue. NULL means */
- /* explicit (FOR) expansion*/
- rtx ixprologue_end;
- rtx ixepilogue_start;
- rtx ixepilogue_end;
- struct ixpansion *next; /* Next in the list */
-};
-
-struct iter_stack_node
-{
- struct ixpansion *first; /* Head of list of ixpansions */
- struct ixpansion *last; /* Last node in list of ixpansions */
- struct iter_stack_node *next; /* Next level iterator stack node */
-};
-
-struct iter_stack_node *iter_stack;
-
-struct iter_stack_node sublevel_ixpansions;
-
-/* During collect_iterators, a list of SAVE_EXPRs already scanned. */
-static tree save_exprs;
-
-/* Initialize our obstack once per compilation. */
-
-void
-init_iterators ()
-{
- gcc_obstack_init (&ixp_obstack);
- ixp_firstobj = (char *) obstack_alloc (&ixp_obstack, 0);
-}
-
-/* Handle the start of an explicit `for' loop for iterator IDECL. */
-
-void
-iterator_for_loop_start (idecl)
- tree idecl;
-{
- ITERATOR_BOUND_P (idecl) = 1;
- add_ixpansion (idecl, 0, 0, 0, 0);
- iterator_loop_prologue (idecl, 0, 0);
-}
-
-/* Handle the end of an explicit `for' loop for iterator IDECL. */
-
-void
-iterator_for_loop_end (idecl)
- tree idecl;
-{
- iterator_loop_epilogue (idecl, 0, 0);
- ITERATOR_BOUND_P (idecl) = 0;
-}
-
-/*
- ITERATOR RTL EXPANSIONS
-
- Expanding simple statements with iterators is straightforward:
- collect the list of all free iterators in the statement, and
- generate a loop for each of them.
-
- An iterator is "free" if it has not been "bound" by a FOR
- operator. The DECL_RTL of the iterator is the loop counter. */
-
-/* Expand a statement STMT, possibly containing iterator usage, into RTL. */
-
-void
-iterator_expand (stmt)
- tree stmt;
-{
- tree iter_list;
- save_exprs = NULL_TREE;
- iter_list = collect_iterators (stmt, NULL_TREE);
- expand_stmt_with_iterators_1 (stmt, iter_list);
- istack_sublevel_to_current ();
-}
-
-
-static void
-expand_stmt_with_iterators_1 (stmt, iter_list)
- tree stmt, iter_list;
-{
- if (iter_list == 0)
- expand_expr_stmt (stmt);
- else
- {
- tree current_iterator = TREE_VALUE (iter_list);
- tree iter_list_tail = TREE_CHAIN (iter_list);
- rtx p_start, p_end, e_start, e_end;
-
- iterator_loop_prologue (current_iterator, &p_start, &p_end);
- expand_stmt_with_iterators_1 (stmt, iter_list_tail);
- iterator_loop_epilogue (current_iterator, &e_start, &e_end);
-
- /** Delete all inner expansions based on current_iterator **/
- /** before adding the outer one. **/
-
- delete_ixpansion (current_iterator);
- add_ixpansion (current_iterator, p_start, p_end, e_start, e_end);
- }
-}
-
-
-/* Return a list containing all the free (i.e. not bound by a
- containing `for' statement) iterators mentioned in EXP, plus those
- in LIST. Do not add duplicate entries to the list. */
-
-static tree
-collect_iterators (exp, list)
- tree exp, list;
-{
- if (exp == 0) return list;
-
- switch (TREE_CODE (exp))
- {
- case VAR_DECL:
- if (! ITERATOR_P (exp) || ITERATOR_BOUND_P (exp))
- return list;
- if (value_member (exp, list))
- return list;
- return tree_cons (NULL_TREE, exp, list);
-
- case TREE_LIST:
- {
- tree tail;
- for (tail = exp; tail; tail = TREE_CHAIN (tail))
- list = collect_iterators (TREE_VALUE (tail), list);
- return list;
- }
-
- case SAVE_EXPR:
- /* In each scan, scan a given save_expr only once. */
- {
- tree tail;
- for (tail = save_exprs; tail; tail = TREE_CHAIN (tail))
- if (TREE_VALUE (tail) == exp)
- return list;
- }
- save_exprs = tree_cons (NULL_TREE, exp, save_exprs);
- return collect_iterators (TREE_OPERAND (exp, 0), list);
-
- /* we do not automatically iterate blocks -- one must */
- /* use the FOR construct to do that */
-
- case BLOCK:
- return list;
-
- default:
- switch (TREE_CODE_CLASS (TREE_CODE (exp)))
- {
- case '1':
- return collect_iterators (TREE_OPERAND (exp, 0), list);
-
- case '2':
- case '<':
- return collect_iterators (TREE_OPERAND (exp, 0),
- collect_iterators (TREE_OPERAND (exp, 1),
- list));
-
- case 'e':
- case 'r':
- {
- int num_args = tree_code_length[(int) TREE_CODE (exp)];
- int i;
-
- /* Some tree codes have RTL, not trees, as operands. */
- switch (TREE_CODE (exp))
- {
- case CALL_EXPR:
- num_args = 2;
- break;
- case METHOD_CALL_EXPR:
- num_args = 3;
- break;
- case WITH_CLEANUP_EXPR:
- num_args = 1;
- break;
- case RTL_EXPR:
- return list;
- }
-
- for (i = 0; i < num_args; i++)
- list = collect_iterators (TREE_OPERAND (exp, i), list);
- return list;
- }
- default:
- return list;
- }
- }
-}
-
-/* Emit rtl for the start of a loop for iterator IDECL.
-
- If necessary, create loop counter rtx and store it as DECL_RTL of IDECL.
-
- The prologue normally starts and ends with notes, which are returned
- by this function in *START_NOTE and *END_NODE.
- If START_NOTE and END_NODE are 0, we don't make those notes. */
-
-static void
-iterator_loop_prologue (idecl, start_note, end_note)
- tree idecl;
- rtx *start_note, *end_note;
-{
- /* Force the save_expr in DECL_INITIAL to be calculated
- if it hasn't been calculated yet. */
- expand_expr (DECL_INITIAL (idecl), 0, VOIDmode, 0);
-
- if (DECL_RTL (idecl) == 0)
- expand_decl (idecl);
-
- if (start_note)
- *start_note = emit_note (0, NOTE_INSN_DELETED);
- /* Initialize counter. */
- expand_expr (build (MODIFY_EXPR, TREE_TYPE (idecl),
- idecl, integer_zero_node),
- 0, VOIDmode, 0);
-
- expand_start_loop_continue_elsewhere (1);
-
- ITERATOR_BOUND_P (idecl) = 1;
-
- if (end_note)
- *end_note = emit_note (0, NOTE_INSN_DELETED);
-}
-
-/* Similar to the previous function, but for the end of the loop.
-
- DECL_RTL is zeroed unless we are inside "({...})". The reason for that is
- described below.
-
- When we create two (or more) loops based on the same IDECL, and
- both inside the same "({...})" construct, we must be prepared to
- delete both of the loops and create a single one on the level
- above, i.e. enclosing the "({...})". The new loop has to use the
- same counter rtl because the references to the iterator decl
- (IDECL) have already been expanded as references to the counter
- rtl.
-
- It is incorrect to use the same counter reg in different functions,
- and it is desirable to use different counters in disjoint loops
- when we know there's no need to combine them (because then they can
- get allocated separately). */
-
-static void
-iterator_loop_epilogue (idecl, start_note, end_note)
- tree idecl;
- rtx *start_note, *end_note;
-{
- tree test, incr;
-
- if (start_note)
- *start_note = emit_note (0, NOTE_INSN_DELETED);
- expand_loop_continue_here ();
- incr = build_binary_op (PLUS_EXPR, idecl, integer_one_node, 0);
- expand_expr (build (MODIFY_EXPR, TREE_TYPE (idecl), idecl, incr),
- 0, VOIDmode, 0);
- test = build_binary_op (LT_EXPR, idecl, DECL_INITIAL (idecl), 0);
- expand_exit_loop_if_false (0, test);
- expand_end_loop ();
-
- ITERATOR_BOUND_P (idecl) = 0;
- /* we can reset rtl since there is not chance that this expansion */
- /* would be superceded by a higher level one */
- if (top_level_ixpansion_p ())
- DECL_RTL (idecl) = 0;
- if (end_note)
- *end_note = emit_note (0, NOTE_INSN_DELETED);
-}
-
-/* Return true if we are not currently inside a "({...})" construct. */
-
-static int
-top_level_ixpansion_p ()
-{
- return iter_stack == 0;
-}
-
-/* Given two chains of iter_stack_nodes,
- append the nodes in X into Y. */
-
-static void
-isn_append (x, y)
- struct iter_stack_node *x, *y;
-{
- if (x->first == 0)
- return;
-
- if (y->first == 0)
- {
- y->first = x->first;
- y->last = x->last;
- }
- else
- {
- y->last->next = x->first;
- y->last = x->last;
- }
-}
-
-/** Make X empty **/
-
-#define ISN_ZERO(X) (X).first=(X).last=0
-
-/* Move the ixpansions in sublevel_ixpansions into the current
- node on the iter_stack, or discard them if the iter_stack is empty.
- We do this at the end of a statement. */
-
-static void
-istack_sublevel_to_current ()
-{
- /* At the top level we can throw away sublevel's expansions **/
- /* because there is nobody above us to ask for a cleanup **/
- if (iter_stack != 0)
- /** Merging with empty sublevel list is a no-op **/
- if (sublevel_ixpansions.last)
- isn_append (&sublevel_ixpansions, iter_stack);
-
- if (iter_stack == 0)
- obstack_free (&ixp_obstack, ixp_firstobj);
-
- ISN_ZERO (sublevel_ixpansions);
-}
-
-/* Push a new node on the iter_stack, when we enter a ({...}). */
-
-void
-push_iterator_stack ()
-{
- struct iter_stack_node *new_top
- = (struct iter_stack_node*)
- obstack_alloc (&ixp_obstack, sizeof (struct iter_stack_node));
-
- new_top->first = 0;
- new_top->last = 0;
- new_top->next = iter_stack;
- iter_stack = new_top;
-}
-
-/* Pop iter_stack, moving the ixpansions in the node being popped
- into sublevel_ixpansions. */
-
-void
-pop_iterator_stack ()
-{
- if (iter_stack == 0)
- abort ();
-
- isn_append (iter_stack, &sublevel_ixpansions);
- /** Pop current level node: */
- iter_stack = iter_stack->next;
-}
-
-
-/* Record an iterator expansion ("ixpansion") for IDECL.
- The remaining paramters are the notes in the loop entry
- and exit rtl. */
-
-static void
-add_ixpansion (idecl, pro_start, pro_end, epi_start, epi_end)
- tree idecl;
- rtx pro_start, pro_end, epi_start, epi_end;
-{
- struct ixpansion* newix;
-
- /* Do nothing if we are not inside "({...})",
- as in that case this expansion can't need subsequent RTL modification. */
- if (iter_stack == 0)
- return;
-
- newix = (struct ixpansion*) obstack_alloc (&ixp_obstack,
- sizeof (struct ixpansion));
- newix->ixdecl = idecl;
- newix->ixprologue_start = pro_start;
- newix->ixprologue_end = pro_end;
- newix->ixepilogue_start = epi_start;
- newix->ixepilogue_end = epi_end;
-
- newix->next = iter_stack->first;
- iter_stack->first = newix;
- if (iter_stack->last == 0)
- iter_stack->last = newix;
-}
-
-/* Delete the RTL for all ixpansions for iterator IDECL
- in our sublevels. We do this when we make a larger
- containing expansion for IDECL. */
-
-static void
-delete_ixpansion (idecl)
- tree idecl;
-{
- struct ixpansion* previx = 0, *ix;
-
- for (ix = sublevel_ixpansions.first; ix; ix = ix->next)
- if (ix->ixdecl == idecl)
- {
- /** zero means that this is a mark for FOR -- **/
- /** we do not delete anything, just issue an error. **/
-
- if (ix->ixprologue_start == 0)
- error_with_decl (idecl,
- "`for (%s)' appears within implicit iteration");
- else
- {
- rtx insn;
- /* We delete all insns, including notes because leaving loop */
- /* notes and barriers produced by iterator expansion would */
- /* be misleading to other phases */
-
- for (insn = NEXT_INSN (ix->ixprologue_start);
- insn != ix->ixprologue_end;
- insn = NEXT_INSN (insn))
- delete_insn (insn);
- for (insn = NEXT_INSN (ix->ixepilogue_start);
- insn != ix->ixepilogue_end;
- insn = NEXT_INSN (insn))
- delete_insn (insn);
- }
-
- /* Delete this ixpansion from sublevel_ixpansions. */
- if (previx)
- previx->next = ix->next;
- else
- sublevel_ixpansions.first = ix->next;
- if (sublevel_ixpansions.last == ix)
- sublevel_ixpansions.last = previx;
- }
- else
- previx = ix;
-}
-
-#ifdef DEBUG_ITERATORS
-
-/* The functions below are for use from source level debugger.
- They print short forms of iterator lists and the iterator stack. */
-
-/* Print the name of the iterator D. */
-
-void
-prdecl (d)
- tree d;
-{
- if (d)
- {
- if (TREE_CODE (d) == VAR_DECL)
- {
- tree tname = DECL_NAME (d);
- char *dname = IDENTIFIER_POINTER (tname);
- fprintf (stderr, dname);
- }
- else
- fprintf (stderr, "<<Not a Decl!!!>>");
- }
- else
- fprintf (stderr, "<<NULL!!>>");
-}
-
-/* Print Iterator List -- names only */
-
-tree
-pil (head)
- tree head;
-{
- tree current, next;
- for (current = head; current; current = next)
- {
- tree node = TREE_VALUE (current);
- prdecl (node);
- next = TREE_CHAIN (current);
- if (next) fprintf (stderr, ",");
- }
- fprintf (stderr, "\n");
-}
-
-/* Print IXpansion List */
-
-struct ixpansion *
-pixl (head)
- struct ixpansion *head;
-{
- struct ixpansion *current, *next;
- fprintf (stderr, "> ");
- if (head == 0)
- fprintf (stderr, "(empty)");
-
- for (current=head; current; current = next)
- {
- tree node = current->ixdecl;
- prdecl (node);
- next = current->next;
- if (next)
- fprintf (stderr, ",");
- }
- fprintf (stderr, "\n");
- return head;
-}
-
-/* Print Iterator Stack*/
-
-void
-pis ()
-{
- struct iter_stack_node *stack_node;
-
- fprintf (stderr, "--SubLevel: ");
- pixl (sublevel_ixpansions.first);
- fprintf (stderr, "--Stack:--\n");
- for (stack_node = iter_stack;
- stack_node;
- stack_node = stack_node->next)
- pixl (stack_node->first);
-}
-
-#endif /* DEBUG_ITERATORS */
diff --git a/gnu/gcc2/cc1/c-lang.c b/gnu/gcc2/cc1/c-lang.c
deleted file mode 100644
index 8b46b3c10cb5..000000000000
--- a/gnu/gcc2/cc1/c-lang.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/* Language-specific hook definitions for C front end.
- Copyright (C) 1991 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-#include "config.h"
-#include "tree.h"
-#include <stdio.h>
-#include "input.h"
-
-/* Each of the functions defined here
- is an alternative to a function in objc-actions.c. */
-
-int
-lang_decode_option (p)
- char *p;
-{
- return c_decode_option (p);
-}
-
-void
-lang_init ()
-{
- /* the beginning of the file is a new line; check for # */
- /* With luck, we discover the real source file's name from that
- and put it in input_filename. */
- ungetc (check_newline (), finput);
-}
-
-void
-lang_finish ()
-{
-}
-
-char *
-lang_identify ()
-{
- return "c";
-}
-
-void
-print_lang_statistics ()
-{
-}
-
-/* Used by c-lex.c, but only for objc. */
-
-tree
-lookup_interface (arg)
- tree arg;
-{
- return 0;
-}
-
-tree
-is_class_name (arg)
- tree arg;
-{
- return 0;
-}
-
-void
-maybe_objc_check_decl (decl)
- tree decl;
-{
-}
-
-int
-maybe_objc_comptypes (lhs, rhs, reflexive)
- tree lhs, rhs;
- int reflexive;
-{
- return -1;
-}
-
-tree
-maybe_objc_method_name (decl)
- tree decl;
-{
- return 0;
-}
-
-tree
-maybe_building_objc_message_expr ()
-{
- return 0;
-}
-
-int
-recognize_objc_keyword ()
-{
- return 0;
-}
-
-tree
-build_objc_string (len, str)
- int len;
- char *str;
-{
- abort ();
- return NULL_TREE;
-}
-
-void
-GNU_xref_begin ()
-{
- fatal ("GCC does not yet support XREF");
-}
-
-void
-GNU_xref_end ()
-{
- fatal ("GCC does not yet support XREF");
-}
diff --git a/gnu/gcc2/cc1/c-lex.c b/gnu/gcc2/cc1/c-lex.c
deleted file mode 100644
index d83b5dccb623..000000000000
--- a/gnu/gcc2/cc1/c-lex.c
+++ /dev/null
@@ -1,2111 +0,0 @@
-/* Lexical analyzer for C and Objective C.
- Copyright (C) 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-#include <stdio.h>
-#include <errno.h>
-#include <setjmp.h>
-
-#include "config.h"
-#include "rtl.h"
-#include "tree.h"
-#include "input.h"
-#include "c-lex.h"
-#include "c-tree.h"
-#include "flags.h"
-#include "c-parse.h"
-
-#ifdef MULTIBYTE_CHARS
-#include <stdlib.h>
-#include <locale.h>
-#endif
-
-#ifndef errno
-extern int errno;
-#endif
-
-/* The elements of `ridpointers' are identifier nodes
- for the reserved type names and storage classes.
- It is indexed by a RID_... value. */
-tree ridpointers[(int) RID_MAX];
-
-/* Cause the `yydebug' variable to be defined. */
-#define YYDEBUG 1
-
-/* the declaration found for the last IDENTIFIER token read in.
- yylex must look this up to detect typedefs, which get token type TYPENAME,
- so it is left around in case the identifier is not a typedef but is
- used in a context which makes it a reference to a variable. */
-tree lastiddecl;
-
-/* Nonzero enables objc features. */
-
-int doing_objc_thang;
-
-extern tree is_class_name ();
-
-extern int yydebug;
-
-/* File used for outputting assembler code. */
-extern FILE *asm_out_file;
-
-#ifndef WCHAR_TYPE_SIZE
-#ifdef INT_TYPE_SIZE
-#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
-#else
-#define WCHAR_TYPE_SIZE BITS_PER_WORD
-#endif
-#endif
-
-/* Number of bytes in a wide character. */
-#define WCHAR_BYTES (WCHAR_TYPE_SIZE / BITS_PER_UNIT)
-
-static int maxtoken; /* Current nominal length of token buffer. */
-char *token_buffer; /* Pointer to token buffer.
- Actual allocated length is maxtoken + 2.
- This is not static because objc-parse.y uses it. */
-
-/* Nonzero if end-of-file has been seen on input. */
-static int end_of_file;
-
-/* Buffered-back input character; faster than using ungetc. */
-static int nextchar = -1;
-
-int check_newline ();
-
-/* Nonzero tells yylex to ignore \ in string constants. */
-static int ignore_escape_flag = 0;
-
-/* C code produced by gperf version 2.5 (GNU C++ version) */
-/* Command-line: gperf -p -j1 -i 1 -g -o -t -G -N is_reserved_word -k1,3,$ c-parse.gperf */
-struct resword { char *name; short token; enum rid rid; };
-
-#define TOTAL_KEYWORDS 79
-#define MIN_WORD_LENGTH 2
-#define MAX_WORD_LENGTH 20
-#define MIN_HASH_VALUE 10
-#define MAX_HASH_VALUE 144
-/* maximum key range = 135, duplicates = 0 */
-
-#ifdef __GNUC__
-__inline
-#endif
-static unsigned int
-hash (str, len)
- register char *str;
- register int unsigned len;
-{
- static unsigned char asso_values[] =
- {
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 25, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
- 145, 145, 145, 145, 145, 1, 145, 46, 8, 15,
- 61, 6, 36, 48, 3, 5, 145, 18, 63, 25,
- 29, 76, 1, 145, 13, 2, 1, 51, 37, 9,
- 9, 1, 3, 145, 145, 145, 145, 145,
- };
- register int hval = len;
-
- switch (hval)
- {
- default:
- case 3:
- hval += asso_values[str[2]];
- case 2:
- case 1:
- hval += asso_values[str[0]];
- }
- return hval + asso_values[str[len - 1]];
-}
-
-static struct resword wordlist[] =
-{
- {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
- {"",},
- {"int", TYPESPEC, RID_INT},
- {"",}, {"",},
- {"__typeof__", TYPEOF, NORID},
- {"__signed__", TYPESPEC, RID_SIGNED},
- {"__imag__", IMAGPART, NORID},
- {"switch", SWITCH, NORID},
- {"__inline__", SCSPEC, RID_INLINE},
- {"else", ELSE, NORID},
- {"__iterator__", SCSPEC, RID_ITERATOR},
- {"__inline", SCSPEC, RID_INLINE},
- {"__extension__", EXTENSION, NORID},
- {"struct", STRUCT, NORID},
- {"__real__", REALPART, NORID},
- {"__const", TYPE_QUAL, RID_CONST},
- {"while", WHILE, NORID},
- {"__const__", TYPE_QUAL, RID_CONST},
- {"case", CASE, NORID},
- {"__complex__", TYPESPEC, RID_COMPLEX},
- {"__iterator", SCSPEC, RID_ITERATOR},
- {"bycopy", TYPE_QUAL, RID_BYCOPY},
- {"",}, {"",}, {"",},
- {"__complex", TYPESPEC, RID_COMPLEX},
- {"",},
- {"in", TYPE_QUAL, RID_IN},
- {"break", BREAK, NORID},
- {"@defs", DEFS, NORID},
- {"",}, {"",}, {"",},
- {"extern", SCSPEC, RID_EXTERN},
- {"if", IF, NORID},
- {"typeof", TYPEOF, NORID},
- {"typedef", SCSPEC, RID_TYPEDEF},
- {"__typeof", TYPEOF, NORID},
- {"sizeof", SIZEOF, NORID},
- {"",},
- {"return", RETURN, NORID},
- {"const", TYPE_QUAL, RID_CONST},
- {"__volatile__", TYPE_QUAL, RID_VOLATILE},
- {"@private", PRIVATE, NORID},
- {"@selector", SELECTOR, NORID},
- {"__volatile", TYPE_QUAL, RID_VOLATILE},
- {"__asm__", ASM_KEYWORD, NORID},
- {"",}, {"",},
- {"continue", CONTINUE, NORID},
- {"__alignof__", ALIGNOF, NORID},
- {"__imag", IMAGPART, NORID},
- {"__attribute__", ATTRIBUTE, NORID},
- {"",}, {"",},
- {"__attribute", ATTRIBUTE, NORID},
- {"for", FOR, NORID},
- {"",},
- {"@encode", ENCODE, NORID},
- {"id", OBJECTNAME, RID_ID},
- {"static", SCSPEC, RID_STATIC},
- {"@interface", INTERFACE, NORID},
- {"",},
- {"__signed", TYPESPEC, RID_SIGNED},
- {"",},
- {"__label__", LABEL, NORID},
- {"",}, {"",},
- {"__asm", ASM_KEYWORD, NORID},
- {"char", TYPESPEC, RID_CHAR},
- {"",},
- {"inline", SCSPEC, RID_INLINE},
- {"out", TYPE_QUAL, RID_OUT},
- {"register", SCSPEC, RID_REGISTER},
- {"__real", REALPART, NORID},
- {"short", TYPESPEC, RID_SHORT},
- {"",},
- {"enum", ENUM, NORID},
- {"inout", TYPE_QUAL, RID_INOUT},
- {"",},
- {"oneway", TYPE_QUAL, RID_ONEWAY},
- {"union", UNION, NORID},
- {"",},
- {"__alignof", ALIGNOF, NORID},
- {"",},
- {"@implementation", IMPLEMENTATION, NORID},
- {"",},
- {"@class", CLASS, NORID},
- {"",},
- {"@public", PUBLIC, NORID},
- {"asm", ASM_KEYWORD, NORID},
- {"",}, {"",}, {"",}, {"",}, {"",},
- {"default", DEFAULT, NORID},
- {"",},
- {"void", TYPESPEC, RID_VOID},
- {"",},
- {"@protected", PROTECTED, NORID},
- {"@protocol", PROTOCOL, NORID},
- {"",}, {"",}, {"",},
- {"volatile", TYPE_QUAL, RID_VOLATILE},
- {"",}, {"",},
- {"signed", TYPESPEC, RID_SIGNED},
- {"float", TYPESPEC, RID_FLOAT},
- {"@end", END, NORID},
- {"",}, {"",},
- {"unsigned", TYPESPEC, RID_UNSIGNED},
- {"@compatibility_alias", ALIAS, NORID},
- {"double", TYPESPEC, RID_DOUBLE},
- {"",}, {"",},
- {"auto", SCSPEC, RID_AUTO},
- {"",},
- {"goto", GOTO, NORID},
- {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
- {"do", DO, NORID},
- {"",}, {"",}, {"",}, {"",},
- {"long", TYPESPEC, RID_LONG},
-};
-
-#ifdef __GNUC__
-__inline
-#endif
-struct resword *
-is_reserved_word (str, len)
- register char *str;
- register unsigned int len;
-{
- if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
- {
- register int key = hash (str, len);
-
- if (key <= MAX_HASH_VALUE && key >= 0)
- {
- register char *s = wordlist[key].name;
-
- if (*s == *str && !strcmp (str + 1, s + 1))
- return &wordlist[key];
- }
- }
- return 0;
-}
-
-/* Return something to represent absolute declarators containing a *.
- TARGET is the absolute declarator that the * contains.
- TYPE_QUALS is a list of modifiers such as const or volatile
- to apply to the pointer type, represented as identifiers.
-
- We return an INDIRECT_REF whose "contents" are TARGET
- and whose type is the modifier list. */
-
-tree
-make_pointer_declarator (type_quals, target)
- tree type_quals, target;
-{
- return build1 (INDIRECT_REF, type_quals, target);
-}
-
-void
-forget_protocol_qualifiers ()
-{
- int i, n = sizeof wordlist / sizeof (struct resword);
-
- for (i = 0; i < n; i++)
- if ((int) wordlist[i].rid >= (int) RID_IN
- && (int) wordlist[i].rid <= (int) RID_ONEWAY)
- wordlist[i].name = "";
-}
-
-void
-remember_protocol_qualifiers ()
-{
- int i, n = sizeof wordlist / sizeof (struct resword);
-
- for (i = 0; i < n; i++)
- if (wordlist[i].rid == RID_IN)
- wordlist[i].name = "in";
- else if (wordlist[i].rid == RID_OUT)
- wordlist[i].name = "out";
- else if (wordlist[i].rid == RID_INOUT)
- wordlist[i].name = "inout";
- else if (wordlist[i].rid == RID_BYCOPY)
- wordlist[i].name = "bycopy";
- else if (wordlist[i].rid == RID_ONEWAY)
- wordlist[i].name = "oneway";
-}
-
-void
-init_lex ()
-{
- /* Make identifier nodes long enough for the language-specific slots. */
- set_identifier_size (sizeof (struct lang_identifier));
-
- /* Start it at 0, because check_newline is called at the very beginning
- and will increment it to 1. */
- lineno = 0;
-
-#ifdef MULTIBYTE_CHARS
- /* Change to the native locale for multibyte conversions. */
- setlocale (LC_CTYPE, "");
-#endif
-
- maxtoken = 40;
- token_buffer = (char *) xmalloc (maxtoken + 2);
-
- ridpointers[(int) RID_INT] = get_identifier ("int");
- ridpointers[(int) RID_CHAR] = get_identifier ("char");
- ridpointers[(int) RID_VOID] = get_identifier ("void");
- ridpointers[(int) RID_FLOAT] = get_identifier ("float");
- ridpointers[(int) RID_DOUBLE] = get_identifier ("double");
- ridpointers[(int) RID_SHORT] = get_identifier ("short");
- ridpointers[(int) RID_LONG] = get_identifier ("long");
- ridpointers[(int) RID_UNSIGNED] = get_identifier ("unsigned");
- ridpointers[(int) RID_SIGNED] = get_identifier ("signed");
- ridpointers[(int) RID_INLINE] = get_identifier ("inline");
- ridpointers[(int) RID_CONST] = get_identifier ("const");
- ridpointers[(int) RID_VOLATILE] = get_identifier ("volatile");
- ridpointers[(int) RID_AUTO] = get_identifier ("auto");
- ridpointers[(int) RID_STATIC] = get_identifier ("static");
- ridpointers[(int) RID_EXTERN] = get_identifier ("extern");
- ridpointers[(int) RID_TYPEDEF] = get_identifier ("typedef");
- ridpointers[(int) RID_REGISTER] = get_identifier ("register");
- ridpointers[(int) RID_ITERATOR] = get_identifier ("iterator");
- ridpointers[(int) RID_COMPLEX] = get_identifier ("complex");
- ridpointers[(int) RID_ID] = get_identifier ("id");
- ridpointers[(int) RID_IN] = get_identifier ("in");
- ridpointers[(int) RID_OUT] = get_identifier ("out");
- ridpointers[(int) RID_INOUT] = get_identifier ("inout");
- ridpointers[(int) RID_BYCOPY] = get_identifier ("bycopy");
- ridpointers[(int) RID_ONEWAY] = get_identifier ("oneway");
- forget_protocol_qualifiers();
-
- /* Some options inhibit certain reserved words.
- Clear those words out of the hash table so they won't be recognized. */
-#define UNSET_RESERVED_WORD(STRING) \
- do { struct resword *s = is_reserved_word (STRING, sizeof (STRING) - 1); \
- if (s) s->name = ""; } while (0)
-
- if (! doing_objc_thang)
- UNSET_RESERVED_WORD ("id");
-
- if (flag_traditional)
- {
- UNSET_RESERVED_WORD ("const");
- UNSET_RESERVED_WORD ("volatile");
- UNSET_RESERVED_WORD ("typeof");
- UNSET_RESERVED_WORD ("signed");
- UNSET_RESERVED_WORD ("inline");
- UNSET_RESERVED_WORD ("iterator");
- UNSET_RESERVED_WORD ("complex");
- }
- if (flag_no_asm)
- {
- UNSET_RESERVED_WORD ("asm");
- UNSET_RESERVED_WORD ("typeof");
- UNSET_RESERVED_WORD ("inline");
- UNSET_RESERVED_WORD ("iterator");
- UNSET_RESERVED_WORD ("complex");
- }
-}
-
-void
-reinit_parse_for_function ()
-{
-}
-
-/* Function used when yydebug is set, to print a token in more detail. */
-
-void
-yyprint (file, yychar, yylval)
- FILE *file;
- int yychar;
- YYSTYPE yylval;
-{
- tree t;
- switch (yychar)
- {
- case IDENTIFIER:
- case TYPENAME:
- case OBJECTNAME:
- t = yylval.ttype;
- if (IDENTIFIER_POINTER (t))
- fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
- break;
-
- case CONSTANT:
- t = yylval.ttype;
- if (TREE_CODE (t) == INTEGER_CST)
- fprintf (file,
-#if HOST_BITS_PER_WIDE_INT == 64
-#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
- " 0x%lx%016lx",
-#else
- " 0x%x%016x",
-#endif
-#else
-#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
- " 0x%lx%08lx",
-#else
- " 0x%x%08x",
-#endif
-#endif
- TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
- break;
- }
-}
-
-
-/* If C is not whitespace, return C.
- Otherwise skip whitespace and return first nonwhite char read. */
-
-static int
-skip_white_space (c)
- register int c;
-{
- static int newline_warning = 0;
-
- for (;;)
- {
- switch (c)
- {
- /* We don't recognize comments here, because
- cpp output can include / and * consecutively as operators.
- Also, there's no need, since cpp removes all comments. */
-
- case '\n':
- c = check_newline ();
- break;
-
- case ' ':
- case '\t':
- case '\f':
- case '\v':
- case '\b':
- c = getc (finput);
- break;
-
- case '\r':
- /* ANSI C says the effects of a carriage return in a source file
- are undefined. */
- if (pedantic && !newline_warning)
- {
- warning ("carriage return in source file");
- warning ("(we only warn about the first carriage return)");
- newline_warning = 1;
- }
- c = getc (finput);
- break;
-
- case '\\':
- c = getc (finput);
- if (c == '\n')
- lineno++;
- else
- error ("stray '\\' in program");
- c = getc (finput);
- break;
-
- default:
- return (c);
- }
- }
-}
-
-/* Skips all of the white space at the current location in the input file.
- Must use and reset nextchar if it has the next character. */
-
-void
-position_after_white_space ()
-{
- register int c;
-
- if (nextchar != -1)
- c = nextchar, nextchar = -1;
- else
- c = getc (finput);
-
- ungetc (skip_white_space (c), finput);
-}
-
-/* Make the token buffer longer, preserving the data in it.
- P should point to just beyond the last valid character in the old buffer.
- The value we return is a pointer to the new buffer
- at a place corresponding to P. */
-
-static char *
-extend_token_buffer (p)
- char *p;
-{
- int offset = p - token_buffer;
-
- maxtoken = maxtoken * 2 + 10;
- token_buffer = (char *) xrealloc (token_buffer, maxtoken + 2);
-
- return token_buffer + offset;
-}
-
-/* At the beginning of a line, increment the line number
- and process any #-directive on this line.
- If the line is a #-directive, read the entire line and return a newline.
- Otherwise, return the line's first non-whitespace character. */
-
-int
-check_newline ()
-{
- register int c;
- register int token;
-
- lineno++;
-
- /* Read first nonwhite char on the line. */
-
- c = getc (finput);
- while (c == ' ' || c == '\t')
- c = getc (finput);
-
- if (c != '#')
- {
- /* If not #, return it so caller will use it. */
- return c;
- }
-
- /* Read first nonwhite char after the `#'. */
-
- c = getc (finput);
- while (c == ' ' || c == '\t')
- c = getc (finput);
-
- /* If a letter follows, then if the word here is `line', skip
- it and ignore it; otherwise, ignore the line, with an error
- if the word isn't `pragma', `ident', `define', or `undef'. */
-
- if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
- {
- if (c == 'p')
- {
- if (getc (finput) == 'r'
- && getc (finput) == 'a'
- && getc (finput) == 'g'
- && getc (finput) == 'm'
- && getc (finput) == 'a'
- && ((c = getc (finput)) == ' ' || c == '\t' || c == '\n'))
- {
-#ifdef HANDLE_SYSV_PRAGMA
- return handle_sysv_pragma (finput, c);
-#endif /* HANDLE_SYSV_PRAGMA */
-#ifdef HANDLE_PRAGMA
- HANDLE_PRAGMA (finput);
-#endif /* HANDLE_PRAGMA */
- goto skipline;
- }
- }
-
- else if (c == 'd')
- {
- if (getc (finput) == 'e'
- && getc (finput) == 'f'
- && getc (finput) == 'i'
- && getc (finput) == 'n'
- && getc (finput) == 'e'
- && ((c = getc (finput)) == ' ' || c == '\t' || c == '\n'))
- {
-#ifdef DWARF_DEBUGGING_INFO
- if ((debug_info_level == DINFO_LEVEL_VERBOSE)
- && (write_symbols == DWARF_DEBUG))
- dwarfout_define (lineno, get_directive_line (finput));
-#endif /* DWARF_DEBUGGING_INFO */
- goto skipline;
- }
- }
- else if (c == 'u')
- {
- if (getc (finput) == 'n'
- && getc (finput) == 'd'
- && getc (finput) == 'e'
- && getc (finput) == 'f'
- && ((c = getc (finput)) == ' ' || c == '\t' || c == '\n'))
- {
-#ifdef DWARF_DEBUGGING_INFO
- if ((debug_info_level == DINFO_LEVEL_VERBOSE)
- && (write_symbols == DWARF_DEBUG))
- dwarfout_undef (lineno, get_directive_line (finput));
-#endif /* DWARF_DEBUGGING_INFO */
- goto skipline;
- }
- }
- else if (c == 'l')
- {
- if (getc (finput) == 'i'
- && getc (finput) == 'n'
- && getc (finput) == 'e'
- && ((c = getc (finput)) == ' ' || c == '\t'))
- goto linenum;
- }
- else if (c == 'i')
- {
- if (getc (finput) == 'd'
- && getc (finput) == 'e'
- && getc (finput) == 'n'
- && getc (finput) == 't'
- && ((c = getc (finput)) == ' ' || c == '\t'))
- {
- /* #ident. The pedantic warning is now in cccp.c. */
-
- /* Here we have just seen `#ident '.
- A string constant should follow. */
-
- while (c == ' ' || c == '\t')
- c = getc (finput);
-
- /* If no argument, ignore the line. */
- if (c == '\n')
- return c;
-
- ungetc (c, finput);
- token = yylex ();
- if (token != STRING
- || TREE_CODE (yylval.ttype) != STRING_CST)
- {
- error ("invalid #ident");
- goto skipline;
- }
-
- if (!flag_no_ident)
- {
-#ifdef ASM_OUTPUT_IDENT
- ASM_OUTPUT_IDENT (asm_out_file, TREE_STRING_POINTER (yylval.ttype));
-#endif
- }
-
- /* Skip the rest of this line. */
- goto skipline;
- }
- }
-
- error ("undefined or invalid # directive");
- goto skipline;
- }
-
-linenum:
- /* Here we have either `#line' or `# <nonletter>'.
- In either case, it should be a line number; a digit should follow. */
-
- while (c == ' ' || c == '\t')
- c = getc (finput);
-
- /* If the # is the only nonwhite char on the line,
- just ignore it. Check the new newline. */
- if (c == '\n')
- return c;
-
- /* Something follows the #; read a token. */
-
- ungetc (c, finput);
- token = yylex ();
-
- if (token == CONSTANT
- && TREE_CODE (yylval.ttype) == INTEGER_CST)
- {
- int old_lineno = lineno;
- int used_up = 0;
- /* subtract one, because it is the following line that
- gets the specified number */
-
- int l = TREE_INT_CST_LOW (yylval.ttype) - 1;
-
- /* Is this the last nonwhite stuff on the line? */
- c = getc (finput);
- while (c == ' ' || c == '\t')
- c = getc (finput);
- if (c == '\n')
- {
- /* No more: store the line number and check following line. */
- lineno = l;
- return c;
- }
- ungetc (c, finput);
-
- /* More follows: it must be a string constant (filename). */
-
- /* Read the string constant, but don't treat \ as special. */
- ignore_escape_flag = 1;
- token = yylex ();
- ignore_escape_flag = 0;
-
- if (token != STRING || TREE_CODE (yylval.ttype) != STRING_CST)
- {
- error ("invalid #line");
- goto skipline;
- }
-
- input_filename
- = (char *) permalloc (TREE_STRING_LENGTH (yylval.ttype) + 1);
- strcpy (input_filename, TREE_STRING_POINTER (yylval.ttype));
- lineno = l;
-
- /* Each change of file name
- reinitializes whether we are now in a system header. */
- in_system_header = 0;
-
- if (main_input_filename == 0)
- main_input_filename = input_filename;
-
- /* Is this the last nonwhite stuff on the line? */
- c = getc (finput);
- while (c == ' ' || c == '\t')
- c = getc (finput);
- if (c == '\n')
- {
- /* Update the name in the top element of input_file_stack. */
- if (input_file_stack)
- input_file_stack->name = input_filename;
-
- return c;
- }
- ungetc (c, finput);
-
- token = yylex ();
- used_up = 0;
-
- /* `1' after file name means entering new file.
- `2' after file name means just left a file. */
-
- if (token == CONSTANT
- && TREE_CODE (yylval.ttype) == INTEGER_CST)
- {
- if (TREE_INT_CST_LOW (yylval.ttype) == 1)
- {
- /* Pushing to a new file. */
- struct file_stack *p
- = (struct file_stack *) xmalloc (sizeof (struct file_stack));
- input_file_stack->line = old_lineno;
- p->next = input_file_stack;
- p->name = input_filename;
- input_file_stack = p;
- input_file_stack_tick++;
-#ifdef DWARF_DEBUGGING_INFO
- if (debug_info_level == DINFO_LEVEL_VERBOSE
- && write_symbols == DWARF_DEBUG)
- dwarfout_start_new_source_file (input_filename);
-#endif /* DWARF_DEBUGGING_INFO */
-
- used_up = 1;
- }
- else if (TREE_INT_CST_LOW (yylval.ttype) == 2)
- {
- /* Popping out of a file. */
- if (input_file_stack->next)
- {
- struct file_stack *p = input_file_stack;
- input_file_stack = p->next;
- free (p);
- input_file_stack_tick++;
-#ifdef DWARF_DEBUGGING_INFO
- if (debug_info_level == DINFO_LEVEL_VERBOSE
- && write_symbols == DWARF_DEBUG)
- dwarfout_resume_previous_source_file (input_file_stack->line);
-#endif /* DWARF_DEBUGGING_INFO */
- }
- else
- error ("#-lines for entering and leaving files don't match");
-
- used_up = 1;
- }
- }
-
- /* Now that we've pushed or popped the input stack,
- update the name in the top element. */
- if (input_file_stack)
- input_file_stack->name = input_filename;
-
- /* If we have handled a `1' or a `2',
- see if there is another number to read. */
- if (used_up)
- {
- /* Is this the last nonwhite stuff on the line? */
- c = getc (finput);
- while (c == ' ' || c == '\t')
- c = getc (finput);
- if (c == '\n')
- return c;
- ungetc (c, finput);
-
- token = yylex ();
- used_up = 0;
- }
-
- /* `3' after file name means this is a system header file. */
-
- if (token == CONSTANT
- && TREE_CODE (yylval.ttype) == INTEGER_CST
- && TREE_INT_CST_LOW (yylval.ttype) == 3)
- in_system_header = 1;
- }
- else
- error ("invalid #-line");
-
- /* skip the rest of this line. */
- skipline:
- if (c == '\n')
- return c;
- while ((c = getc (finput)) != EOF && c != '\n');
- return c;
-}
-
-#ifdef HANDLE_SYSV_PRAGMA
-
-/* Handle a #pragma directive. INPUT is the current input stream,
- and C is a character to reread. Processes the entire input line
- and returns a character for the caller to reread: either \n or EOF. */
-
-/* This function has to be in this file, in order to get at
- the token types. */
-
-int
-handle_sysv_pragma (input, c)
- FILE *input;
- int c;
-{
- for (;;)
- {
- while (c == ' ' || c == '\t')
- c = getc (input);
- if (c == '\n' || c == EOF)
- {
- handle_pragma_token (0, 0);
- return c;
- }
- ungetc (c, input);
- switch (yylex ())
- {
- case IDENTIFIER:
- case TYPENAME:
- case STRING:
- case CONSTANT:
- handle_pragma_token (token_buffer, yylval.ttype);
- break;
- default:
- handle_pragma_token (token_buffer, 0);
- }
- if (nextchar >= 0)
- c = nextchar, nextchar = -1;
- else
- c = getc (input);
- }
-}
-
-#endif /* HANDLE_SYSV_PRAGMA */
-
-#define isalnum(char) ((char >= 'a' && char <= 'z') || (char >= 'A' && char <= 'Z') || (char >= '0' && char <= '9'))
-#define isdigit(char) (char >= '0' && char <= '9')
-#define ENDFILE -1 /* token that represents end-of-file */
-
-/* Read an escape sequence, returning its equivalent as a character,
- or store 1 in *ignore_ptr if it is backslash-newline. */
-
-static int
-readescape (ignore_ptr)
- int *ignore_ptr;
-{
- register int c = getc (finput);
- register int code;
- register unsigned count;
- unsigned firstdig;
- int nonnull;
-
- switch (c)
- {
- case 'x':
- if (warn_traditional)
- warning ("the meaning of `\\x' varies with -traditional");
-
- if (flag_traditional)
- return c;
-
- code = 0;
- count = 0;
- nonnull = 0;
- while (1)
- {
- c = getc (finput);
- if (!(c >= 'a' && c <= 'f')
- && !(c >= 'A' && c <= 'F')
- && !(c >= '0' && c <= '9'))
- {
- ungetc (c, finput);
- break;
- }
- code *= 16;
- if (c >= 'a' && c <= 'f')
- code += c - 'a' + 10;
- if (c >= 'A' && c <= 'F')
- code += c - 'A' + 10;
- if (c >= '0' && c <= '9')
- code += c - '0';
- if (code != 0 || count != 0)
- {
- if (count == 0)
- firstdig = code;
- count++;
- }
- nonnull = 1;
- }
- if (! nonnull)
- error ("\\x used with no following hex digits");
- else if (count == 0)
- /* Digits are all 0's. Ok. */
- ;
- else if ((count - 1) * 4 >= TYPE_PRECISION (integer_type_node)
- || (count > 1
- && ((1 << (TYPE_PRECISION (integer_type_node) - (count - 1) * 4))
- <= firstdig)))
- pedwarn ("hex escape out of range");
- return code;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7':
- code = 0;
- count = 0;
- while ((c <= '7') && (c >= '0') && (count++ < 3))
- {
- code = (code * 8) + (c - '0');
- c = getc (finput);
- }
- ungetc (c, finput);
- return code;
-
- case '\\': case '\'': case '"':
- return c;
-
- case '\n':
- lineno++;
- *ignore_ptr = 1;
- return 0;
-
- case 'n':
- return TARGET_NEWLINE;
-
- case 't':
- return TARGET_TAB;
-
- case 'r':
- return TARGET_CR;
-
- case 'f':
- return TARGET_FF;
-
- case 'b':
- return TARGET_BS;
-
- case 'a':
- if (warn_traditional)
- warning ("the meaning of `\\a' varies with -traditional");
-
- if (flag_traditional)
- return c;
- return TARGET_BELL;
-
- case 'v':
-#if 0 /* Vertical tab is present in common usage compilers. */
- if (flag_traditional)
- return c;
-#endif
- return TARGET_VT;
-
- case 'e':
- case 'E':
- if (pedantic)
- pedwarn ("non-ANSI-standard escape sequence, `\\%c'", c);
- return 033;
-
- case '?':
- return c;
-
- /* `\(', etc, are used at beginning of line to avoid confusing Emacs. */
- case '(':
- case '{':
- case '[':
- /* `\%' is used to prevent SCCS from getting confused. */
- case '%':
- if (pedantic)
- pedwarn ("non-ANSI escape sequence `\\%c'", c);
- return c;
- }
- if (c >= 040 && c < 0177)
- pedwarn ("unknown escape sequence `\\%c'", c);
- else
- pedwarn ("unknown escape sequence: `\\' followed by char code 0x%x", c);
- return c;
-}
-
-void
-yyerror (string)
- char *string;
-{
- char buf[200];
-
- strcpy (buf, string);
-
- /* We can't print string and character constants well
- because the token_buffer contains the result of processing escapes. */
- if (end_of_file)
- strcat (buf, " at end of input");
- else if (token_buffer[0] == 0)
- strcat (buf, " at null character");
- else if (token_buffer[0] == '"')
- strcat (buf, " before string constant");
- else if (token_buffer[0] == '\'')
- strcat (buf, " before character constant");
- else if (token_buffer[0] < 040 || (unsigned char) token_buffer[0] >= 0177)
- sprintf (buf + strlen (buf), " before character 0%o",
- (unsigned char) token_buffer[0]);
- else
- strcat (buf, " before `%s'");
-
- error (buf, token_buffer);
-}
-
-#if 0
-
-struct try_type
-{
- tree *node_var;
- char unsigned_flag;
- char long_flag;
- char long_long_flag;
-};
-
-struct try_type type_sequence[] =
-{
- { &integer_type_node, 0, 0, 0},
- { &unsigned_type_node, 1, 0, 0},
- { &long_integer_type_node, 0, 1, 0},
- { &long_unsigned_type_node, 1, 1, 0},
- { &long_long_integer_type_node, 0, 1, 1},
- { &long_long_unsigned_type_node, 1, 1, 1}
-};
-#endif /* 0 */
-
-int
-yylex ()
-{
- register int c;
- register char *p;
- register int value;
- int wide_flag = 0;
- int objc_flag = 0;
-
- if (nextchar >= 0)
- c = nextchar, nextchar = -1;
- else
- c = getc (finput);
-
- /* Effectively do c = skip_white_space (c)
- but do it faster in the usual cases. */
- while (1)
- switch (c)
- {
- case ' ':
- case '\t':
- case '\f':
- case '\v':
- case '\b':
- c = getc (finput);
- break;
-
- case '\r':
- /* Call skip_white_space so we can warn if appropriate. */
-
- case '\n':
- case '/':
- case '\\':
- c = skip_white_space (c);
- default:
- goto found_nonwhite;
- }
- found_nonwhite:
-
- token_buffer[0] = c;
- token_buffer[1] = 0;
-
-/* yylloc.first_line = lineno; */
-
- switch (c)
- {
- case EOF:
- end_of_file = 1;
- token_buffer[0] = 0;
- value = ENDFILE;
- break;
-
- case '$':
- if (dollars_in_ident)
- goto letter;
- return '$';
-
- case 'L':
- /* Capital L may start a wide-string or wide-character constant. */
- {
- register int c = getc (finput);
- if (c == '\'')
- {
- wide_flag = 1;
- goto char_constant;
- }
- if (c == '"')
- {
- wide_flag = 1;
- goto string_constant;
- }
- ungetc (c, finput);
- }
- goto letter;
-
- case '@':
- if (!doing_objc_thang)
- {
- value = c;
- break;
- }
- else
- {
- /* '@' may start a constant string object. */
- register int c = getc(finput);
- if (c == '"')
- {
- objc_flag = 1;
- goto string_constant;
- }
- ungetc(c, finput);
- /* Fall through to treat '@' as the start of an indentifier. */
- }
-
- case 'A': case 'B': case 'C': case 'D': case 'E':
- case 'F': case 'G': case 'H': case 'I': case 'J':
- case 'K': case 'M': case 'N': case 'O':
- case 'P': case 'Q': case 'R': case 'S': case 'T':
- case 'U': case 'V': case 'W': case 'X': case 'Y':
- case 'Z':
- case 'a': case 'b': case 'c': case 'd': case 'e':
- case 'f': case 'g': case 'h': case 'i': case 'j':
- case 'k': case 'l': case 'm': case 'n': case 'o':
- case 'p': case 'q': case 'r': case 's': case 't':
- case 'u': case 'v': case 'w': case 'x': case 'y':
- case 'z':
- case '_':
- letter:
- p = token_buffer;
- while (isalnum (c) || c == '_' || c == '$' || c == '@')
- {
- /* Make sure this char really belongs in an identifier. */
- if (c == '@' && ! doing_objc_thang)
- break;
- if (c == '$' && ! dollars_in_ident)
- break;
-
- if (p >= token_buffer + maxtoken)
- p = extend_token_buffer (p);
-
- *p++ = c;
- c = getc (finput);
- }
-
- *p = 0;
- nextchar = c;
-
- value = IDENTIFIER;
- yylval.itype = 0;
-
- /* Try to recognize a keyword. Uses minimum-perfect hash function */
-
- {
- register struct resword *ptr;
-
- if (ptr = is_reserved_word (token_buffer, p - token_buffer))
- {
- if (ptr->rid)
- yylval.ttype = ridpointers[(int) ptr->rid];
- value = (int) ptr->token;
-
- /* Only return OBJECTNAME if it is a typedef. */
- if (doing_objc_thang && value == OBJECTNAME)
- {
- lastiddecl = lookup_name(yylval.ttype);
-
- if (lastiddecl == NULL_TREE
- || TREE_CODE (lastiddecl) != TYPE_DECL)
- value = IDENTIFIER;
- }
-
- /* Even if we decided to recognize asm, still perhaps warn. */
- if (pedantic
- && (value == ASM_KEYWORD || value == TYPEOF
- || ptr->rid == RID_INLINE)
- && token_buffer[0] != '_')
- pedwarn ("ANSI does not permit the keyword `%s'",
- token_buffer);
- }
- }
-
- /* If we did not find a keyword, look for an identifier
- (or a typename). */
-
- if (value == IDENTIFIER)
- {
- if (token_buffer[0] == '@')
- error("invalid identifier `%s'", token_buffer);
-
- yylval.ttype = get_identifier (token_buffer);
- lastiddecl = lookup_name (yylval.ttype);
-
- if (lastiddecl != 0 && TREE_CODE (lastiddecl) == TYPE_DECL)
- value = TYPENAME;
- /* A user-invisible read-only initialized variable
- should be replaced by its value.
- We handle only strings since that's the only case used in C. */
- else if (lastiddecl != 0 && TREE_CODE (lastiddecl) == VAR_DECL
- && DECL_IGNORED_P (lastiddecl)
- && TREE_READONLY (lastiddecl)
- && DECL_INITIAL (lastiddecl) != 0
- && TREE_CODE (DECL_INITIAL (lastiddecl)) == STRING_CST)
- {
- tree stringval = DECL_INITIAL (lastiddecl);
-
- /* Copy the string value so that we won't clobber anything
- if we put something in the TREE_CHAIN of this one. */
- yylval.ttype = build_string (TREE_STRING_LENGTH (stringval),
- TREE_STRING_POINTER (stringval));
- value = STRING;
- }
- else if (doing_objc_thang)
- {
- tree objc_interface_decl = is_class_name (yylval.ttype);
-
- if (objc_interface_decl)
- {
- value = CLASSNAME;
- yylval.ttype = objc_interface_decl;
- }
- }
- }
-
- break;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- case '.':
- {
- int base = 10;
- int count = 0;
- int largest_digit = 0;
- int numdigits = 0;
- /* for multi-precision arithmetic,
- we actually store only HOST_BITS_PER_CHAR bits in each part.
- The number of parts is chosen so as to be sufficient to hold
- the enough bits to fit into the two HOST_WIDE_INTs that contain
- the integer value (this is always at least as many bits as are
- in a target `long long' value, but may be wider). */
-#define TOTAL_PARTS ((HOST_BITS_PER_WIDE_INT / HOST_BITS_PER_CHAR) * 2 + 2)
- int parts[TOTAL_PARTS];
- int overflow = 0;
-
- enum anon1 { NOT_FLOAT, AFTER_POINT, TOO_MANY_POINTS} floatflag
- = NOT_FLOAT;
-
- for (count = 0; count < TOTAL_PARTS; count++)
- parts[count] = 0;
-
- p = token_buffer;
- *p++ = c;
-
- if (c == '0')
- {
- *p++ = (c = getc (finput));
- if ((c == 'x') || (c == 'X'))
- {
- base = 16;
- *p++ = (c = getc (finput));
- }
- /* Leading 0 forces octal unless the 0 is the only digit. */
- else if (c >= '0' && c <= '9')
- {
- base = 8;
- numdigits++;
- }
- else
- numdigits++;
- }
-
- /* Read all the digits-and-decimal-points. */
-
- while (c == '.'
- || (isalnum (c) && c != 'l' && c != 'L'
- && c != 'u' && c != 'U'
- && c != 'i' && c != 'I' && c != 'j' && c != 'J'
- && (floatflag == NOT_FLOAT || ((c != 'f') && (c != 'F')))))
- {
- if (c == '.')
- {
- if (base == 16)
- error ("floating constant may not be in radix 16");
- if (floatflag == AFTER_POINT)
- {
- error ("malformed floating constant");
- floatflag = TOO_MANY_POINTS;
- }
- else
- floatflag = AFTER_POINT;
-
- base = 10;
- *p++ = c = getc (finput);
- /* Accept '.' as the start of a floating-point number
- only when it is followed by a digit.
- Otherwise, unread the following non-digit
- and use the '.' as a structural token. */
- if (p == token_buffer + 2 && !isdigit (c))
- {
- if (c == '.')
- {
- c = getc (finput);
- if (c == '.')
- {
- *p++ = c;
- *p = 0;
- return ELLIPSIS;
- }
- error ("parse error at `..'");
- }
- ungetc (c, finput);
- token_buffer[1] = 0;
- value = '.';
- goto done;
- }
- }
- else
- {
- /* It is not a decimal point.
- It should be a digit (perhaps a hex digit). */
-
- if (isdigit (c))
- {
- c = c - '0';
- }
- else if (base <= 10)
- {
- if (c == 'e' || c == 'E')
- {
- base = 10;
- floatflag = AFTER_POINT;
- break; /* start of exponent */
- }
- error ("nondigits in number and not hexadecimal");
- c = 0;
- }
- else if (c >= 'a')
- {
- c = c - 'a' + 10;
- }
- else
- {
- c = c - 'A' + 10;
- }
- if (c >= largest_digit)
- largest_digit = c;
- numdigits++;
-
- for (count = 0; count < TOTAL_PARTS; count++)
- {
- parts[count] *= base;
- if (count)
- {
- parts[count]
- += (parts[count-1] >> HOST_BITS_PER_CHAR);
- parts[count-1]
- &= (1 << HOST_BITS_PER_CHAR) - 1;
- }
- else
- parts[0] += c;
- }
-
- /* If the extra highest-order part ever gets anything in it,
- the number is certainly too big. */
- if (parts[TOTAL_PARTS - 1] != 0)
- overflow = 1;
-
- if (p >= token_buffer + maxtoken - 3)
- p = extend_token_buffer (p);
- *p++ = (c = getc (finput));
- }
- }
-
- if (numdigits == 0)
- error ("numeric constant with no digits");
-
- if (largest_digit >= base)
- error ("numeric constant contains digits beyond the radix");
-
- /* Remove terminating char from the token buffer and delimit the string */
- *--p = 0;
-
- if (floatflag != NOT_FLOAT)
- {
- tree type = double_type_node;
- int garbage_chars = 0, exceeds_double = 0;
- int imag = 0;
- REAL_VALUE_TYPE value;
- jmp_buf handler;
-
- /* Read explicit exponent if any, and put it in tokenbuf. */
-
- if ((c == 'e') || (c == 'E'))
- {
- if (p >= token_buffer + maxtoken - 3)
- p = extend_token_buffer (p);
- *p++ = c;
- c = getc (finput);
- if ((c == '+') || (c == '-'))
- {
- *p++ = c;
- c = getc (finput);
- }
- if (! isdigit (c))
- error ("floating constant exponent has no digits");
- while (isdigit (c))
- {
- if (p >= token_buffer + maxtoken - 3)
- p = extend_token_buffer (p);
- *p++ = c;
- c = getc (finput);
- }
- }
-
- *p = 0;
- errno = 0;
-
- /* Convert string to a double, checking for overflow. */
- if (setjmp (handler))
- {
- error ("floating constant out of range");
- value = dconst0;
- }
- else
- {
- set_float_handler (handler);
-
-/* The second argument, machine_mode, of REAL_VALUE_ATOF tells the
- desired precision of the binary result of decimal-to-binary conversion. */
-
- /* Read the suffixes to choose a data type. */
- switch (c)
- {
- case 'f': case 'F':
- type = float_type_node;
- value = REAL_VALUE_ATOF (token_buffer, TYPE_MODE (type));
- if (TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT
- && REAL_VALUE_ISINF (value) && pedantic)
- pedwarn ("floating point number exceeds range of `float'");
- garbage_chars = -1;
- break;
-
- case 'l': case 'L':
- type = long_double_type_node;
- value = REAL_VALUE_ATOF (token_buffer, TYPE_MODE (type));
- if (TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT
- && REAL_VALUE_ISINF (value) && pedantic)
- pedwarn (
- "floating point number exceeds range of `long double'");
- garbage_chars = -1;
- break;
-
- case 'i': case 'I':
- if (imag)
- error ("more than one `i' or `j' in numeric constant");
- imag = 1;
- garbage_chars = -1;
- break;
-
- default:
- value = REAL_VALUE_ATOF (token_buffer, TYPE_MODE (type));
- if (TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT
- && REAL_VALUE_ISINF (value) && pedantic)
- pedwarn ("floating point number exceeds range of `double'");
- }
- set_float_handler (NULL_PTR);
- }
-#ifdef ERANGE
- if (errno == ERANGE && !flag_traditional && pedantic)
- {
- /* ERANGE is also reported for underflow,
- so test the value to distinguish overflow from that. */
- if (TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT
- && (REAL_VALUES_LESS (dconst1, value)
- || REAL_VALUES_LESS (value, dconstm1)))
- {
- pedwarn ("floating point number exceeds range of `double'");
- exceeds_double = 1;
- }
- }
-#endif
- /* Note: garbage_chars is -1 if first char is *not* garbage. */
- while (isalnum (c) || c == '.' || c == '_'
- || (!flag_traditional && (c == '+' || c == '-')
- && (p[-1] == 'e' || p[-1] == 'E')))
- {
- if (p >= token_buffer + maxtoken - 3)
- p = extend_token_buffer (p);
- *p++ = c;
- c = getc (finput);
- garbage_chars++;
- }
- if (garbage_chars > 0)
- error ("garbage at end of number");
-
- /* Create a node with determined type and value. */
- if (imag)
- yylval.ttype = build_complex (convert (type, integer_zero_node),
- build_real (type, value));
- else
- yylval.ttype = build_real (type, value);
-
- ungetc (c, finput);
- *p = 0;
- }
- else
- {
- tree traditional_type, ansi_type, type;
- HOST_WIDE_INT high, low;
- int spec_unsigned = 0;
- int spec_long = 0;
- int spec_long_long = 0;
- int spec_imag = 0;
- int bytes, warn, i;
-
- while (1)
- {
- if (c == 'u' || c == 'U')
- {
- if (spec_unsigned)
- error ("two `u's in integer constant");
- spec_unsigned = 1;
- }
- else if (c == 'l' || c == 'L')
- {
- if (spec_long)
- {
- if (spec_long_long)
- error ("three `l's in integer constant");
- else if (pedantic)
- pedwarn ("ANSI C forbids long long integer constants");
- spec_long_long = 1;
- }
- spec_long = 1;
- }
- else if (c == 'i' || c == 'j' || c == 'I' || c == 'J')
- {
- if (spec_imag)
- error ("more than one `i' or `j' in numeric constant");
- spec_imag = 1;
- }
- else
- {
- if (isalnum (c) || c == '.' || c == '_'
- || (!flag_traditional && (c == '+' || c == '-')
- && (p[-1] == 'e' || p[-1] == 'E')))
- {
- error ("garbage at end of number");
- while (isalnum (c) || c == '.' || c == '_'
- || (!flag_traditional && (c == '+' || c == '-')
- && (p[-1] == 'e' || p[-1] == 'E')))
- {
- if (p >= token_buffer + maxtoken - 3)
- p = extend_token_buffer (p);
- *p++ = c;
- c = getc (finput);
- }
- }
- break;
- }
- if (p >= token_buffer + maxtoken - 3)
- p = extend_token_buffer (p);
- *p++ = c;
- c = getc (finput);
- }
-
- ungetc (c, finput);
-
- /* If the constant is not long long and it won't fit in an
- unsigned long, or if the constant is long long and won't fit
- in an unsigned long long, then warn that the constant is out
- of range. */
-
- /* ??? This assumes that long long and long integer types are
- a multiple of 8 bits. This better than the original code
- though which assumed that long was exactly 32 bits and long
- long was exactly 64 bits. */
-
- if (spec_long_long)
- bytes = TYPE_PRECISION (long_long_integer_type_node) / 8;
- else
- bytes = TYPE_PRECISION (long_integer_type_node) / 8;
-
- warn = overflow;
- for (i = bytes; i < TOTAL_PARTS; i++)
- if (parts[i])
- warn = 1;
- if (warn)
- pedwarn ("integer constant out of range");
-
- /* This is simplified by the fact that our constant
- is always positive. */
-
- high = low = 0;
-
- for (i = 0; i < HOST_BITS_PER_WIDE_INT / HOST_BITS_PER_CHAR; i++)
- {
- high |= ((HOST_WIDE_INT) parts[i + (HOST_BITS_PER_WIDE_INT
- / HOST_BITS_PER_CHAR)]
- << (i * HOST_BITS_PER_CHAR));
- low |= (HOST_WIDE_INT) parts[i] << (i * HOST_BITS_PER_CHAR);
- }
-
- yylval.ttype = build_int_2 (low, high);
- TREE_TYPE (yylval.ttype) = long_long_unsigned_type_node;
-
- /* If warn_traditional, calculate both the ANSI type and the
- traditional type, then see if they disagree.
- Otherwise, calculate only the type for the dialect in use. */
- if (warn_traditional || flag_traditional)
- {
- /* Calculate the traditional type. */
- /* Traditionally, any constant is signed;
- but if unsigned is specified explicitly, obey that.
- Use the smallest size with the right number of bits,
- except for one special case with decimal constants. */
- if (! spec_long && base != 10
- && int_fits_type_p (yylval.ttype, unsigned_type_node))
- traditional_type = (spec_unsigned ? unsigned_type_node
- : integer_type_node);
- /* A decimal constant must be long
- if it does not fit in type int.
- I think this is independent of whether
- the constant is signed. */
- else if (! spec_long && base == 10
- && int_fits_type_p (yylval.ttype, integer_type_node))
- traditional_type = (spec_unsigned ? unsigned_type_node
- : integer_type_node);
- else if (! spec_long_long)
- traditional_type = (spec_unsigned ? long_unsigned_type_node
- : long_integer_type_node);
- else
- traditional_type = (spec_unsigned
- ? long_long_unsigned_type_node
- : long_long_integer_type_node);
- }
- if (warn_traditional || ! flag_traditional)
- {
- /* Calculate the ANSI type. */
- if (! spec_long && ! spec_unsigned
- && int_fits_type_p (yylval.ttype, integer_type_node))
- ansi_type = integer_type_node;
- else if (! spec_long && (base != 10 || spec_unsigned)
- && int_fits_type_p (yylval.ttype, unsigned_type_node))
- ansi_type = unsigned_type_node;
- else if (! spec_unsigned && !spec_long_long
- && int_fits_type_p (yylval.ttype, long_integer_type_node))
- ansi_type = long_integer_type_node;
- else if (! spec_long_long)
- ansi_type = long_unsigned_type_node;
- else if (! spec_unsigned
- /* Verify value does not overflow into sign bit. */
- && TREE_INT_CST_HIGH (yylval.ttype) >= 0
- && int_fits_type_p (yylval.ttype,
- long_long_integer_type_node))
- ansi_type = long_long_integer_type_node;
- else
- ansi_type = long_long_unsigned_type_node;
- }
-
- type = flag_traditional ? traditional_type : ansi_type;
-
- if (warn_traditional && traditional_type != ansi_type)
- {
- if (TYPE_PRECISION (traditional_type)
- != TYPE_PRECISION (ansi_type))
- warning ("width of integer constant changes with -traditional");
- else if (TREE_UNSIGNED (traditional_type)
- != TREE_UNSIGNED (ansi_type))
- warning ("integer constant is unsigned in ANSI C, signed with -traditional");
- else
- warning ("width of integer constant may change on other systems with -traditional");
- }
-
- if (!flag_traditional && !int_fits_type_p (yylval.ttype, type)
- && !warn)
- pedwarn ("integer constant out of range");
-
- if (base == 10 && ! spec_unsigned && TREE_UNSIGNED (type))
- warning ("decimal constant is so large that it is unsigned");
-
- if (spec_imag)
- {
- if (TYPE_PRECISION (type)
- <= TYPE_PRECISION (integer_type_node))
- yylval.ttype
- = build_complex (integer_zero_node,
- convert (integer_type_node, yylval.ttype));
- else
- error ("complex integer constant is too wide for `complex int'");
- }
- else if (flag_traditional && !int_fits_type_p (yylval.ttype, type))
- /* The traditional constant 0x80000000 is signed
- but doesn't fit in the range of int.
- This will change it to -0x80000000, which does fit. */
- {
- TREE_TYPE (yylval.ttype) = unsigned_type (type);
- yylval.ttype = convert (type, yylval.ttype);
- }
- else
- TREE_TYPE (yylval.ttype) = type;
-
- *p = 0;
- }
-
- value = CONSTANT; break;
- }
-
- case '\'':
- char_constant:
- {
- register int result = 0;
- register int num_chars = 0;
- unsigned width = TYPE_PRECISION (char_type_node);
- int max_chars;
-
- if (wide_flag)
- {
- width = WCHAR_TYPE_SIZE;
-#ifdef MULTIBYTE_CHARS
- max_chars = MB_CUR_MAX;
-#else
- max_chars = 1;
-#endif
- }
- else
- max_chars = TYPE_PRECISION (integer_type_node) / width;
-
- while (1)
- {
- tryagain:
-
- c = getc (finput);
-
- if (c == '\'' || c == EOF)
- break;
-
- if (c == '\\')
- {
- int ignore = 0;
- c = readescape (&ignore);
- if (ignore)
- goto tryagain;
- if (width < HOST_BITS_PER_INT
- && (unsigned) c >= (1 << width))
- pedwarn ("escape sequence out of range for character");
-#ifdef MAP_CHARACTER
- if (isprint (c))
- c = MAP_CHARACTER (c);
-#endif
- }
- else if (c == '\n')
- {
- if (pedantic)
- pedwarn ("ANSI C forbids newline in character constant");
- lineno++;
- }
-#ifdef MAP_CHARACTER
- else
- c = MAP_CHARACTER (c);
-#endif
-
- num_chars++;
- if (num_chars > maxtoken - 4)
- extend_token_buffer (token_buffer);
-
- token_buffer[num_chars] = c;
-
- /* Merge character into result; ignore excess chars. */
- if (num_chars < max_chars + 1)
- {
- if (width < HOST_BITS_PER_INT)
- result = (result << width) | (c & ((1 << width) - 1));
- else
- result = c;
- }
- }
-
- token_buffer[num_chars + 1] = '\'';
- token_buffer[num_chars + 2] = 0;
-
- if (c != '\'')
- error ("malformatted character constant");
- else if (num_chars == 0)
- error ("empty character constant");
- else if (num_chars > max_chars)
- {
- num_chars = max_chars;
- error ("character constant too long");
- }
- else if (num_chars != 1 && ! flag_traditional)
- warning ("multi-character character constant");
-
- /* If char type is signed, sign-extend the constant. */
- if (! wide_flag)
- {
- int num_bits = num_chars * width;
- if (num_bits == 0)
- /* We already got an error; avoid invalid shift. */
- yylval.ttype = build_int_2 (0, 0);
- else if (TREE_UNSIGNED (char_type_node)
- || ((result >> (num_bits - 1)) & 1) == 0)
- yylval.ttype
- = build_int_2 (result & ((unsigned HOST_WIDE_INT) ~0
- >> (HOST_BITS_PER_WIDE_INT - num_bits)),
- 0);
- else
- yylval.ttype
- = build_int_2 (result | ~((unsigned HOST_WIDE_INT) ~0
- >> (HOST_BITS_PER_WIDE_INT - num_bits)),
- -1);
- TREE_TYPE (yylval.ttype) = integer_type_node;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- /* Set the initial shift state and convert the next sequence. */
- result = 0;
- /* In all locales L'\0' is zero and mbtowc will return zero,
- so don't use it. */
- if (num_chars > 1
- || (num_chars == 1 && token_buffer[1] != '\0'))
- {
- wchar_t wc;
- (void) mbtowc (NULL_PTR, NULL_PTR, 0);
- if (mbtowc (& wc, token_buffer + 1, num_chars) == num_chars)
- result = wc;
- else
- warning ("Ignoring invalid multibyte character");
- }
-#endif
- yylval.ttype = build_int_2 (result, 0);
- TREE_TYPE (yylval.ttype) = wchar_type_node;
- }
-
- value = CONSTANT;
- break;
- }
-
- case '"':
- string_constant:
- {
- c = getc (finput);
- p = token_buffer + 1;
-
- while (c != '"' && c >= 0)
- {
- /* ignore_escape_flag is set for reading the filename in #line. */
- if (!ignore_escape_flag && c == '\\')
- {
- int ignore = 0;
- c = readescape (&ignore);
- if (ignore)
- goto skipnewline;
- if (!wide_flag
- && TYPE_PRECISION (char_type_node) < HOST_BITS_PER_INT
- && c >= (1 << TYPE_PRECISION (char_type_node)))
- pedwarn ("escape sequence out of range for character");
- }
- else if (c == '\n')
- {
- if (pedantic)
- pedwarn ("ANSI C forbids newline in string constant");
- lineno++;
- }
-
- if (p == token_buffer + maxtoken)
- p = extend_token_buffer (p);
- *p++ = c;
-
- skipnewline:
- c = getc (finput);
- }
- *p = 0;
-
- /* We have read the entire constant.
- Construct a STRING_CST for the result. */
-
- if (wide_flag)
- {
- /* If this is a L"..." wide-string, convert the multibyte string
- to a wide character string. */
- char *widep = (char *) alloca ((p - token_buffer) * WCHAR_BYTES);
- int len;
-
-#ifdef MULTIBYTE_CHARS
- len = mbstowcs ((wchar_t *) widep, token_buffer + 1, p - token_buffer);
- if (len < 0 || len >= (p - token_buffer))
- {
- warning ("Ignoring invalid multibyte string");
- len = 0;
- }
- bzero (widep + (len * WCHAR_BYTES), WCHAR_BYTES);
-#else
- {
- union { long l; char c[sizeof (long)]; } u;
- int big_endian;
- char *wp, *cp;
-
- /* Determine whether host is little or big endian. */
- u.l = 1;
- big_endian = u.c[sizeof (long) - 1];
- wp = widep + (big_endian ? WCHAR_BYTES - 1 : 0);
-
- bzero (widep, (p - token_buffer) * WCHAR_BYTES);
- for (cp = token_buffer + 1; cp < p; cp++)
- *wp = *cp, wp += WCHAR_BYTES;
- len = p - token_buffer - 1;
- }
-#endif
- yylval.ttype = build_string ((len + 1) * WCHAR_BYTES, widep);
- TREE_TYPE (yylval.ttype) = wchar_array_type_node;
- value = STRING;
- }
- else if (objc_flag)
- {
- extern tree build_objc_string();
- /* Return an Objective-C @"..." constant string object. */
- yylval.ttype = build_objc_string (p - token_buffer,
- token_buffer + 1);
- TREE_TYPE (yylval.ttype) = char_array_type_node;
- value = OBJC_STRING;
- }
- else
- {
- yylval.ttype = build_string (p - token_buffer, token_buffer + 1);
- TREE_TYPE (yylval.ttype) = char_array_type_node;
- value = STRING;
- }
-
- *p++ = '"';
- *p = 0;
-
- break;
- }
-
- case '+':
- case '-':
- case '&':
- case '|':
- case '<':
- case '>':
- case '*':
- case '/':
- case '%':
- case '^':
- case '!':
- case '=':
- {
- register int c1;
-
- combine:
-
- switch (c)
- {
- case '+':
- yylval.code = PLUS_EXPR; break;
- case '-':
- yylval.code = MINUS_EXPR; break;
- case '&':
- yylval.code = BIT_AND_EXPR; break;
- case '|':
- yylval.code = BIT_IOR_EXPR; break;
- case '*':
- yylval.code = MULT_EXPR; break;
- case '/':
- yylval.code = TRUNC_DIV_EXPR; break;
- case '%':
- yylval.code = TRUNC_MOD_EXPR; break;
- case '^':
- yylval.code = BIT_XOR_EXPR; break;
- case LSHIFT:
- yylval.code = LSHIFT_EXPR; break;
- case RSHIFT:
- yylval.code = RSHIFT_EXPR; break;
- case '<':
- yylval.code = LT_EXPR; break;
- case '>':
- yylval.code = GT_EXPR; break;
- }
-
- token_buffer[1] = c1 = getc (finput);
- token_buffer[2] = 0;
-
- if (c1 == '=')
- {
- switch (c)
- {
- case '<':
- value = ARITHCOMPARE; yylval.code = LE_EXPR; goto done;
- case '>':
- value = ARITHCOMPARE; yylval.code = GE_EXPR; goto done;
- case '!':
- value = EQCOMPARE; yylval.code = NE_EXPR; goto done;
- case '=':
- value = EQCOMPARE; yylval.code = EQ_EXPR; goto done;
- }
- value = ASSIGN; goto done;
- }
- else if (c == c1)
- switch (c)
- {
- case '+':
- value = PLUSPLUS; goto done;
- case '-':
- value = MINUSMINUS; goto done;
- case '&':
- value = ANDAND; goto done;
- case '|':
- value = OROR; goto done;
- case '<':
- c = LSHIFT;
- goto combine;
- case '>':
- c = RSHIFT;
- goto combine;
- }
- else if ((c == '-') && (c1 == '>'))
- { value = POINTSAT; goto done; }
- ungetc (c1, finput);
- token_buffer[1] = 0;
-
- if ((c == '<') || (c == '>'))
- value = ARITHCOMPARE;
- else value = c;
- goto done;
- }
-
- case 0:
- /* Don't make yyparse think this is eof. */
- value = 1;
- break;
-
- default:
- value = c;
- }
-
-done:
-/* yylloc.last_line = lineno; */
-
- return value;
-}
-
-/* Sets the value of the 'yydebug' variable to VALUE.
- This is a function so we don't have to have YYDEBUG defined
- in order to build the compiler. */
-
-void
-set_yydebug (value)
- int value;
-{
-#if YYDEBUG != 0
- yydebug = value;
-#else
- warning ("YYDEBUG not defined.");
-#endif
-}
diff --git a/gnu/gcc2/cc1/c-parse.c b/gnu/gcc2/cc1/c-parse.c
deleted file mode 100644
index fb86c886faf7..000000000000
--- a/gnu/gcc2/cc1/c-parse.c
+++ /dev/null
@@ -1,3435 +0,0 @@
-
-/* A Bison parser, made from c-parse.y */
-
-#define YYBISON 1 /* Identify Bison output. */
-
-#define IDENTIFIER 258
-#define TYPENAME 259
-#define SCSPEC 260
-#define TYPESPEC 261
-#define TYPE_QUAL 262
-#define CONSTANT 263
-#define STRING 264
-#define ELLIPSIS 265
-#define SIZEOF 266
-#define ENUM 267
-#define STRUCT 268
-#define UNION 269
-#define IF 270
-#define ELSE 271
-#define WHILE 272
-#define DO 273
-#define FOR 274
-#define SWITCH 275
-#define CASE 276
-#define DEFAULT 277
-#define BREAK 278
-#define CONTINUE 279
-#define RETURN 280
-#define GOTO 281
-#define ASM_KEYWORD 282
-#define TYPEOF 283
-#define ALIGNOF 284
-#define ALIGN 285
-#define ATTRIBUTE 286
-#define EXTENSION 287
-#define LABEL 288
-#define REALPART 289
-#define IMAGPART 290
-#define ASSIGN 291
-#define OROR 292
-#define ANDAND 293
-#define EQCOMPARE 294
-#define ARITHCOMPARE 295
-#define LSHIFT 296
-#define RSHIFT 297
-#define UNARY 298
-#define PLUSPLUS 299
-#define MINUSMINUS 300
-#define HYPERUNARY 301
-#define POINTSAT 302
-#define INTERFACE 303
-#define IMPLEMENTATION 304
-#define END 305
-#define SELECTOR 306
-#define DEFS 307
-#define ENCODE 308
-#define CLASSNAME 309
-#define PUBLIC 310
-#define PRIVATE 311
-#define PROTECTED 312
-#define PROTOCOL 313
-#define OBJECTNAME 314
-#define CLASS 315
-#define ALIAS 316
-#define OBJC_STRING 317
-
-#line 44 "c-parse.y"
-
-#include <stdio.h>
-#include <errno.h>
-#include <setjmp.h>
-
-#include "config.h"
-#include "tree.h"
-#include "input.h"
-#include "c-lex.h"
-#include "c-tree.h"
-#include "flags.h"
-
-#ifdef MULTIBYTE_CHARS
-#include <stdlib.h>
-#include <locale.h>
-#endif
-
-
-/* Since parsers are distinct for each language, put the language string
- definition here. */
-char *language_string = "GNU C";
-
-#ifndef errno
-extern int errno;
-#endif
-
-void yyerror ();
-
-/* Like YYERROR but do call yyerror. */
-#define YYERROR1 { yyerror ("syntax error"); YYERROR; }
-
-/* Cause the `yydebug' variable to be defined. */
-#define YYDEBUG 1
-
-#line 81 "c-parse.y"
-typedef union {long itype; tree ttype; enum tree_code code;
- char *filename; int lineno; } YYSTYPE;
-#line 192 "c-parse.y"
-
-/* Number of statements (loosely speaking) seen so far. */
-static int stmt_count;
-
-/* Input file and line number of the end of the body of last simple_if;
- used by the stmt-rule immediately after simple_if returns. */
-static char *if_stmt_file;
-static int if_stmt_line;
-
-/* List of types and structure classes of the current declaration. */
-static tree current_declspecs;
-
-/* Stack of saved values of current_declspecs. */
-static tree declspec_stack;
-
-/* 1 if we explained undeclared var errors. */
-static int undeclared_variable_notice;
-
-
-/* Tell yyparse how to print a token's value, if yydebug is set. */
-
-#define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
-extern void yyprint ();
-
-#ifndef YYLTYPE
-typedef
- struct yyltype
- {
- int timestamp;
- int first_line;
- int first_column;
- int last_line;
- int last_column;
- char *text;
- }
- yyltype;
-
-#define YYLTYPE yyltype
-#endif
-
-#include <stdio.h>
-
-#ifndef __STDC__
-#define const
-#endif
-
-
-
-#define YYFINAL 613
-#define YYFLAG -32768
-#define YYNTBASE 85
-
-#define YYTRANSLATE(x) ((unsigned)(x) <= 317 ? yytranslate[x] : 212)
-
-static const char yytranslate[] = { 0,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 81, 2, 2, 2, 53, 44, 2, 60,
- 77, 51, 49, 82, 50, 59, 52, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 39, 78, 2,
- 37, 2, 38, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 61, 2, 84, 43, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 83, 42, 79, 80, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 1, 2, 3, 4, 5,
- 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
- 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
- 36, 40, 41, 45, 46, 47, 48, 54, 55, 56,
- 57, 58, 62, 63, 64, 65, 66, 67, 68, 69,
- 70, 71, 72, 73, 74, 75, 76
-};
-
-static const short yyprhs[] = { 0,
- 0, 1, 3, 4, 7, 8, 12, 14, 16, 22,
- 26, 31, 36, 39, 42, 45, 48, 50, 51, 52,
- 60, 65, 66, 67, 75, 80, 81, 82, 89, 93,
- 95, 97, 99, 101, 103, 105, 107, 109, 111, 113,
- 114, 116, 118, 122, 124, 127, 128, 132, 135, 138,
- 141, 146, 149, 154, 157, 160, 162, 167, 175, 177,
- 181, 185, 189, 193, 197, 201, 205, 209, 213, 217,
- 221, 225, 229, 233, 239, 243, 247, 249, 251, 253,
- 257, 261, 262, 267, 272, 277, 281, 285, 288, 291,
- 293, 296, 297, 299, 302, 306, 308, 310, 313, 316,
- 321, 326, 329, 332, 336, 338, 340, 343, 346, 347,
- 352, 357, 361, 365, 368, 371, 374, 378, 379, 382,
- 385, 387, 389, 392, 395, 398, 402, 403, 406, 408,
- 410, 412, 417, 422, 424, 426, 428, 430, 434, 436,
- 440, 441, 446, 447, 454, 458, 459, 466, 470, 471,
- 478, 480, 484, 486, 491, 496, 505, 507, 510, 514,
- 519, 521, 523, 527, 534, 543, 548, 555, 559, 565,
- 566, 570, 571, 575, 577, 579, 583, 587, 592, 596,
- 600, 602, 606, 611, 615, 619, 621, 625, 629, 633,
- 638, 642, 644, 645, 652, 657, 660, 661, 668, 673,
- 676, 677, 685, 686, 693, 696, 697, 699, 700, 702,
- 704, 707, 708, 712, 715, 719, 721, 725, 727, 729,
- 731, 735, 740, 747, 753, 755, 759, 761, 765, 768,
- 771, 772, 774, 776, 779, 780, 783, 787, 791, 794,
- 798, 803, 807, 810, 814, 817, 819, 822, 825, 826,
- 828, 831, 832, 833, 835, 837, 840, 844, 846, 849,
- 852, 859, 865, 871, 874, 877, 882, 883, 888, 889,
- 890, 894, 899, 903, 905, 907, 909, 911, 914, 915,
- 920, 922, 926, 927, 928, 936, 942, 945, 946, 947,
- 948, 961, 962, 969, 972, 975, 978, 982, 989, 998,
- 1009, 1022, 1026, 1031, 1033, 1035, 1036, 1043, 1047, 1053,
- 1056, 1059, 1060, 1062, 1063, 1065, 1066, 1068, 1070, 1074,
- 1079, 1081, 1085, 1086, 1089, 1092, 1093, 1098, 1101, 1102,
- 1104, 1106, 1110, 1112, 1116, 1119, 1122, 1125, 1128, 1131,
- 1132, 1135, 1137, 1140, 1142, 1146, 1148
-};
-
-static const short yyrhs[] = { -1,
- 86, 0, 0, 87, 89, 0, 0, 86, 88, 89,
- 0, 91, 0, 90, 0, 27, 60, 100, 77, 78,
- 0, 116, 126, 78, 0, 120, 116, 126, 78, 0,
- 118, 116, 125, 78, 0, 120, 78, 0, 118, 78,
- 0, 1, 78, 0, 1, 79, 0, 78, 0, 0,
- 0, 118, 116, 141, 92, 110, 93, 171, 0, 118,
- 116, 141, 1, 0, 0, 0, 120, 116, 144, 94,
- 110, 95, 171, 0, 120, 116, 144, 1, 0, 0,
- 0, 116, 144, 96, 110, 97, 171, 0, 116, 144,
- 1, 0, 3, 0, 4, 0, 44, 0, 50, 0,
- 49, 0, 55, 0, 56, 0, 80, 0, 81, 0,
- 102, 0, 0, 102, 0, 106, 0, 102, 82, 106,
- 0, 107, 0, 51, 105, 0, 0, 32, 104, 105,
- 0, 99, 105, 0, 41, 98, 0, 11, 103, 0,
- 11, 60, 159, 77, 0, 29, 103, 0, 29, 60,
- 159, 77, 0, 34, 105, 0, 35, 105, 0, 103,
- 0, 60, 159, 77, 105, 0, 60, 159, 77, 83,
- 136, 150, 79, 0, 105, 0, 106, 49, 106, 0,
- 106, 50, 106, 0, 106, 51, 106, 0, 106, 52,
- 106, 0, 106, 53, 106, 0, 106, 47, 106, 0,
- 106, 48, 106, 0, 106, 46, 106, 0, 106, 45,
- 106, 0, 106, 44, 106, 0, 106, 42, 106, 0,
- 106, 43, 106, 0, 106, 41, 106, 0, 106, 40,
- 106, 0, 106, 38, 195, 39, 106, 0, 106, 37,
- 106, 0, 106, 36, 106, 0, 3, 0, 8, 0,
- 109, 0, 60, 100, 77, 0, 60, 1, 77, 0,
- 0, 60, 108, 172, 77, 0, 107, 60, 101, 77,
- 0, 107, 61, 100, 84, 0, 107, 59, 98, 0,
- 107, 58, 98, 0, 107, 55, 0, 107, 56, 0,
- 9, 0, 109, 9, 0, 0, 112, 0, 112, 10,
- 0, 177, 178, 113, 0, 111, 0, 166, 0, 112,
- 111, 0, 111, 166, 0, 118, 116, 125, 78, 0,
- 120, 116, 126, 78, 0, 118, 78, 0, 120, 78,
- 0, 177, 178, 117, 0, 114, 0, 166, 0, 115,
- 114, 0, 114, 166, 0, 0, 118, 116, 125, 78,
- 0, 120, 116, 126, 78, 0, 118, 116, 137, 0,
- 120, 116, 139, 0, 118, 78, 0, 120, 78, 0,
- 123, 119, 0, 120, 123, 119, 0, 0, 119, 124,
- 0, 119, 5, 0, 7, 0, 5, 0, 120, 7,
- 0, 120, 5, 0, 123, 122, 0, 161, 123, 122,
- 0, 0, 122, 124, 0, 6, 0, 145, 0, 4,
- 0, 28, 60, 100, 77, 0, 28, 60, 159, 77,
- 0, 6, 0, 7, 0, 145, 0, 128, 0, 125,
- 82, 128, 0, 130, 0, 126, 82, 128, 0, 0,
- 27, 60, 109, 77, 0, 0, 141, 127, 132, 37,
- 129, 135, 0, 141, 127, 132, 0, 0, 144, 127,
- 132, 37, 131, 135, 0, 144, 127, 132, 0, 0,
- 31, 60, 60, 133, 77, 77, 0, 134, 0, 133,
- 82, 134, 0, 3, 0, 3, 60, 3, 77, 0,
- 3, 60, 8, 77, 0, 3, 60, 3, 82, 8,
- 82, 8, 77, 0, 106, 0, 83, 79, 0, 83,
- 136, 79, 0, 83, 136, 82, 79, 0, 1, 0,
- 135, 0, 136, 82, 135, 0, 61, 106, 10, 106,
- 84, 135, 0, 136, 82, 61, 106, 10, 106, 84,
- 135, 0, 61, 106, 84, 135, 0, 136, 82, 61,
- 106, 84, 135, 0, 98, 39, 135, 0, 136, 82,
- 98, 39, 135, 0, 0, 141, 138, 172, 0, 0,
- 144, 140, 172, 0, 142, 0, 144, 0, 60, 142,
- 77, 0, 142, 60, 207, 0, 142, 61, 100, 84,
- 0, 142, 61, 84, 0, 51, 162, 142, 0, 4,
- 0, 143, 60, 207, 0, 143, 61, 100, 84, 0,
- 143, 61, 84, 0, 51, 162, 143, 0, 4, 0,
- 144, 60, 207, 0, 60, 144, 77, 0, 51, 162,
- 144, 0, 144, 61, 100, 84, 0, 144, 61, 84,
- 0, 3, 0, 0, 13, 98, 83, 146, 152, 79,
- 0, 13, 83, 152, 79, 0, 13, 98, 0, 0,
- 14, 98, 83, 147, 152, 79, 0, 14, 83, 152,
- 79, 0, 14, 98, 0, 0, 12, 98, 83, 148,
- 157, 151, 79, 0, 0, 12, 83, 149, 157, 151,
- 79, 0, 12, 98, 0, 0, 82, 0, 0, 82,
- 0, 153, 0, 153, 154, 0, 0, 153, 154, 78,
- 0, 153, 78, 0, 121, 116, 155, 0, 121, 0,
- 161, 116, 155, 0, 161, 0, 1, 0, 156, 0,
- 155, 82, 156, 0, 177, 178, 141, 132, 0, 177,
- 178, 141, 39, 106, 132, 0, 177, 178, 39, 106,
- 132, 0, 158, 0, 157, 82, 158, 0, 98, 0,
- 98, 37, 106, 0, 121, 160, 0, 161, 160, 0,
- 0, 163, 0, 7, 0, 161, 7, 0, 0, 162,
- 7, 0, 60, 163, 77, 0, 51, 162, 163, 0,
- 51, 162, 0, 163, 60, 200, 0, 163, 61, 100,
- 84, 0, 163, 61, 84, 0, 60, 200, 0, 61,
- 100, 84, 0, 61, 84, 0, 180, 0, 164, 180,
- 0, 164, 166, 0, 0, 164, 0, 1, 78, 0,
- 0, 0, 169, 0, 170, 0, 169, 170, 0, 33,
- 211, 78, 0, 172, 0, 1, 172, 0, 83, 79,
- 0, 83, 167, 168, 115, 165, 79, 0, 83, 167,
- 168, 1, 79, 0, 83, 167, 168, 164, 79, 0,
- 174, 179, 0, 174, 1, 0, 15, 60, 100, 77,
- 0, 0, 18, 176, 179, 17, 0, 0, 0, 177,
- 178, 182, 0, 177, 178, 193, 179, 0, 177, 178,
- 181, 0, 182, 0, 193, 0, 172, 0, 190, 0,
- 100, 78, 0, 0, 173, 16, 183, 179, 0, 173,
- 0, 173, 16, 1, 0, 0, 0, 17, 184, 60,
- 100, 77, 185, 179, 0, 175, 60, 100, 77, 78,
- 0, 175, 1, 0, 0, 0, 0, 19, 60, 195,
- 78, 186, 195, 78, 187, 195, 77, 188, 179, 0,
- 0, 20, 60, 100, 77, 189, 179, 0, 23, 78,
- 0, 24, 78, 0, 25, 78, 0, 25, 100, 78,
- 0, 27, 194, 60, 100, 77, 78, 0, 27, 194,
- 60, 100, 39, 196, 77, 78, 0, 27, 194, 60,
- 100, 39, 196, 39, 196, 77, 78, 0, 27, 194,
- 60, 100, 39, 196, 39, 196, 39, 199, 77, 78,
- 0, 26, 98, 78, 0, 26, 51, 100, 78, 0,
- 78, 0, 191, 0, 0, 19, 60, 107, 77, 192,
- 179, 0, 21, 106, 39, 0, 21, 106, 10, 106,
- 39, 0, 22, 39, 0, 98, 39, 0, 0, 7,
- 0, 0, 100, 0, 0, 197, 0, 198, 0, 197,
- 82, 198, 0, 9, 60, 100, 77, 0, 109, 0,
- 199, 82, 109, 0, 0, 201, 202, 0, 204, 77,
- 0, 0, 205, 78, 203, 202, 0, 1, 77, 0,
- 0, 10, 0, 205, 0, 205, 82, 10, 0, 206,
- 0, 205, 82, 206, 0, 118, 143, 0, 118, 144,
- 0, 118, 160, 0, 120, 144, 0, 120, 160, 0,
- 0, 208, 209, 0, 202, 0, 210, 77, 0, 3,
- 0, 210, 82, 3, 0, 98, 0, 211, 82, 98,
- 0
-};
-
-#if YYDEBUG != 0
-static const short yyrline[] = { 0,
- 218, 222, 235, 237, 237, 238, 240, 242, 243, 253,
- 259, 261, 263, 265, 267, 268, 269, 274, 280, 282,
- 283, 285, 290, 292, 293, 295, 300, 302, 303, 307,
- 309, 312, 314, 316, 318, 320, 322, 324, 328, 332,
- 335, 338, 341, 345, 347, 350, 353, 356, 360, 386,
- 391, 393, 395, 397, 399, 403, 405, 408, 433, 435,
- 437, 439, 441, 443, 445, 447, 449, 451, 453, 455,
- 457, 459, 461, 463, 465, 468, 474, 575, 576, 578,
- 584, 586, 600, 618, 620, 622, 626, 632, 634, 639,
- 641, 646, 648, 649, 659, 664, 666, 667, 668, 671,
- 676, 680, 683, 691, 696, 698, 699, 700, 707, 715,
- 720, 724, 728, 732, 734, 742, 745, 749, 751, 753,
- 764, 768, 770, 773, 786, 789, 793, 795, 803, 804,
- 805, 809, 811, 817, 818, 819, 822, 824, 827, 829,
- 832, 835, 841, 846, 848, 854, 859, 861, 868, 871,
- 876, 878, 883, 888, 898, 909, 927, 929, 933, 935,
- 937, 943, 946, 951, 955, 960, 962, 964, 966, 970,
- 987, 991, 1008, 1015, 1017, 1022, 1025, 1030, 1032, 1034,
- 1036, 1044, 1050, 1052, 1054, 1056, 1062, 1068, 1070, 1072,
- 1074, 1076, 1079, 1084, 1088, 1091, 1093, 1095, 1097, 1100,
- 1102, 1105, 1108, 1111, 1114, 1118, 1120, 1123, 1125, 1129,
- 1132, 1137, 1139, 1141, 1155, 1161, 1166, 1171, 1176, 1180,
- 1182, 1186, 1190, 1194, 1204, 1206, 1211, 1214, 1218, 1221,
- 1225, 1228, 1231, 1234, 1238, 1241, 1245, 1249, 1251, 1253,
- 1255, 1257, 1259, 1261, 1263, 1271, 1273, 1274, 1277, 1279,
- 1282, 1285, 1296, 1298, 1303, 1305, 1308, 1322, 1325, 1328,
- 1330, 1335, 1340, 1348, 1353, 1356, 1369, 1377, 1381, 1385,
- 1389, 1395, 1399, 1404, 1406, 1417, 1420, 1421, 1426, 1431,
- 1434, 1442, 1444, 1454, 1464, 1465, 1473, 1476, 1488, 1492,
- 1509, 1516, 1525, 1527, 1532, 1537, 1541, 1545, 1556, 1563,
- 1570, 1577, 1588, 1592, 1595, 1600, 1623, 1654, 1678, 1706,
- 1721, 1732, 1735, 1739, 1742, 1747, 1749, 1752, 1754, 1758,
- 1763, 1766, 1772, 1777, 1782, 1784, 1793, 1794, 1800, 1802,
- 1807, 1809, 1813, 1816, 1822, 1825, 1827, 1829, 1831, 1838,
- 1843, 1848, 1850, 1859, 1862, 1867, 1870
-};
-
-static const char * const yytname[] = { "$","error","$illegal.","IDENTIFIER",
-"TYPENAME","SCSPEC","TYPESPEC","TYPE_QUAL","CONSTANT","STRING","ELLIPSIS","SIZEOF",
-"ENUM","STRUCT","UNION","IF","ELSE","WHILE","DO","FOR","SWITCH","CASE","DEFAULT",
-"BREAK","CONTINUE","RETURN","GOTO","ASM_KEYWORD","TYPEOF","ALIGNOF","ALIGN",
-"ATTRIBUTE","EXTENSION","LABEL","REALPART","IMAGPART","ASSIGN","'='","'?'","':'",
-"OROR","ANDAND","'|'","'^'","'&'","EQCOMPARE","ARITHCOMPARE","LSHIFT","RSHIFT",
-"'+'","'-'","'*'","'/'","'%'","UNARY","PLUSPLUS","MINUSMINUS","HYPERUNARY","POINTSAT",
-"'.'","'('","'['","INTERFACE","IMPLEMENTATION","END","SELECTOR","DEFS","ENCODE",
-"CLASSNAME","PUBLIC","PRIVATE","PROTECTED","PROTOCOL","OBJECTNAME","CLASS","ALIAS",
-"OBJC_STRING","')'","';'","'}'","'~'","'!'","','","'{'","']'","program","extdefs",
-"@1","@2","extdef","datadef","fndef","@3","@4","@5","@6","@7","@8","identifier",
-"unop","expr","exprlist","nonnull_exprlist","unary_expr","@9","cast_expr","expr_no_commas",
-"primary","@10","string","xdecls","lineno_datadecl","datadecls","datadecl","lineno_decl",
-"decls","setspecs","decl","typed_declspecs","reserved_declspecs","declmods",
-"typed_typespecs","reserved_typespecquals","typespec","typespecqual_reserved",
-"initdecls","notype_initdecls","maybeasm","initdcl","@11","notype_initdcl","@12",
-"maybe_attribute","attribute_list","attrib","init","initlist","nested_function",
-"@13","notype_nested_function","@14","declarator","after_type_declarator","parm_declarator",
-"notype_declarator","structsp","@15","@16","@17","@18","maybecomma","maybecomma_warn",
-"component_decl_list","component_decl_list2","component_decl","components","component_declarator",
-"enumlist","enumerator","typename","absdcl","nonempty_type_quals","type_quals",
-"absdcl1","stmts","xstmts","errstmt","pushlevel","maybe_label_decls","label_decls",
-"label_decl","compstmt_or_error","compstmt","simple_if","if_prefix","do_stmt_start",
-"@19","save_filename","save_lineno","lineno_labeled_stmt","lineno_stmt_or_label",
-"stmt_or_label","stmt","@20","@21","@22","@23","@24","@25","@26","all_iter_stmt",
-"all_iter_stmt_simple","@27","label","maybe_type_qual","xexpr","asm_operands",
-"nonnull_asm_operands","asm_operand","asm_clobbers","parmlist","@28","parmlist_1",
-"@29","parmlist_2","parms","parm","parmlist_or_identifiers","@30","parmlist_or_identifiers_1",
-"identifiers","identifiers_or_typenames",""
-};
-#endif
-
-static const short yyr1[] = { 0,
- 85, 85, 87, 86, 88, 86, 89, 89, 89, 90,
- 90, 90, 90, 90, 90, 90, 90, 92, 93, 91,
- 91, 94, 95, 91, 91, 96, 97, 91, 91, 98,
- 98, 99, 99, 99, 99, 99, 99, 99, 100, 101,
- 101, 102, 102, 103, 103, 104, 103, 103, 103, 103,
- 103, 103, 103, 103, 103, 105, 105, 105, 106, 106,
- 106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
- 106, 106, 106, 106, 106, 106, 107, 107, 107, 107,
- 107, 108, 107, 107, 107, 107, 107, 107, 107, 109,
- 109, 110, 110, 110, 111, 112, 112, 112, 112, 113,
- 113, 113, 113, 114, 115, 115, 115, 115, 116, 117,
- 117, 117, 117, 117, 117, 118, 118, 119, 119, 119,
- 120, 120, 120, 120, 121, 121, 122, 122, 123, 123,
- 123, 123, 123, 124, 124, 124, 125, 125, 126, 126,
- 127, 127, 129, 128, 128, 131, 130, 130, 132, 132,
- 133, 133, 134, 134, 134, 134, 135, 135, 135, 135,
- 135, 136, 136, 136, 136, 136, 136, 136, 136, 138,
- 137, 140, 139, 141, 141, 142, 142, 142, 142, 142,
- 142, 143, 143, 143, 143, 143, 144, 144, 144, 144,
- 144, 144, 146, 145, 145, 145, 147, 145, 145, 145,
- 148, 145, 149, 145, 145, 150, 150, 151, 151, 152,
- 152, 153, 153, 153, 154, 154, 154, 154, 154, 155,
- 155, 156, 156, 156, 157, 157, 158, 158, 159, 159,
- 160, 160, 161, 161, 162, 162, 163, 163, 163, 163,
- 163, 163, 163, 163, 163, 164, 164, 164, 165, 165,
- 166, 167, 168, 168, 169, 169, 170, 171, 171, 172,
- 172, 172, 172, 173, 173, 174, 176, 175, 177, 178,
- 179, 179, 180, 181, 181, 182, 182, 182, 183, 182,
- 182, 182, 184, 185, 182, 182, 182, 186, 187, 188,
- 182, 189, 182, 182, 182, 182, 182, 182, 182, 182,
- 182, 182, 182, 182, 190, 192, 191, 193, 193, 193,
- 193, 194, 194, 195, 195, 196, 196, 197, 197, 198,
- 199, 199, 201, 200, 202, 203, 202, 202, 204, 204,
- 204, 204, 205, 205, 206, 206, 206, 206, 206, 208,
- 207, 209, 209, 210, 210, 211, 211
-};
-
-static const short yyr2[] = { 0,
- 0, 1, 0, 2, 0, 3, 1, 1, 5, 3,
- 4, 4, 2, 2, 2, 2, 1, 0, 0, 7,
- 4, 0, 0, 7, 4, 0, 0, 6, 3, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
- 1, 1, 3, 1, 2, 0, 3, 2, 2, 2,
- 4, 2, 4, 2, 2, 1, 4, 7, 1, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 5, 3, 3, 1, 1, 1, 3,
- 3, 0, 4, 4, 4, 3, 3, 2, 2, 1,
- 2, 0, 1, 2, 3, 1, 1, 2, 2, 4,
- 4, 2, 2, 3, 1, 1, 2, 2, 0, 4,
- 4, 3, 3, 2, 2, 2, 3, 0, 2, 2,
- 1, 1, 2, 2, 2, 3, 0, 2, 1, 1,
- 1, 4, 4, 1, 1, 1, 1, 3, 1, 3,
- 0, 4, 0, 6, 3, 0, 6, 3, 0, 6,
- 1, 3, 1, 4, 4, 8, 1, 2, 3, 4,
- 1, 1, 3, 6, 8, 4, 6, 3, 5, 0,
- 3, 0, 3, 1, 1, 3, 3, 4, 3, 3,
- 1, 3, 4, 3, 3, 1, 3, 3, 3, 4,
- 3, 1, 0, 6, 4, 2, 0, 6, 4, 2,
- 0, 7, 0, 6, 2, 0, 1, 0, 1, 1,
- 2, 0, 3, 2, 3, 1, 3, 1, 1, 1,
- 3, 4, 6, 5, 1, 3, 1, 3, 2, 2,
- 0, 1, 1, 2, 0, 2, 3, 3, 2, 3,
- 4, 3, 2, 3, 2, 1, 2, 2, 0, 1,
- 2, 0, 0, 1, 1, 2, 3, 1, 2, 2,
- 6, 5, 5, 2, 2, 4, 0, 4, 0, 0,
- 3, 4, 3, 1, 1, 1, 1, 2, 0, 4,
- 1, 3, 0, 0, 7, 5, 2, 0, 0, 0,
- 12, 0, 6, 2, 2, 2, 3, 6, 8, 10,
- 12, 3, 4, 1, 1, 0, 6, 3, 5, 2,
- 2, 0, 1, 0, 1, 0, 1, 1, 3, 4,
- 1, 3, 0, 2, 2, 0, 4, 2, 0, 1,
- 1, 3, 1, 3, 2, 2, 2, 2, 2, 0,
- 2, 1, 2, 1, 3, 1, 3
-};
-
-static const short yydefact[] = { 3,
- 5, 0, 0, 0, 131, 122, 129, 121, 0, 0,
- 0, 0, 0, 17, 4, 8, 7, 0, 109, 109,
- 118, 130, 6, 15, 16, 30, 31, 203, 205, 212,
- 196, 212, 200, 0, 0, 192, 235, 0, 0, 139,
- 0, 14, 0, 124, 123, 13, 0, 118, 116, 0,
- 201, 0, 0, 193, 0, 197, 77, 78, 90, 0,
- 0, 46, 0, 0, 0, 32, 34, 33, 0, 35,
- 36, 0, 37, 38, 0, 0, 39, 56, 59, 42,
- 44, 79, 233, 0, 231, 127, 0, 231, 0, 0,
- 10, 0, 29, 0, 340, 0, 0, 149, 181, 235,
- 0, 0, 137, 0, 174, 175, 0, 0, 117, 120,
- 134, 135, 119, 136, 227, 208, 225, 0, 195, 219,
- 214, 109, 211, 109, 212, 199, 212, 0, 50, 0,
- 52, 0, 54, 55, 49, 45, 0, 0, 0, 0,
- 48, 0, 0, 0, 0, 314, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 88, 89, 0, 0, 40, 0, 91, 132, 235, 323,
- 0, 229, 232, 125, 133, 234, 127, 230, 236, 189,
- 188, 140, 141, 0, 187, 0, 191, 0, 0, 27,
- 0, 269, 97, 270, 0, 148, 0, 0, 12, 0,
- 21, 0, 149, 340, 0, 11, 25, 0, 0, 209,
- 0, 208, 269, 213, 269, 0, 0, 0, 0, 47,
- 81, 80, 252, 0, 0, 9, 43, 76, 75, 315,
- 0, 73, 72, 70, 71, 69, 68, 67, 65, 66,
- 60, 61, 62, 63, 64, 87, 86, 0, 41, 0,
- 239, 0, 243, 0, 245, 0, 323, 0, 128, 126,
- 0, 0, 344, 330, 231, 231, 342, 0, 331, 333,
- 341, 0, 190, 251, 0, 99, 94, 98, 0, 0,
- 146, 180, 176, 138, 19, 145, 177, 179, 0, 23,
- 228, 226, 204, 0, 215, 220, 270, 217, 194, 198,
- 51, 53, 260, 253, 83, 0, 57, 0, 84, 85,
- 238, 237, 324, 244, 240, 242, 0, 142, 328, 186,
- 235, 323, 335, 336, 337, 235, 338, 339, 325, 326,
- 0, 343, 0, 0, 28, 258, 95, 109, 109, 0,
- 0, 0, 143, 178, 0, 202, 269, 0, 0, 0,
- 254, 255, 161, 77, 0, 0, 0, 157, 162, 206,
- 74, 241, 239, 340, 0, 239, 0, 332, 334, 345,
- 259, 102, 0, 103, 0, 153, 0, 151, 147, 20,
- 0, 24, 221, 0, 149, 346, 0, 0, 0, 269,
- 0, 106, 270, 246, 256, 0, 158, 0, 0, 0,
- 0, 185, 182, 184, 0, 327, 0, 0, 141, 0,
- 0, 0, 144, 149, 0, 222, 257, 0, 262, 108,
- 107, 0, 0, 263, 248, 270, 247, 0, 0, 0,
- 159, 0, 168, 0, 0, 163, 58, 183, 100, 101,
- 0, 0, 150, 152, 224, 149, 347, 261, 0, 131,
- 0, 283, 267, 0, 0, 0, 0, 0, 0, 0,
- 0, 312, 304, 0, 0, 104, 109, 109, 276, 281,
- 0, 0, 273, 274, 277, 305, 275, 0, 166, 160,
- 0, 0, 154, 0, 155, 223, 0, 0, 269, 314,
- 0, 0, 310, 294, 295, 296, 0, 0, 0, 313,
- 0, 311, 278, 114, 0, 115, 0, 0, 265, 270,
- 264, 287, 0, 0, 0, 0, 169, 0, 0, 0,
- 0, 44, 0, 0, 0, 308, 297, 0, 302, 0,
- 0, 112, 141, 0, 113, 141, 282, 269, 0, 0,
- 164, 0, 167, 0, 266, 0, 268, 306, 288, 292,
- 0, 303, 0, 110, 0, 111, 0, 280, 271, 269,
- 0, 0, 0, 284, 269, 314, 269, 309, 316, 0,
- 171, 173, 272, 286, 165, 156, 269, 307, 0, 293,
- 0, 0, 317, 318, 298, 285, 289, 0, 316, 0,
- 0, 314, 0, 0, 299, 319, 0, 320, 0, 0,
- 290, 321, 0, 300, 269, 0, 0, 291, 301, 322,
- 0, 0, 0
-};
-
-static const short yydefgoto[] = { 611,
- 1, 2, 3, 15, 16, 17, 202, 342, 208, 345,
- 97, 275, 115, 75, 230, 248, 77, 78, 132, 79,
- 80, 81, 139, 82, 190, 191, 192, 337, 389, 390,
- 18, 466, 265, 49, 266, 85, 174, 21, 113, 102,
- 39, 98, 103, 381, 40, 341, 196, 377, 378, 359,
- 360, 532, 555, 535, 557, 183, 105, 323, 106, 22,
- 125, 127, 118, 50, 401, 211, 52, 53, 123, 295,
- 296, 116, 117, 87, 172, 88, 89, 173, 391, 423,
- 193, 304, 350, 351, 352, 335, 336, 470, 471, 472,
- 489, 510, 279, 511, 394, 473, 474, 538, 488, 577,
- 566, 592, 605, 567, 475, 476, 565, 477, 501, 231,
- 582, 583, 584, 603, 253, 254, 267, 367, 268, 269,
- 270, 185, 186, 271, 272, 387
-};
-
-static const short yypact[] = { 49,
- 95, 710, 710, 262,-32768,-32768,-32768,-32768, 64, 66,
- 70, 60, 86,-32768,-32768,-32768,-32768, 33, -36, 332,
--32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768, 65,-32768,
- 79,-32768, 128, 1837, 1753,-32768,-32768, 33, 94,-32768,
- 391,-32768, 444,-32768,-32768,-32768, 33,-32768, 312, 68,
--32768, 141, 154,-32768, 144,-32768,-32768,-32768,-32768, 1850,
- 1900,-32768, 1837, 1837, 68,-32768,-32768,-32768, 1837,-32768,
--32768, 1032,-32768,-32768, 1837, 165, 169,-32768,-32768, 2059,
- 637, 247,-32768, 188, 187,-32768, 191, 951, 356, 0,
--32768, 444,-32768, 211,-32768, 1379, 529, 245,-32768,-32768,
- 444, 153,-32768, 273, 297, 308, 176, 486, 312,-32768,
--32768,-32768,-32768,-32768, 244, 202,-32768, 68,-32768,-32768,
--32768, 311, 224, 215,-32768,-32768,-32768, 1032,-32768, 1032,
--32768, 1837,-32768,-32768,-32768,-32768, 228, 231, 251, 243,
--32768, 265, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837,
- 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837, 1837,
--32768,-32768, 68, 68, 1837, 1837,-32768,-32768,-32768, 187,
- 1392,-32768, 352, 538,-32768,-32768,-32768,-32768,-32768, 308,
--32768,-32768, 321, 362,-32768, 632,-32768, 307, 322,-32768,
- 360, 42,-32768,-32768, 346, 377, 263, 4,-32768, 444,
--32768, 529, 245,-32768, 1446,-32768,-32768, 529, 1837, 68,
- 341, 202,-32768,-32768,-32768, 344, 350, 354, 357,-32768,
--32768,-32768, 376, 373, 1695,-32768, 2059, 2059, 2059,-32768,
- 400, 2072, 1299, 2083, 1875, 2092, 1485, 459, 432, 432,
- 328, 328,-32768,-32768,-32768,-32768,-32768, 383, 169, 379,
- 114, 109,-32768, 789,-32768, 393,-32768, 1459,-32768, 538,
- 24, 420,-32768,-32768, 222, 875,-32768, 424, 181,-32768,
--32768, 101,-32768,-32768, 40,-32768,-32768,-32768, 926, 443,
--32768, 297,-32768,-32768,-32768, 485,-32768,-32768, 442,-32768,
- 2059,-32768,-32768, 448, 447,-32768,-32768, 447,-32768,-32768,
--32768,-32768,-32768, 498,-32768, 1273,-32768, 1837,-32768,-32768,
- 352,-32768,-32768,-32768,-32768,-32768, 454,-32768,-32768,-32768,
--32768, 261, 411, 308,-32768,-32768, 308,-32768,-32768,-32768,
- 1104,-32768, 536, 251,-32768,-32768,-32768, 462, 371, 545,
- 1329, 40,-32768,-32768, 40,-32768,-32768, 405, 68, 650,
- 498,-32768,-32768, 510, 1837, 1090, 514, 2059,-32768, 473,
- 1669,-32768, 103,-32768, 1513, 237, 789,-32768,-32768,-32768,
--32768,-32768, 444,-32768, 33, 496, 110,-32768,-32768,-32768,
- 1329,-32768,-32768, 1837, 111,-32768, 225, 410, 569, 479,
- 731,-32768,-32768,-32768,-32768, 1926,-32768, 26, 1329, 1151,
- 480, 411,-32768,-32768, 481,-32768, 250, 304, 235, 177,
- 489, 545,-32768, 2016, 1837,-32768,-32768, 68,-32768,-32768,
--32768, 812, 484,-32768,-32768,-32768,-32768, 1595, 1837, 1329,
--32768, 1212,-32768, 1837, 528,-32768,-32768,-32768,-32768,-32768,
- 157, 502,-32768,-32768,-32768, 2016,-32768,-32768, 1645, 546,
- 539,-32768,-32768, 540, 542, 1837, 566, 531, 533, 1787,
- 52, 599,-32768, 568, 537,-32768, 543, 845,-32768, 598,
- 893, 30,-32768,-32768,-32768,-32768,-32768, 1971,-32768,-32768,
- 1947, 1329,-32768, 608,-32768,-32768, 1837, 557,-32768, 1837,
- 1837, 1539,-32768,-32768,-32768,-32768, 544, 1837, 548,-32768,
- 563,-32768,-32768,-32768, 444,-32768, 33, 974,-32768,-32768,
--32768,-32768, 1837, 1329, 1837, 1329,-32768, 549, 550, 1837,
- 611, 460, 552, 555, 1837,-32768,-32768, 556,-32768, 1837,
- 358,-32768, 21, 388,-32768, 230,-32768,-32768, 1645, 564,
--32768, 1992,-32768, 635,-32768, 589,-32768,-32768,-32768,-32768,
- 2041,-32768, 15,-32768, 251,-32768, 251,-32768,-32768,-32768,
- 562, 1329, 603,-32768,-32768, 1837,-32768,-32768, 672, 605,
--32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768, 609,-32768,
- 626, 20, 606,-32768,-32768,-32768,-32768, 1837, 672, 612,
- 672, 1837, 625, 39,-32768,-32768, 627,-32768, 362, 629,
--32768, 247, 168,-32768,-32768, 630, 362,-32768,-32768, 247,
- 689, 703,-32768
-};
-
-static const short yypgoto[] = {-32768,
--32768,-32768,-32768, 709,-32768,-32768,-32768,-32768,-32768,-32768,
--32768,-32768, -7,-32768, -34,-32768, 553, 464,-32768, -18,
- 46, 229,-32768, -175, -117, 534,-32768,-32768, 330,-32768,
- -9,-32768, 10, 673, 13, 674, 559, -6, -124, -346,
- -40, -96, -55,-32768,-32768,-32768, -177,-32768, 313, -301,
- 385,-32768,-32768,-32768,-32768, -37, -62, 366, -13, -30,
--32768,-32768,-32768,-32768,-32768, 532, 3,-32768,-32768, 530,
- 396, 641, 554, -19, -56, 694, -80, -149, 372,-32768,
- -173,-32768,-32768,-32768, 416, -259, -122,-32768,-32768,-32768,
--32768, -75, -274, -426, -347,-32768, 232,-32768,-32768,-32768,
--32768,-32768,-32768,-32768,-32768,-32768,-32768, 234,-32768, -466,
- 179,-32768, 178,-32768, 517,-32768, -224,-32768,-32768,-32768,
- 445, -176,-32768,-32768,-32768,-32768
-};
-
-
-#define YYLAST 2145
-
-
-static const short yytable[] = { 76,
- 84, 29, 31, 33, 41, 104, 107, 203, 261, 43,
- 47, 19, 19, 48, 20, 20, 224, 276, 114, 197,
- 252, 194, 348, 523, 90, 286, 407, 287, 86, 313,
- 512, 178, 167, 108, 55, 36, 182, 138, 198, 379,
- 334, 42, -93, 427, 133, 134, 86, 94, -1, 259,
- 136, 277, 140, 569, 26, 27, 141, 135, 589, 95,
- 96, 188, 521, 204, 205, 86, 26, 27, 26, 27,
- 26, 27, 26, 27, 427, 180, 181, 599, 114, 413,
- 283, 177, 380, 37, 285, 382, 203, 90, 251, 513,
- 290, 570, 38, 138, -2, 138, 590, 433, 436, 579,
- 318, 311, 498, -170, 431, 36, 320, 432, 218, 179,
- 219, 558, 213, 220, 215, 600, 194, 177, 428, 34,
- 179, 86, 223, 86, -93, 597, 194, 216, 479, 217,
- 436, 250, 194, 573, 282, 259, 256, 297, 578, 297,
- 580, 195, 406, 114, 284, 35, 28, 51, 30, 415,
- 586, 449, 32, 321, 120, 246, 247, 5, 531, 7,
- 83, 54, 322, 171, 169, 9, 10, 11, 257, 258,
- 289, 91, 252, 170, 171, 92, 392, 332, 608, 441,
- 517, 13, 333, 180, 442, 312, 411, 403, 227, 228,
- 229, 412, 232, 233, 234, 235, 236, 237, 238, 239,
- 240, 241, 242, 243, 244, 245, 307, 416, 325, 328,
- 56, 371, 541, 311, 543, 420, 311, 425, 5, 119,
- 7, 176, 126, 317, 36, 320, 9, 10, 11, 114,
- 199, 121, -210, 483, 200, 539, 445, 169, 484, 36,
- 363, 142, 13, 179, 606, 366, 170, 171, 425, 607,
- 143, 324, 327, 206, 291, 167, 94, 92, 330, 48,
- 575, 94, 331, 36, 168, 36, 99, 175, 486, 179,
- 184, 297, 321, 201, 393, 195, -18, -18, -18, -18,
- 209, 322, 171, 210, -18, -18, -18, 326, 338, 95,
- 96, 339, -218, -218, 95, 96, 322, 171, 357, 94,
- -18, 214, 417, -141, 221, 469, 418, 222, 90, -141,
- 385, 326, -172, 100, 393, 426, 110, 111, 112, 225,
- 322, 171, 101, 9, 10, 11, 469, 439, 373, 375,
- 405, 200, 48, 223, 408, 5, 44, 7, 45, 24,
- 25, 386, 226, 9, 10, 11, 426, 94, 357, 180,
- -141, 358, 180, 361, -141, -18, 204, 205, 36, 13,
- 189, 409, 179, -96, -96, -96, -96, 95, 96, -96,
- 59, -96, -96, -96, 5, 44, 7, 45, 158, 159,
- 160, 440, 9, 10, 11, 92, 358, -96, -216, -216,
- 273, 93, 435, 465, -26, -26, -26, -26, 13, 274,
- 396, 358, -26, -26, -26, 280, 37, 36, 99, 46,
- 447, 257, 258, 281, 465, 38, 469, 94, -26, 293,
- 464, -141, 299, 602, 435, 497, 358, -141, 300, 414,
- 301, 610, 571, 302, 572, 554, 203, 467, 308, 200,
- 468, 464, -96, 384, 358, 358, 36, 99, 374, 305,
- 95, 96, 519, 499, 303, 100, 524, 505, 507, 309,
- 446, 48, 310, 528, 101, 556, 534, 533, -141, 92,
- 364, 365, -141, -26, 478, 358, 314, 358, 540, 481,
- 156, 157, 158, 159, 160, 546, 207, 274, 419, -22,
- -22, -22, -22, 536, 100, 553, 319, -22, -22, -22,
- 329, 492, 340, 101, 465, 154, 155, 156, 157, 158,
- 159, 160, 94, -22, 161, 162, -141, 163, 164, 165,
- 166, 343, -141, 129, 131, 344, 346, 358, 347, 189,
- 349, 464, -269, -269, -269, -269, 548, 362, 370, 372,
- -269, -269, -269, 111, 112, 95, 96, 376, -30, 9,
- 10, 11, 399, 593, 400, 410, -269, -249, 437, 358,
- 542, 358, 448, -141, 438, 443, 482, -141, -22, 189,
- 551, -105, -105, -105, -105, -105, -105, -105, 485, -105,
- -105, -105, -105, -105, -31, -105, -105, -105, -105, -105,
- -105, -105, -105, -105, -105, -105, -105, -105, 487, 490,
- -105, 491, -105, -105, 493, 500, 502, 358, 494, -105,
- 495, -92, -105, 508, 503, 518, 520, -105, -105, -105,
- 504, 527, 530, -105, -105, 529, 545, 547, -105, 549,
- 544, 550, 262, 552, 263, 5, 6, 7, 8, 574,
- 561, 264, 563, 9, 10, 11, -105, -105, -105, -105,
- 388, -105, -269, -269, -269, -269, -269, -269, -269, 13,
- -269, -269, -269, -269, -269, 564, -269, -269, -269, -269,
- -269, -269, -269, -269, -269, -269, -269, -269, -269, 576,
- 581, -269, 585, -269, -269, 588, 587, 591, 612, 595,
- -269, 161, 162, -269, 163, 164, 165, 166, -269, -269,
- -269, 598, 613, 601, -269, -269, 604, 609, -329, -269,
- 4, 23, -109, 5, 6, 7, 8, 249, 522, 421,
- 109, 9, 10, 11, 444, 278, 122, -269, 402, -269,
- -269, 189, -269, -269, -269, 260, 12, 13, -269, -269,
- 398, -269, 383, 294, 298, -269, 124, -269, -269, -269,
- -269, -269, -269, -269, -269, -269, -269, -269, 212, -269,
- -109, 422, -269, 292, -269, -269, 395, 594, 596, -109,
- 559, -269, 560, 315, -269, 369, 0, 0, 0, -269,
- -269, -269, 0, 0, 0, -269, -269, 14, 0, 262,
- -269, 0, 5, 6, 7, 8, 0, 0, 264, 0,
- 9, 10, 11, 0, 0, 0, 0, 0, -269, 424,
- -269, -269, 189, -269, -269, -269, 13, 0, 0, -269,
- -269, 0, -269, 0, 0, 0, -269, 0, -269, -269,
- -269, -269, -269, -269, -269, -269, -269, -269, -269, 0,
- -269, 0, 0, -269, 0, -269, -269, 0, 5, 44,
- 7, 45, -269, 0, 0, -269, 9, 10, 11, 0,
- -269, -269, -269, 0, 0, -329, -269, -269, 0, 0,
- 0, -269, 13, 0, 0, 0, 0, 36, 5, 44,
- 7, 45, 0, 0, 0, 0, 9, 10, 11, -269,
- -250, -269, -269, 509, -269, -269, -269, 0, 0, 0,
- -269, -269, 13, -269, 0, 0, 0, -269, 0, -269,
- -269, -269, -269, -269, -269, -269, -269, -269, -269, -269,
- 0, -269, 506, 0, -269, 326, -269, -269, 0, 5,
- 6, 7, 8, -269, 322, 171, -269, 9, 10, 11,
- 0, -269, -269, -269, 0, 0, 0, -269, -269, 0,
- 0, 0, -269, 13, 5, 0, 7, 176, 0, 0,
- 0, 0, 9, 10, 11, 0, 0, 0, 0, 0,
- -269, 0, -269, -269, 537, -269, -279, -279, 13, 0,
- 0, -279, -279, 0, -279, 0, 0, 0, -279, 0,
- -279, -279, -279, -279, -279, -279, -279, -279, -279, -279,
- -279, 169, -279, 0, 0, -279, 0, -279, -279, 0,
- 170, 171, 0, 0, -279, 0, 0, -279, 0, 0,
- 0, 0, -279, -279, -279, 0, 0, 0, -279, -279,
- 0, 0, 137, -279, 57, 5, 0, 7, 83, 58,
- 59, 0, 60, 9, 10, 11, 0, 0, 0, 0,
- 0, -279, 0, -279, -279, 0, -279, 0, 0, 13,
- 61, 0, 0, 62, 0, 63, 64, 0, 0, 0,
- 0, 0, 65, 0, 0, 66, 0, 0, 0, 0,
- 67, 68, 69, 0, 0, 0, 70, 71, 0, 0,
- 353, 72, 354, 27, 0, 0, 0, 58, 59, 0,
- 60, 0, 0, 0, 0, 0, 0, 5, 6, 7,
- 8, 73, 74, 368, -82, 9, 10, 11, 61, 0,
- 0, 62, 0, 63, 64, 0, 0, 0, 0, 0,
- 65, 13, 0, 66, 0, 0, 0, 0, 67, 68,
- 69, 0, 0, 0, 70, 71, 0, 0, 0, 72,
- 355, 353, 0, 354, 27, 0, 0, 0, 58, 59,
- 0, 60, 0, 0, 0, 0, 0, 0, 397, 73,
- 74, 0, 356, 0, 0, 0, 0, 0, 0, 61,
- 0, 0, 62, 0, 63, 64, 0, 0, 0, 0,
- 0, 65, 0, 0, 66, 0, 0, 0, 0, 67,
- 68, 69, 0, 0, 0, 70, 71, 0, 0, 0,
- 72, 434, 353, 0, 354, 27, 0, 0, 0, 58,
- 59, 0, 60, 0, 0, 0, 0, 0, 0, -207,
- 73, 74, 0, 356, 0, 0, 0, 0, 0, 0,
- 61, 0, 0, 62, 0, 63, 64, 0, 0, 0,
- 0, 0, 65, 0, 0, 66, 0, 0, 0, 0,
- 67, 68, 69, 0, 0, 0, 70, 71, 0, 0,
- 0, 72, 434, 353, 0, 354, 27, 0, 0, 0,
- 58, 59, 0, 60, 0, 0, 0, 0, 0, 0,
- 480, 73, 74, 0, 356, 0, 0, 0, 0, 0,
- 0, 61, 0, 0, 62, 0, 63, 64, 0, 0,
- 0, 0, 0, 65, 0, 0, 66, 0, 0, 0,
- 0, 67, 68, 69, 0, 0, 0, 70, 71, 353,
- 0, 57, 72, 355, 0, 0, 58, 59, 0, 60,
- 149, 150, 151, 152, 153, 154, 155, 156, 157, 158,
- 159, 160, 73, 74, 0, 356, 0, 61, 0, 0,
- 62, 0, 63, 64, 0, 0, 0, 0, 0, 65,
- 0, 0, 66, 0, 0, 0, 0, 67, 68, 69,
- 0, 57, 0, 70, 71, 0, 58, 59, 72, 60,
- 0, 0, 0, 0, 57, 0, 0, 0, 0, 58,
- 59, 0, 60, 0, 0, 0, 0, 61, 73, 74,
- 62, 356, 63, 64, 0, 0, 0, 0, 0, 65,
- 61, 0, 66, 62, 0, 63, 64, 67, 68, 69,
- 0, 0, 65, 70, 71, 66, 0, 0, 72, 0,
- 67, 68, 69, 0, 0, 0, 70, 71, 57, 0,
- 0, 72, 0, 58, 59, 0, 60, 0, 73, 74,
- 0, 57, 187, 0, 0, 0, 58, 59, 0, 60,
- 0, 73, 74, 0, 61, 255, 0, 62, 0, 63,
- 64, 0, 0, 0, 0, 0, 65, 61, 0, 66,
- 62, 0, 63, 64, 67, 68, 69, 0, 0, 65,
- 70, 71, 66, 0, 0, 72, 0, 67, 68, 69,
- 0, 0, 0, 70, 71, 57, 0, 0, 72, 0,
- 58, 59, 0, 60, 0, 73, 74, 0, 0, 288,
- 153, 154, 155, 156, 157, 158, 159, 160, 73, 74,
- 0, 61, 316, 0, 62, 0, 63, 64, 525, 0,
- 0, 0, 0, 65, 0, 0, 66, 0, 0, 0,
- 0, 67, 68, 69, 0, 0, 0, 70, 71, 0,
- 0, 0, 72, 0, 144, 145, 146, 526, 147, 148,
- 149, 150, 151, 152, 153, 154, 155, 156, 157, 158,
- 159, 160, 73, 74, 0, 0, 404, 354, 450, 6,
- 7, 8, 58, 59, 0, 60, 9, 10, 11, 451,
- 0, 452, 453, 454, 455, 456, 457, 458, 459, 460,
- 461, 462, 13, 61, 0, 0, 62, 0, 63, 64,
- 0, 0, 0, 0, 0, 65, 0, 0, 66, 0,
- 0, 0, 0, 67, 68, 69, 0, 354, 27, 70,
- 71, 0, 58, 59, 72, 60, 0, 0, 0, 451,
- 0, 452, 453, 454, 455, 456, 457, 458, 459, 460,
- 461, 462, 463, 61, 73, 74, 62, 223, 63, 64,
- 0, 0, 0, 0, 0, 65, 0, 0, 66, 0,
- 0, 0, 0, 67, 68, 69, 0, 57, 0, 70,
- 71, 0, 58, 59, 72, 60, 146, 0, 147, 148,
- 149, 150, 151, 152, 153, 154, 155, 156, 157, 158,
- 159, 160, 463, 61, 73, 74, 62, 223, 63, 64,
- 0, 0, 0, 0, 0, 65, 0, 0, 66, 0,
- 0, 0, 0, 67, 68, 69, 0, 0, 0, 70,
- 71, 0, 0, 0, 72, 57, 5, 0, 7, 83,
- 58, 59, 0, 60, 9, 10, 11, 0, 0, 0,
- 0, 0, 0, 0, 73, 74, 0, 306, 0, 0,
- 13, 61, 0, 0, 62, 0, 63, 64, 0, 57,
- 0, 0, 0, 65, 58, 59, 66, 60, 0, 0,
- 0, 67, 68, 69, 0, 0, 0, 70, 71, 0,
- 0, 0, 72, 0, 0, 61, 0, 0, 62, 0,
- 63, 64, 0, 0, 0, 0, 0, 65, 0, 0,
- 66, 0, 73, 74, 0, 67, 68, 69, 0, 57,
- 0, 70, 71, 0, 58, 59, 72, 60, 0, 0,
- 0, 0, 57, 0, 0, 0, 0, 58, 59, 0,
- 60, 0, 0, 0, 496, 61, 73, 74, 62, 0,
- 63, 64, 0, 0, 0, 0, 0, 65, 61, 0,
- 66, 62, 0, 63, 64, 67, 68, 69, 0, 0,
- 65, 70, 71, 66, 0, 0, 72, 0, 67, 68,
- 69, 0, 57, 0, 70, 71, 0, 58, 59, 128,
- 60, 0, 0, 0, 0, 0, 73, 74, 151, 152,
- 153, 154, 155, 156, 157, 158, 159, 160, 61, 73,
- 74, 62, 0, 63, 64, 429, 0, 0, 0, 0,
- 65, 0, 0, 66, 0, 0, 0, 0, 67, 68,
- 69, 0, 0, 0, 70, 71, 515, 0, 0, 130,
- 0, 144, 145, 146, 0, 147, 148, 149, 150, 151,
- 152, 153, 154, 155, 156, 157, 158, 159, 160, 73,
- 74, 0, 144, 145, 146, 0, 147, 148, 149, 150,
- 151, 152, 153, 154, 155, 156, 157, 158, 159, 160,
- 0, 0, 0, 0, 0, 0, 144, 145, 146, 430,
- 147, 148, 149, 150, 151, 152, 153, 154, 155, 156,
- 157, 158, 159, 160, 0, 0, 0, 144, 145, 146,
- 516, 147, 148, 149, 150, 151, 152, 153, 154, 155,
- 156, 157, 158, 159, 160, 0, 195, 0, 0, 0,
- 0, 144, 145, 146, 514, 147, 148, 149, 150, 151,
- 152, 153, 154, 155, 156, 157, 158, 159, 160, 0,
- 0, 0, 0, 0, 0, 562, 144, 145, 146, 568,
- 147, 148, 149, 150, 151, 152, 153, 154, 155, 156,
- 157, 158, 159, 160, 144, 145, 146, 0, 147, 148,
- 149, 150, 151, 152, 153, 154, 155, 156, 157, 158,
- 159, 160, 148, 149, 150, 151, 152, 153, 154, 155,
- 156, 157, 158, 159, 160, 150, 151, 152, 153, 154,
- 155, 156, 157, 158, 159, 160, 152, 153, 154, 155,
- 156, 157, 158, 159, 160
-};
-
-static const short yycheck[] = { 34,
- 35, 9, 10, 11, 18, 43, 47, 104, 184, 19,
- 20, 2, 3, 20, 2, 3, 139, 191, 49, 100,
- 170, 97, 297, 490, 38, 203, 373, 204, 35, 254,
- 1, 88, 9, 47, 32, 3, 92, 72, 101, 341,
- 1, 78, 1, 391, 63, 64, 53, 27, 0, 174,
- 69, 10, 72, 39, 3, 4, 75, 65, 39, 60,
- 61, 96, 489, 60, 61, 72, 3, 4, 3, 4,
- 3, 4, 3, 4, 422, 89, 77, 39, 109, 381,
- 77, 88, 342, 51, 202, 345, 183, 101, 169, 60,
- 208, 77, 60, 128, 0, 130, 77, 399, 400, 566,
- 77, 251, 51, 83, 79, 3, 4, 82, 128, 7,
- 130, 538, 122, 132, 124, 77, 192, 124, 393, 60,
- 7, 128, 83, 130, 83, 592, 202, 125, 430, 127,
- 432, 166, 208, 560, 197, 260, 171, 213, 565, 215,
- 567, 31, 367, 174, 200, 60, 83, 83, 83, 39,
- 577, 426, 83, 51, 1, 163, 164, 4, 505, 6,
- 7, 83, 60, 61, 51, 12, 13, 14, 60, 61,
- 205, 78, 322, 60, 61, 82, 350, 77, 605, 3,
- 482, 28, 82, 197, 8, 77, 77, 364, 143, 144,
- 145, 82, 147, 148, 149, 150, 151, 152, 153, 154,
- 155, 156, 157, 158, 159, 160, 225, 385, 265, 266,
- 83, 334, 514, 363, 516, 389, 366, 391, 4, 79,
- 6, 7, 79, 258, 3, 4, 12, 13, 14, 260,
- 78, 78, 79, 77, 82, 510, 414, 51, 82, 3,
- 321, 77, 28, 7, 77, 326, 60, 61, 422, 82,
- 82, 265, 266, 78, 209, 9, 27, 82, 78, 266,
- 562, 27, 82, 3, 77, 3, 4, 77, 446, 7,
- 60, 347, 51, 1, 350, 31, 4, 5, 6, 7,
- 37, 60, 61, 82, 12, 13, 14, 51, 279, 60,
- 61, 279, 78, 79, 60, 61, 60, 61, 306, 27,
- 28, 78, 78, 31, 77, 428, 82, 77, 322, 37,
- 348, 51, 83, 51, 390, 391, 5, 6, 7, 77,
- 60, 61, 60, 12, 13, 14, 449, 78, 338, 339,
- 365, 82, 339, 83, 375, 4, 5, 6, 7, 78,
- 79, 349, 78, 12, 13, 14, 422, 27, 356, 363,
- 78, 306, 366, 308, 82, 83, 60, 61, 3, 28,
- 1, 375, 7, 4, 5, 6, 7, 60, 61, 10,
- 9, 12, 13, 14, 4, 5, 6, 7, 51, 52,
- 53, 78, 12, 13, 14, 82, 341, 28, 78, 79,
- 84, 1, 400, 428, 4, 5, 6, 7, 28, 78,
- 355, 356, 12, 13, 14, 60, 51, 3, 4, 78,
- 418, 60, 61, 37, 449, 60, 539, 27, 28, 79,
- 428, 31, 79, 599, 432, 460, 381, 37, 79, 384,
- 77, 607, 555, 77, 557, 78, 533, 428, 39, 82,
- 428, 449, 83, 39, 399, 400, 3, 4, 78, 77,
- 60, 61, 487, 461, 79, 51, 491, 467, 468, 77,
- 415, 468, 84, 498, 60, 78, 507, 505, 78, 82,
- 60, 61, 82, 83, 429, 430, 84, 432, 513, 434,
- 49, 50, 51, 52, 53, 520, 1, 78, 79, 4,
- 5, 6, 7, 507, 51, 530, 77, 12, 13, 14,
- 77, 456, 60, 60, 539, 47, 48, 49, 50, 51,
- 52, 53, 27, 28, 55, 56, 31, 58, 59, 60,
- 61, 37, 37, 60, 61, 84, 79, 482, 82, 1,
- 33, 539, 4, 5, 6, 7, 77, 84, 3, 78,
- 12, 13, 14, 6, 7, 60, 61, 3, 39, 12,
- 13, 14, 39, 588, 82, 60, 28, 79, 79, 514,
- 515, 516, 79, 78, 84, 77, 39, 82, 83, 1,
- 525, 3, 4, 5, 6, 7, 8, 9, 77, 11,
- 12, 13, 14, 15, 39, 17, 18, 19, 20, 21,
- 22, 23, 24, 25, 26, 27, 28, 29, 60, 60,
- 32, 60, 34, 35, 39, 7, 39, 562, 78, 41,
- 78, 83, 44, 16, 78, 8, 60, 49, 50, 51,
- 78, 78, 60, 55, 56, 78, 77, 17, 60, 78,
- 82, 77, 1, 78, 3, 4, 5, 6, 7, 78,
- 77, 10, 8, 12, 13, 14, 78, 79, 80, 81,
- 1, 83, 3, 4, 5, 6, 7, 8, 9, 28,
- 11, 12, 13, 14, 15, 77, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 77,
- 9, 32, 78, 34, 35, 60, 78, 82, 0, 78,
- 41, 55, 56, 44, 58, 59, 60, 61, 49, 50,
- 51, 77, 0, 77, 55, 56, 78, 78, 77, 60,
- 1, 3, 3, 4, 5, 6, 7, 165, 490, 390,
- 48, 12, 13, 14, 412, 192, 53, 78, 363, 80,
- 81, 1, 83, 3, 4, 177, 27, 28, 8, 9,
- 356, 11, 347, 212, 215, 15, 53, 17, 18, 19,
- 20, 21, 22, 23, 24, 25, 26, 27, 118, 29,
- 51, 390, 32, 210, 34, 35, 351, 589, 591, 60,
- 539, 41, 539, 257, 44, 331, -1, -1, -1, 49,
- 50, 51, -1, -1, -1, 55, 56, 78, -1, 1,
- 60, -1, 4, 5, 6, 7, -1, -1, 10, -1,
- 12, 13, 14, -1, -1, -1, -1, -1, 78, 79,
- 80, 81, 1, 83, 3, 4, 28, -1, -1, 8,
- 9, -1, 11, -1, -1, -1, 15, -1, 17, 18,
- 19, 20, 21, 22, 23, 24, 25, 26, 27, -1,
- 29, -1, -1, 32, -1, 34, 35, -1, 4, 5,
- 6, 7, 41, -1, -1, 44, 12, 13, 14, -1,
- 49, 50, 51, -1, -1, 77, 55, 56, -1, -1,
- -1, 60, 28, -1, -1, -1, -1, 3, 4, 5,
- 6, 7, -1, -1, -1, -1, 12, 13, 14, 78,
- 79, 80, 81, 1, 83, 3, 4, -1, -1, -1,
- 8, 9, 28, 11, -1, -1, -1, 15, -1, 17,
- 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
- -1, 29, 78, -1, 32, 51, 34, 35, -1, 4,
- 5, 6, 7, 41, 60, 61, 44, 12, 13, 14,
- -1, 49, 50, 51, -1, -1, -1, 55, 56, -1,
- -1, -1, 60, 28, 4, -1, 6, 7, -1, -1,
- -1, -1, 12, 13, 14, -1, -1, -1, -1, -1,
- 78, -1, 80, 81, 1, 83, 3, 4, 28, -1,
- -1, 8, 9, -1, 11, -1, -1, -1, 15, -1,
- 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
- 27, 51, 29, -1, -1, 32, -1, 34, 35, -1,
- 60, 61, -1, -1, 41, -1, -1, 44, -1, -1,
- -1, -1, 49, 50, 51, -1, -1, -1, 55, 56,
- -1, -1, 1, 60, 3, 4, -1, 6, 7, 8,
- 9, -1, 11, 12, 13, 14, -1, -1, -1, -1,
- -1, 78, -1, 80, 81, -1, 83, -1, -1, 28,
- 29, -1, -1, 32, -1, 34, 35, -1, -1, -1,
- -1, -1, 41, -1, -1, 44, -1, -1, -1, -1,
- 49, 50, 51, -1, -1, -1, 55, 56, -1, -1,
- 1, 60, 3, 4, -1, -1, -1, 8, 9, -1,
- 11, -1, -1, -1, -1, -1, -1, 4, 5, 6,
- 7, 80, 81, 10, 83, 12, 13, 14, 29, -1,
- -1, 32, -1, 34, 35, -1, -1, -1, -1, -1,
- 41, 28, -1, 44, -1, -1, -1, -1, 49, 50,
- 51, -1, -1, -1, 55, 56, -1, -1, -1, 60,
- 61, 1, -1, 3, 4, -1, -1, -1, 8, 9,
- -1, 11, -1, -1, -1, -1, -1, -1, 79, 80,
- 81, -1, 83, -1, -1, -1, -1, -1, -1, 29,
- -1, -1, 32, -1, 34, 35, -1, -1, -1, -1,
- -1, 41, -1, -1, 44, -1, -1, -1, -1, 49,
- 50, 51, -1, -1, -1, 55, 56, -1, -1, -1,
- 60, 61, 1, -1, 3, 4, -1, -1, -1, 8,
- 9, -1, 11, -1, -1, -1, -1, -1, -1, 79,
- 80, 81, -1, 83, -1, -1, -1, -1, -1, -1,
- 29, -1, -1, 32, -1, 34, 35, -1, -1, -1,
- -1, -1, 41, -1, -1, 44, -1, -1, -1, -1,
- 49, 50, 51, -1, -1, -1, 55, 56, -1, -1,
- -1, 60, 61, 1, -1, 3, 4, -1, -1, -1,
- 8, 9, -1, 11, -1, -1, -1, -1, -1, -1,
- 79, 80, 81, -1, 83, -1, -1, -1, -1, -1,
- -1, 29, -1, -1, 32, -1, 34, 35, -1, -1,
- -1, -1, -1, 41, -1, -1, 44, -1, -1, -1,
- -1, 49, 50, 51, -1, -1, -1, 55, 56, 1,
- -1, 3, 60, 61, -1, -1, 8, 9, -1, 11,
- 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
- 52, 53, 80, 81, -1, 83, -1, 29, -1, -1,
- 32, -1, 34, 35, -1, -1, -1, -1, -1, 41,
- -1, -1, 44, -1, -1, -1, -1, 49, 50, 51,
- -1, 3, -1, 55, 56, -1, 8, 9, 60, 11,
- -1, -1, -1, -1, 3, -1, -1, -1, -1, 8,
- 9, -1, 11, -1, -1, -1, -1, 29, 80, 81,
- 32, 83, 34, 35, -1, -1, -1, -1, -1, 41,
- 29, -1, 44, 32, -1, 34, 35, 49, 50, 51,
- -1, -1, 41, 55, 56, 44, -1, -1, 60, -1,
- 49, 50, 51, -1, -1, -1, 55, 56, 3, -1,
- -1, 60, -1, 8, 9, -1, 11, -1, 80, 81,
- -1, 3, 84, -1, -1, -1, 8, 9, -1, 11,
- -1, 80, 81, -1, 29, 84, -1, 32, -1, 34,
- 35, -1, -1, -1, -1, -1, 41, 29, -1, 44,
- 32, -1, 34, 35, 49, 50, 51, -1, -1, 41,
- 55, 56, 44, -1, -1, 60, -1, 49, 50, 51,
- -1, -1, -1, 55, 56, 3, -1, -1, 60, -1,
- 8, 9, -1, 11, -1, 80, 81, -1, -1, 84,
- 46, 47, 48, 49, 50, 51, 52, 53, 80, 81,
- -1, 29, 84, -1, 32, -1, 34, 35, 10, -1,
- -1, -1, -1, 41, -1, -1, 44, -1, -1, -1,
- -1, 49, 50, 51, -1, -1, -1, 55, 56, -1,
- -1, -1, 60, -1, 36, 37, 38, 39, 40, 41,
- 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
- 52, 53, 80, 81, -1, -1, 84, 3, 4, 5,
- 6, 7, 8, 9, -1, 11, 12, 13, 14, 15,
- -1, 17, 18, 19, 20, 21, 22, 23, 24, 25,
- 26, 27, 28, 29, -1, -1, 32, -1, 34, 35,
- -1, -1, -1, -1, -1, 41, -1, -1, 44, -1,
- -1, -1, -1, 49, 50, 51, -1, 3, 4, 55,
- 56, -1, 8, 9, 60, 11, -1, -1, -1, 15,
- -1, 17, 18, 19, 20, 21, 22, 23, 24, 25,
- 26, 27, 78, 29, 80, 81, 32, 83, 34, 35,
- -1, -1, -1, -1, -1, 41, -1, -1, 44, -1,
- -1, -1, -1, 49, 50, 51, -1, 3, -1, 55,
- 56, -1, 8, 9, 60, 11, 38, -1, 40, 41,
- 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
- 52, 53, 78, 29, 80, 81, 32, 83, 34, 35,
- -1, -1, -1, -1, -1, 41, -1, -1, 44, -1,
- -1, -1, -1, 49, 50, 51, -1, -1, -1, 55,
- 56, -1, -1, -1, 60, 3, 4, -1, 6, 7,
- 8, 9, -1, 11, 12, 13, 14, -1, -1, -1,
- -1, -1, -1, -1, 80, 81, -1, 83, -1, -1,
- 28, 29, -1, -1, 32, -1, 34, 35, -1, 3,
- -1, -1, -1, 41, 8, 9, 44, 11, -1, -1,
- -1, 49, 50, 51, -1, -1, -1, 55, 56, -1,
- -1, -1, 60, -1, -1, 29, -1, -1, 32, -1,
- 34, 35, -1, -1, -1, -1, -1, 41, -1, -1,
- 44, -1, 80, 81, -1, 49, 50, 51, -1, 3,
- -1, 55, 56, -1, 8, 9, 60, 11, -1, -1,
- -1, -1, 3, -1, -1, -1, -1, 8, 9, -1,
- 11, -1, -1, -1, 78, 29, 80, 81, 32, -1,
- 34, 35, -1, -1, -1, -1, -1, 41, 29, -1,
- 44, 32, -1, 34, 35, 49, 50, 51, -1, -1,
- 41, 55, 56, 44, -1, -1, 60, -1, 49, 50,
- 51, -1, 3, -1, 55, 56, -1, 8, 9, 60,
- 11, -1, -1, -1, -1, -1, 80, 81, 44, 45,
- 46, 47, 48, 49, 50, 51, 52, 53, 29, 80,
- 81, 32, -1, 34, 35, 10, -1, -1, -1, -1,
- 41, -1, -1, 44, -1, -1, -1, -1, 49, 50,
- 51, -1, -1, -1, 55, 56, 10, -1, -1, 60,
- -1, 36, 37, 38, -1, 40, 41, 42, 43, 44,
- 45, 46, 47, 48, 49, 50, 51, 52, 53, 80,
- 81, -1, 36, 37, 38, -1, 40, 41, 42, 43,
- 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
- -1, -1, -1, -1, -1, -1, 36, 37, 38, 84,
- 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
- 50, 51, 52, 53, -1, -1, -1, 36, 37, 38,
- 84, 40, 41, 42, 43, 44, 45, 46, 47, 48,
- 49, 50, 51, 52, 53, -1, 31, -1, -1, -1,
- -1, 36, 37, 38, 84, 40, 41, 42, 43, 44,
- 45, 46, 47, 48, 49, 50, 51, 52, 53, -1,
- -1, -1, -1, -1, -1, 84, 36, 37, 38, 39,
- 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
- 50, 51, 52, 53, 36, 37, 38, -1, 40, 41,
- 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
- 52, 53, 41, 42, 43, 44, 45, 46, 47, 48,
- 49, 50, 51, 52, 53, 43, 44, 45, 46, 47,
- 48, 49, 50, 51, 52, 53, 45, 46, 47, 48,
- 49, 50, 51, 52, 53
-};
-/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
-#line 3 "bison.simple"
-
-/* Skeleton output parser for bison,
- Copyright (C) 1984, 1989, 1990 Bob Corbett and Richard Stallman
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-#ifndef alloca
-#ifdef __GNUC__
-#define alloca __builtin_alloca
-#else /* not GNU C. */
-#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__)
-#include <alloca.h>
-#else /* not sparc */
-#if defined (MSDOS) && !defined (__TURBOC__)
-#include <malloc.h>
-#else /* not MSDOS, or __TURBOC__ */
-#if defined(_AIX)
-#include <malloc.h>
- #pragma alloca
-#endif /* not _AIX */
-#endif /* not MSDOS, or __TURBOC__ */
-#endif /* not sparc. */
-#endif /* not GNU C. */
-#endif /* alloca not defined. */
-
-/* This is the parser code that is written into each bison parser
- when the %semantic_parser declaration is not specified in the grammar.
- It was written by Richard Stallman by simplifying the hairy parser
- used when %semantic_parser is specified. */
-
-/* Note: there must be only one dollar sign in this file.
- It is replaced by the list of actions, each action
- as one case of the switch. */
-
-#define yyerrok (yyerrstatus = 0)
-#define yyclearin (yychar = YYEMPTY)
-#define YYEMPTY -2
-#define YYEOF 0
-#define YYACCEPT return(0)
-#define YYABORT return(1)
-#define YYERROR goto yyerrlab1
-/* Like YYERROR except do call yyerror.
- This remains here temporarily to ease the
- transition to the new meaning of YYERROR, for GCC.
- Once GCC version 2 has supplanted version 1, this can go. */
-#define YYFAIL goto yyerrlab
-#define YYRECOVERING() (!!yyerrstatus)
-#define YYBACKUP(token, value) \
-do \
- if (yychar == YYEMPTY && yylen == 1) \
- { yychar = (token), yylval = (value); \
- yychar1 = YYTRANSLATE (yychar); \
- YYPOPSTACK; \
- goto yybackup; \
- } \
- else \
- { yyerror ("syntax error: cannot back up"); YYERROR; } \
-while (0)
-
-#define YYTERROR 1
-#define YYERRCODE 256
-
-#ifndef YYPURE
-#define YYLEX yylex()
-#endif
-
-#ifdef YYPURE
-#ifdef YYLSP_NEEDED
-#define YYLEX yylex(&yylval, &yylloc)
-#else
-#define YYLEX yylex(&yylval)
-#endif
-#endif
-
-/* If nonreentrant, generate the variables here */
-
-#ifndef YYPURE
-
-int yychar; /* the lookahead symbol */
-YYSTYPE yylval; /* the semantic value of the */
- /* lookahead symbol */
-
-#ifdef YYLSP_NEEDED
-YYLTYPE yylloc; /* location data for the lookahead */
- /* symbol */
-#endif
-
-int yynerrs; /* number of parse errors so far */
-#endif /* not YYPURE */
-
-#if YYDEBUG != 0
-int yydebug; /* nonzero means print parse trace */
-/* Since this is uninitialized, it does not stop multiple parsers
- from coexisting. */
-#endif
-
-/* YYINITDEPTH indicates the initial size of the parser's stacks */
-
-#ifndef YYINITDEPTH
-#define YYINITDEPTH 200
-#endif
-
-/* YYMAXDEPTH is the maximum size the stacks can grow to
- (effective only if the built-in stack extension method is used). */
-
-#if YYMAXDEPTH == 0
-#undef YYMAXDEPTH
-#endif
-
-#ifndef YYMAXDEPTH
-#define YYMAXDEPTH 10000
-#endif
-
-#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
-#define __yy_bcopy(FROM,TO,COUNT) __builtin_memcpy(TO,FROM,COUNT)
-#else /* not GNU C or C++ */
-#ifndef __cplusplus
-
-/* This is the most reliable way to avoid incompatibilities
- in available built-in functions on various systems. */
-static void
-__yy_bcopy (from, to, count)
- char *from;
- char *to;
- int count;
-{
- register char *f = from;
- register char *t = to;
- register int i = count;
-
- while (i-- > 0)
- *t++ = *f++;
-}
-
-#else /* __cplusplus */
-
-/* This is the most reliable way to avoid incompatibilities
- in available built-in functions on various systems. */
-static void
-__yy_bcopy (char *from, char *to, int count)
-{
- register char *f = from;
- register char *t = to;
- register int i = count;
-
- while (i-- > 0)
- *t++ = *f++;
-}
-
-#endif
-#endif
-
-#line 169 "bison.simple"
-int
-yyparse()
-{
- register int yystate;
- register int yyn;
- register short *yyssp;
- register YYSTYPE *yyvsp;
- int yyerrstatus; /* number of tokens to shift before error messages enabled */
- int yychar1; /* lookahead token as an internal (translated) token number */
-
- short yyssa[YYINITDEPTH]; /* the state stack */
- YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
-
- short *yyss = yyssa; /* refer to the stacks thru separate pointers */
- YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
-
-#ifdef YYLSP_NEEDED
- YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
- YYLTYPE *yyls = yylsa;
- YYLTYPE *yylsp;
-
-#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
-#else
-#define YYPOPSTACK (yyvsp--, yyssp--)
-#endif
-
- int yystacksize = YYINITDEPTH;
-
-#ifdef YYPURE
- int yychar;
- YYSTYPE yylval;
- int yynerrs;
-#ifdef YYLSP_NEEDED
- YYLTYPE yylloc;
-#endif
-#endif
-
- YYSTYPE yyval; /* the variable used to return */
- /* semantic values from the action */
- /* routines */
-
- int yylen;
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Starting parse\n");
-#endif
-
- yystate = 0;
- yyerrstatus = 0;
- yynerrs = 0;
- yychar = YYEMPTY; /* Cause a token to be read. */
-
- /* Initialize stack pointers.
- Waste one element of value and location stack
- so that they stay on the same level as the state stack. */
-
- yyssp = yyss - 1;
- yyvsp = yyvs;
-#ifdef YYLSP_NEEDED
- yylsp = yyls;
-#endif
-
-/* Push a new state, which is found in yystate . */
-/* In all cases, when you get here, the value and location stacks
- have just been pushed. so pushing a state here evens the stacks. */
-yynewstate:
-
- *++yyssp = yystate;
-
- if (yyssp >= yyss + yystacksize - 1)
- {
- /* Give user a chance to reallocate the stack */
- /* Use copies of these so that the &'s don't force the real ones into memory. */
- YYSTYPE *yyvs1 = yyvs;
- short *yyss1 = yyss;
-#ifdef YYLSP_NEEDED
- YYLTYPE *yyls1 = yyls;
-#endif
-
- /* Get the current used size of the three stacks, in elements. */
- int size = yyssp - yyss + 1;
-
-#ifdef yyoverflow
- /* Each stack pointer address is followed by the size of
- the data in use in that stack, in bytes. */
- yyoverflow("parser stack overflow",
- &yyss1, size * sizeof (*yyssp),
- &yyvs1, size * sizeof (*yyvsp),
-#ifdef YYLSP_NEEDED
- &yyls1, size * sizeof (*yylsp),
-#endif
- &yystacksize);
-
- yyss = yyss1; yyvs = yyvs1;
-#ifdef YYLSP_NEEDED
- yyls = yyls1;
-#endif
-#else /* no yyoverflow */
- /* Extend the stack our own way. */
- if (yystacksize >= YYMAXDEPTH)
- {
- yyerror("parser stack overflow");
- return 2;
- }
- yystacksize *= 2;
- if (yystacksize > YYMAXDEPTH)
- yystacksize = YYMAXDEPTH;
- yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
- __yy_bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
- yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
- __yy_bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
-#ifdef YYLSP_NEEDED
- yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
- __yy_bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
-#endif
-#endif /* no yyoverflow */
-
- yyssp = yyss + size - 1;
- yyvsp = yyvs + size - 1;
-#ifdef YYLSP_NEEDED
- yylsp = yyls + size - 1;
-#endif
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Stack size increased to %d\n", yystacksize);
-#endif
-
- if (yyssp >= yyss + yystacksize - 1)
- YYABORT;
- }
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Entering state %d\n", yystate);
-#endif
-
- yybackup:
-
-/* Do appropriate processing given the current state. */
-/* Read a lookahead token if we need one and don't already have one. */
-/* yyresume: */
-
- /* First try to decide what to do without reference to lookahead token. */
-
- yyn = yypact[yystate];
- if (yyn == YYFLAG)
- goto yydefault;
-
- /* Not known => get a lookahead token if don't already have one. */
-
- /* yychar is either YYEMPTY or YYEOF
- or a valid token in external form. */
-
- if (yychar == YYEMPTY)
- {
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Reading a token: ");
-#endif
- yychar = YYLEX;
- }
-
- /* Convert token to internal form (in yychar1) for indexing tables with */
-
- if (yychar <= 0) /* This means end of input. */
- {
- yychar1 = 0;
- yychar = YYEOF; /* Don't call YYLEX any more */
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Now at end of input.\n");
-#endif
- }
- else
- {
- yychar1 = YYTRANSLATE(yychar);
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
- /* Give the individual parser a way to print the precise meaning
- of a token, for further debugging info. */
-#ifdef YYPRINT
- YYPRINT (stderr, yychar, yylval);
-#endif
- fprintf (stderr, ")\n");
- }
-#endif
- }
-
- yyn += yychar1;
- if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
- goto yydefault;
-
- yyn = yytable[yyn];
-
- /* yyn is what to do for this token type in this state.
- Negative => reduce, -yyn is rule number.
- Positive => shift, yyn is new state.
- New state is final state => don't bother to shift,
- just return success.
- 0, or most negative number => error. */
-
- if (yyn < 0)
- {
- if (yyn == YYFLAG)
- goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
- }
- else if (yyn == 0)
- goto yyerrlab;
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
- /* Shift the lookahead token. */
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
-#endif
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != YYEOF)
- yychar = YYEMPTY;
-
- *++yyvsp = yylval;
-#ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
-#endif
-
- /* count tokens shifted since error; after three, turn off error status. */
- if (yyerrstatus) yyerrstatus--;
-
- yystate = yyn;
- goto yynewstate;
-
-/* Do the default action for the current state. */
-yydefault:
-
- yyn = yydefact[yystate];
- if (yyn == 0)
- goto yyerrlab;
-
-/* Do a reduction. yyn is the number of a rule to reduce with. */
-yyreduce:
- yylen = yyr2[yyn];
- yyval = yyvsp[1-yylen]; /* implement default value of the action */
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- int i;
-
- fprintf (stderr, "Reducing via rule %d (line %d), ",
- yyn, yyrline[yyn]);
-
- /* Print the symboles being reduced, and their result. */
- for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
- fprintf (stderr, "%s ", yytname[yyrhs[i]]);
- fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
- }
-#endif
-
-
- switch (yyn) {
-
-case 1:
-#line 219 "c-parse.y"
-{ if (pedantic)
- pedwarn ("ANSI C forbids an empty source file");
- ;
- break;}
-case 2:
-#line 223 "c-parse.y"
-{
- /* In case there were missing closebraces,
- get us back to the global binding level. */
- while (! global_bindings_p ())
- poplevel (0, 0, 0);
- ;
- break;}
-case 3:
-#line 236 "c-parse.y"
-{yyval.ttype = NULL_TREE; ;
- break;}
-case 5:
-#line 237 "c-parse.y"
-{yyval.ttype = NULL_TREE; ;
- break;}
-case 9:
-#line 244 "c-parse.y"
-{ STRIP_NOPS (yyvsp[-2].ttype);
- if ((TREE_CODE (yyvsp[-2].ttype) == ADDR_EXPR
- && TREE_CODE (TREE_OPERAND (yyvsp[-2].ttype, 0)) == STRING_CST)
- || TREE_CODE (yyvsp[-2].ttype) == STRING_CST)
- assemble_asm (yyvsp[-2].ttype);
- else
- error ("argument of `asm' is not a constant string"); ;
- break;}
-case 10:
-#line 255 "c-parse.y"
-{ if (pedantic)
- error ("ANSI C forbids data definition with no type or storage class");
- else if (!flag_traditional)
- warning ("data definition has no type or storage class"); ;
- break;}
-case 11:
-#line 260 "c-parse.y"
-{;
- break;}
-case 12:
-#line 262 "c-parse.y"
-{;
- break;}
-case 13:
-#line 264 "c-parse.y"
-{ pedwarn ("empty declaration"); ;
- break;}
-case 14:
-#line 266 "c-parse.y"
-{ shadow_tag (yyvsp[-1].ttype); ;
- break;}
-case 17:
-#line 270 "c-parse.y"
-{ if (pedantic)
- pedwarn ("ANSI C does not allow extra `;' outside of a function"); ;
- break;}
-case 18:
-#line 276 "c-parse.y"
-{ if (! start_function (yyvsp[-2].ttype, yyvsp[0].ttype, 0))
- YYERROR1;
- reinit_parse_for_function (); ;
- break;}
-case 19:
-#line 280 "c-parse.y"
-{ store_parm_decls (); ;
- break;}
-case 20:
-#line 282 "c-parse.y"
-{ finish_function (0); ;
- break;}
-case 21:
-#line 284 "c-parse.y"
-{ ;
- break;}
-case 22:
-#line 286 "c-parse.y"
-{ if (! start_function (yyvsp[-2].ttype, yyvsp[0].ttype, 0))
- YYERROR1;
- reinit_parse_for_function (); ;
- break;}
-case 23:
-#line 290 "c-parse.y"
-{ store_parm_decls (); ;
- break;}
-case 24:
-#line 292 "c-parse.y"
-{ finish_function (0); ;
- break;}
-case 25:
-#line 294 "c-parse.y"
-{ ;
- break;}
-case 26:
-#line 296 "c-parse.y"
-{ if (! start_function (NULL_TREE, yyvsp[0].ttype, 0))
- YYERROR1;
- reinit_parse_for_function (); ;
- break;}
-case 27:
-#line 300 "c-parse.y"
-{ store_parm_decls (); ;
- break;}
-case 28:
-#line 302 "c-parse.y"
-{ finish_function (0); ;
- break;}
-case 29:
-#line 304 "c-parse.y"
-{ ;
- break;}
-case 32:
-#line 313 "c-parse.y"
-{ yyval.code = ADDR_EXPR; ;
- break;}
-case 33:
-#line 315 "c-parse.y"
-{ yyval.code = NEGATE_EXPR; ;
- break;}
-case 34:
-#line 317 "c-parse.y"
-{ yyval.code = CONVERT_EXPR; ;
- break;}
-case 35:
-#line 319 "c-parse.y"
-{ yyval.code = PREINCREMENT_EXPR; ;
- break;}
-case 36:
-#line 321 "c-parse.y"
-{ yyval.code = PREDECREMENT_EXPR; ;
- break;}
-case 37:
-#line 323 "c-parse.y"
-{ yyval.code = BIT_NOT_EXPR; ;
- break;}
-case 38:
-#line 325 "c-parse.y"
-{ yyval.code = TRUTH_NOT_EXPR; ;
- break;}
-case 39:
-#line 329 "c-parse.y"
-{ yyval.ttype = build_compound_expr (yyvsp[0].ttype); ;
- break;}
-case 40:
-#line 334 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 42:
-#line 340 "c-parse.y"
-{ yyval.ttype = build_tree_list (NULL_TREE, yyvsp[0].ttype); ;
- break;}
-case 43:
-#line 342 "c-parse.y"
-{ chainon (yyvsp[-2].ttype, build_tree_list (NULL_TREE, yyvsp[0].ttype)); ;
- break;}
-case 45:
-#line 348 "c-parse.y"
-{ yyval.ttype = build_indirect_ref (yyvsp[0].ttype, "unary *"); ;
- break;}
-case 46:
-#line 351 "c-parse.y"
-{ yyvsp[0].itype = pedantic;
- pedantic = 0; ;
- break;}
-case 47:
-#line 354 "c-parse.y"
-{ yyval.ttype = yyvsp[0].ttype;
- pedantic = yyvsp[-2].itype; ;
- break;}
-case 48:
-#line 357 "c-parse.y"
-{ yyval.ttype = build_unary_op (yyvsp[-1].code, yyvsp[0].ttype, 0);
- overflow_warning (yyval.ttype); ;
- break;}
-case 49:
-#line 361 "c-parse.y"
-{ tree label = lookup_label (yyvsp[0].ttype);
- if (label == 0)
- yyval.ttype = null_pointer_node;
- else
- {
- TREE_USED (label) = 1;
- yyval.ttype = build1 (ADDR_EXPR, ptr_type_node, label);
- TREE_CONSTANT (yyval.ttype) = 1;
- }
- ;
- break;}
-case 50:
-#line 387 "c-parse.y"
-{ if (TREE_CODE (yyvsp[0].ttype) == COMPONENT_REF
- && DECL_BIT_FIELD (TREE_OPERAND (yyvsp[0].ttype, 1)))
- error ("`sizeof' applied to a bit-field");
- yyval.ttype = c_sizeof (TREE_TYPE (yyvsp[0].ttype)); ;
- break;}
-case 51:
-#line 392 "c-parse.y"
-{ yyval.ttype = c_sizeof (groktypename (yyvsp[-1].ttype)); ;
- break;}
-case 52:
-#line 394 "c-parse.y"
-{ yyval.ttype = c_alignof_expr (yyvsp[0].ttype); ;
- break;}
-case 53:
-#line 396 "c-parse.y"
-{ yyval.ttype = c_alignof (groktypename (yyvsp[-1].ttype)); ;
- break;}
-case 54:
-#line 398 "c-parse.y"
-{ yyval.ttype = build_unary_op (REALPART_EXPR, yyvsp[0].ttype, 0); ;
- break;}
-case 55:
-#line 400 "c-parse.y"
-{ yyval.ttype = build_unary_op (IMAGPART_EXPR, yyvsp[0].ttype, 0); ;
- break;}
-case 57:
-#line 406 "c-parse.y"
-{ tree type = groktypename (yyvsp[-2].ttype);
- yyval.ttype = build_c_cast (type, yyvsp[0].ttype); ;
- break;}
-case 58:
-#line 409 "c-parse.y"
-{ tree type = groktypename (yyvsp[-5].ttype);
- char *name;
- if (pedantic)
- pedwarn ("ANSI C forbids constructor expressions");
- if (TYPE_NAME (type) != 0)
- {
- if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
- name = IDENTIFIER_POINTER (TYPE_NAME (type));
- else
- name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
- }
- else
- name = "";
- yyval.ttype = digest_init (type, build_nt (CONSTRUCTOR, NULL_TREE, nreverse (yyvsp[-2].ttype)),
- NULL_PTR, 0, 0, name);
- if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0)
- {
- int failure = complete_array_type (type, yyval.ttype, 1);
- if (failure)
- abort ();
- }
- ;
- break;}
-case 60:
-#line 436 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 61:
-#line 438 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 62:
-#line 440 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 63:
-#line 442 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 64:
-#line 444 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 65:
-#line 446 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 66:
-#line 448 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 67:
-#line 450 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 68:
-#line 452 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 69:
-#line 454 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 70:
-#line 456 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 71:
-#line 458 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (yyvsp[-1].code, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 72:
-#line 460 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (TRUTH_ANDIF_EXPR, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 73:
-#line 462 "c-parse.y"
-{ yyval.ttype = parser_build_binary_op (TRUTH_ORIF_EXPR, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 74:
-#line 464 "c-parse.y"
-{ yyval.ttype = build_conditional_expr (yyvsp[-4].ttype, yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 75:
-#line 466 "c-parse.y"
-{ yyval.ttype = build_modify_expr (yyvsp[-2].ttype, NOP_EXPR, yyvsp[0].ttype);
- C_SET_EXP_ORIGINAL_CODE (yyval.ttype, MODIFY_EXPR); ;
- break;}
-case 76:
-#line 469 "c-parse.y"
-{ yyval.ttype = build_modify_expr (yyvsp[-2].ttype, yyvsp[-1].code, yyvsp[0].ttype);
- /* This inhibits warnings in truthvalue_conversion. */
- C_SET_EXP_ORIGINAL_CODE (yyval.ttype, ERROR_MARK); ;
- break;}
-case 77:
-#line 476 "c-parse.y"
-{
- tree context;
-
- yyval.ttype = lastiddecl;
- if (!yyval.ttype || yyval.ttype == error_mark_node)
- {
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- if (yychar == '(')
- {
- {
- /* Ordinary implicit function declaration. */
- yyval.ttype = implicitly_declare (yyvsp[0].ttype);
- assemble_external (yyval.ttype);
- TREE_USED (yyval.ttype) = 1;
- }
- }
- else if (current_function_decl == 0)
- {
- error ("`%s' undeclared here (not in a function)",
- IDENTIFIER_POINTER (yyvsp[0].ttype));
- yyval.ttype = error_mark_node;
- }
- else
- {
- {
- if (IDENTIFIER_GLOBAL_VALUE (yyvsp[0].ttype) != error_mark_node
- || IDENTIFIER_ERROR_LOCUS (yyvsp[0].ttype) != current_function_decl)
- {
- error ("`%s' undeclared (first use this function)",
- IDENTIFIER_POINTER (yyvsp[0].ttype));
-
- if (! undeclared_variable_notice)
- {
- error ("(Each undeclared identifier is reported only once");
- error ("for each function it appears in.)");
- undeclared_variable_notice = 1;
- }
- }
- yyval.ttype = error_mark_node;
- /* Prevent repeated error messages. */
- IDENTIFIER_GLOBAL_VALUE (yyvsp[0].ttype) = error_mark_node;
- IDENTIFIER_ERROR_LOCUS (yyvsp[0].ttype) = current_function_decl;
- }
- }
- }
- else if (TREE_TYPE (yyval.ttype) == error_mark_node)
- yyval.ttype = error_mark_node;
- else if (C_DECL_ANTICIPATED (yyval.ttype))
- {
- /* The first time we see a build-in function used,
- if it has not been declared. */
- C_DECL_ANTICIPATED (yyval.ttype) = 0;
- if (yychar == YYEMPTY)
- yychar = YYLEX;
- if (yychar == '(')
- {
- /* Omit the implicit declaration we
- would ordinarily do, so we don't lose
- the actual built in type.
- But print a diagnostic for the mismatch. */
- if (TREE_CODE (yyval.ttype) != FUNCTION_DECL)
- error ("`%s' implicitly declared as function",
- IDENTIFIER_POINTER (DECL_NAME (yyval.ttype)));
- else if ((TYPE_MODE (TREE_TYPE (TREE_TYPE (yyval.ttype)))
- != TYPE_MODE (integer_type_node))
- && (TREE_TYPE (TREE_TYPE (yyval.ttype))
- != void_type_node))
- pedwarn ("type mismatch in implicit declaration for built-in function `%s'",
- IDENTIFIER_POINTER (DECL_NAME (yyval.ttype)));
- /* If it really returns void, change that to int. */
- if (TREE_TYPE (TREE_TYPE (yyval.ttype)) == void_type_node)
- TREE_TYPE (yyval.ttype)
- = build_function_type (integer_type_node,
- TYPE_ARG_TYPES (TREE_TYPE (yyval.ttype)));
- }
- else
- pedwarn ("built-in function `%s' used without declaration",
- IDENTIFIER_POINTER (DECL_NAME (yyval.ttype)));
-
- /* Do what we would ordinarily do when a fn is used. */
- assemble_external (yyval.ttype);
- TREE_USED (yyval.ttype) = 1;
- }
- else
- {
- assemble_external (yyval.ttype);
- TREE_USED (yyval.ttype) = 1;
- }
-
- if (TREE_CODE (yyval.ttype) == CONST_DECL)
- {
- yyval.ttype = DECL_INITIAL (yyval.ttype);
- /* This is to prevent an enum whose value is 0
- from being considered a null pointer constant. */
- yyval.ttype = build1 (NOP_EXPR, TREE_TYPE (yyval.ttype), yyval.ttype);
- TREE_CONSTANT (yyval.ttype) = 1;
- }
- ;
- break;}
-case 79:
-#line 577 "c-parse.y"
-{ yyval.ttype = combine_strings (yyvsp[0].ttype); ;
- break;}
-case 80:
-#line 579 "c-parse.y"
-{ char class = TREE_CODE_CLASS (TREE_CODE (yyvsp[-1].ttype));
- if (class == 'e' || class == '1'
- || class == '2' || class == '<')
- C_SET_EXP_ORIGINAL_CODE (yyvsp[-1].ttype, ERROR_MARK);
- yyval.ttype = yyvsp[-1].ttype; ;
- break;}
-case 81:
-#line 585 "c-parse.y"
-{ yyval.ttype = error_mark_node; ;
- break;}
-case 82:
-#line 587 "c-parse.y"
-{ if (current_function_decl == 0)
- {
- error ("braced-group within expression allowed only inside a function");
- YYERROR;
- }
- /* We must force a BLOCK for this level
- so that, if it is not expanded later,
- there is a way to turn off the entire subtree of blocks
- that are contained in it. */
- keep_next_level ();
- push_iterator_stack ();
- push_label_level ();
- yyval.ttype = expand_start_stmt_expr (); ;
- break;}
-case 83:
-#line 601 "c-parse.y"
-{ tree rtl_exp;
- if (pedantic)
- pedwarn ("ANSI C forbids braced-groups within expressions");
- pop_iterator_stack ();
- pop_label_level ();
- rtl_exp = expand_end_stmt_expr (yyvsp[-2].ttype);
- /* The statements have side effects, so the group does. */
- TREE_SIDE_EFFECTS (rtl_exp) = 1;
-
- /* Make a BIND_EXPR for the BLOCK already made. */
- yyval.ttype = build (BIND_EXPR, TREE_TYPE (rtl_exp),
- NULL_TREE, rtl_exp, yyvsp[-1].ttype);
- /* Remove the block from the tree at this point.
- It gets put back at the proper place
- when the BIND_EXPR is expanded. */
- delete_block (yyvsp[-1].ttype);
- ;
- break;}
-case 84:
-#line 619 "c-parse.y"
-{ yyval.ttype = build_function_call (yyvsp[-3].ttype, yyvsp[-1].ttype); ;
- break;}
-case 85:
-#line 621 "c-parse.y"
-{ yyval.ttype = build_array_ref (yyvsp[-3].ttype, yyvsp[-1].ttype); ;
- break;}
-case 86:
-#line 623 "c-parse.y"
-{
- yyval.ttype = build_component_ref (yyvsp[-2].ttype, yyvsp[0].ttype);
- ;
- break;}
-case 87:
-#line 627 "c-parse.y"
-{
- tree expr = build_indirect_ref (yyvsp[-2].ttype, "->");
-
- yyval.ttype = build_component_ref (expr, yyvsp[0].ttype);
- ;
- break;}
-case 88:
-#line 633 "c-parse.y"
-{ yyval.ttype = build_unary_op (POSTINCREMENT_EXPR, yyvsp[-1].ttype, 0); ;
- break;}
-case 89:
-#line 635 "c-parse.y"
-{ yyval.ttype = build_unary_op (POSTDECREMENT_EXPR, yyvsp[-1].ttype, 0); ;
- break;}
-case 91:
-#line 642 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 94:
-#line 651 "c-parse.y"
-{ c_mark_varargs ();
- if (pedantic)
- pedwarn ("ANSI C does not permit use of `varargs.h'"); ;
- break;}
-case 95:
-#line 661 "c-parse.y"
-{ ;
- break;}
-case 100:
-#line 673 "c-parse.y"
-{ current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-2].itype); ;
- break;}
-case 101:
-#line 677 "c-parse.y"
-{ current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-2].itype); ;
- break;}
-case 102:
-#line 681 "c-parse.y"
-{ shadow_tag_warned (yyvsp[-1].ttype, 1);
- pedwarn ("empty declaration"); ;
- break;}
-case 103:
-#line 684 "c-parse.y"
-{ pedwarn ("empty declaration"); ;
- break;}
-case 104:
-#line 693 "c-parse.y"
-{ ;
- break;}
-case 109:
-#line 708 "c-parse.y"
-{ yyval.itype = suspend_momentary ();
- pending_xref_error ();
- declspec_stack = tree_cons (NULL_TREE, current_declspecs,
- declspec_stack);
- current_declspecs = yyvsp[0].ttype; ;
- break;}
-case 110:
-#line 717 "c-parse.y"
-{ current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-2].itype); ;
- break;}
-case 111:
-#line 721 "c-parse.y"
-{ current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-2].itype); ;
- break;}
-case 112:
-#line 725 "c-parse.y"
-{ current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-1].itype); ;
- break;}
-case 113:
-#line 729 "c-parse.y"
-{ current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-1].itype); ;
- break;}
-case 114:
-#line 733 "c-parse.y"
-{ shadow_tag (yyvsp[-1].ttype); ;
- break;}
-case 115:
-#line 735 "c-parse.y"
-{ pedwarn ("empty declaration"); ;
- break;}
-case 116:
-#line 744 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 117:
-#line 746 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[0].ttype, tree_cons (NULL_TREE, yyvsp[-1].ttype, yyvsp[-2].ttype)); ;
- break;}
-case 118:
-#line 750 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 119:
-#line 752 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-1].ttype); ;
- break;}
-case 120:
-#line 754 "c-parse.y"
-{ if (extra_warnings)
- warning ("`%s' is not at beginning of declaration",
- IDENTIFIER_POINTER (yyvsp[0].ttype));
- yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-1].ttype); ;
- break;}
-case 121:
-#line 766 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, NULL_TREE);
- TREE_STATIC (yyval.ttype) = 1; ;
- break;}
-case 122:
-#line 769 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 123:
-#line 771 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-1].ttype);
- TREE_STATIC (yyval.ttype) = 1; ;
- break;}
-case 124:
-#line 774 "c-parse.y"
-{ if (extra_warnings && TREE_STATIC (yyvsp[-1].ttype))
- warning ("`%s' is not at beginning of declaration",
- IDENTIFIER_POINTER (yyvsp[0].ttype));
- yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-1].ttype);
- TREE_STATIC (yyval.ttype) = TREE_STATIC (yyvsp[-1].ttype); ;
- break;}
-case 125:
-#line 788 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 126:
-#line 790 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[0].ttype, tree_cons (NULL_TREE, yyvsp[-1].ttype, yyvsp[-2].ttype)); ;
- break;}
-case 127:
-#line 794 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 128:
-#line 796 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-1].ttype); ;
- break;}
-case 131:
-#line 806 "c-parse.y"
-{ /* For a typedef name, record the meaning, not the name.
- In case of `foo foo, bar;'. */
- yyval.ttype = lookup_name (yyvsp[0].ttype); ;
- break;}
-case 132:
-#line 810 "c-parse.y"
-{ yyval.ttype = TREE_TYPE (yyvsp[-1].ttype); ;
- break;}
-case 133:
-#line 812 "c-parse.y"
-{ yyval.ttype = groktypename (yyvsp[-1].ttype); ;
- break;}
-case 141:
-#line 834 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 142:
-#line 836 "c-parse.y"
-{ if (TREE_CHAIN (yyvsp[-1].ttype)) yyvsp[-1].ttype = combine_strings (yyvsp[-1].ttype);
- yyval.ttype = yyvsp[-1].ttype;
- ;
- break;}
-case 143:
-#line 843 "c-parse.y"
-{ yyval.ttype = start_decl (yyvsp[-3].ttype, current_declspecs, 1); ;
- break;}
-case 144:
-#line 846 "c-parse.y"
-{ decl_attributes (yyvsp[-1].ttype, yyvsp[-3].ttype);
- finish_decl (yyvsp[-1].ttype, yyvsp[0].ttype, yyvsp[-4].ttype); ;
- break;}
-case 145:
-#line 849 "c-parse.y"
-{ tree d = start_decl (yyvsp[-2].ttype, current_declspecs, 0);
- decl_attributes (d, yyvsp[0].ttype);
- finish_decl (d, NULL_TREE, yyvsp[-1].ttype); ;
- break;}
-case 146:
-#line 856 "c-parse.y"
-{ yyval.ttype = start_decl (yyvsp[-3].ttype, current_declspecs, 1); ;
- break;}
-case 147:
-#line 859 "c-parse.y"
-{ decl_attributes (yyvsp[-1].ttype, yyvsp[-3].ttype);
- finish_decl (yyvsp[-1].ttype, yyvsp[0].ttype, yyvsp[-4].ttype); ;
- break;}
-case 148:
-#line 862 "c-parse.y"
-{ tree d = start_decl (yyvsp[-2].ttype, current_declspecs, 0);
- decl_attributes (d, yyvsp[0].ttype);
- finish_decl (d, NULL_TREE, yyvsp[-1].ttype); ;
- break;}
-case 149:
-#line 870 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 150:
-#line 872 "c-parse.y"
-{ yyval.ttype = yyvsp[-2].ttype; ;
- break;}
-case 151:
-#line 877 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 152:
-#line 879 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-2].ttype); ;
- break;}
-case 153:
-#line 884 "c-parse.y"
-{ if (strcmp (IDENTIFIER_POINTER (yyvsp[0].ttype), "packed"))
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER (yyvsp[0].ttype));
- yyval.ttype = yyvsp[0].ttype; ;
- break;}
-case 154:
-#line 889 "c-parse.y"
-{ /* If not "mode (m)", then issue warning. */
- if (strcmp (IDENTIFIER_POINTER (yyvsp[-3].ttype), "mode") != 0)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER (yyvsp[-3].ttype));
- yyval.ttype = yyvsp[-3].ttype;
- }
- else
- yyval.ttype = tree_cons (yyvsp[-3].ttype, yyvsp[-1].ttype, NULL_TREE); ;
- break;}
-case 155:
-#line 899 "c-parse.y"
-{ /* if not "aligned(n)", then issue warning */
- if (strcmp (IDENTIFIER_POINTER (yyvsp[-3].ttype), "aligned") != 0
- || TREE_CODE (yyvsp[-1].ttype) != INTEGER_CST)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER (yyvsp[-3].ttype));
- yyval.ttype = yyvsp[-3].ttype;
- }
- else
- yyval.ttype = tree_cons (yyvsp[-3].ttype, yyvsp[-1].ttype, NULL_TREE); ;
- break;}
-case 156:
-#line 910 "c-parse.y"
-{ /* if not "format(...)", then issue warning */
- if (strcmp (IDENTIFIER_POINTER (yyvsp[-7].ttype), "format") != 0
- || TREE_CODE (yyvsp[-3].ttype) != INTEGER_CST
- || TREE_CODE (yyvsp[-1].ttype) != INTEGER_CST)
- {
- warning ("`%s' attribute directive ignored",
- IDENTIFIER_POINTER (yyvsp[-7].ttype));
- yyval.ttype = yyvsp[-7].ttype;
- }
- else
- yyval.ttype = tree_cons (yyvsp[-7].ttype,
- tree_cons (yyvsp[-5].ttype,
- tree_cons (yyvsp[-3].ttype, yyvsp[-1].ttype, NULL_TREE),
- NULL_TREE),
- NULL_TREE); ;
- break;}
-case 158:
-#line 930 "c-parse.y"
-{ yyval.ttype = build_nt (CONSTRUCTOR, NULL_TREE, NULL_TREE);
- if (pedantic)
- pedwarn ("ANSI C forbids empty initializer braces"); ;
- break;}
-case 159:
-#line 934 "c-parse.y"
-{ yyval.ttype = build_nt (CONSTRUCTOR, NULL_TREE, nreverse (yyvsp[-1].ttype)); ;
- break;}
-case 160:
-#line 936 "c-parse.y"
-{ yyval.ttype = build_nt (CONSTRUCTOR, NULL_TREE, nreverse (yyvsp[-2].ttype)); ;
- break;}
-case 161:
-#line 938 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 162:
-#line 945 "c-parse.y"
-{ yyval.ttype = build_tree_list (NULL_TREE, yyvsp[0].ttype); ;
- break;}
-case 163:
-#line 947 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-2].ttype); ;
- break;}
-case 164:
-#line 952 "c-parse.y"
-{ yyval.ttype = build_tree_list (tree_cons (yyvsp[-4].ttype, NULL_TREE,
- build_tree_list (yyvsp[-2].ttype, NULL_TREE)),
- yyvsp[0].ttype); ;
- break;}
-case 165:
-#line 956 "c-parse.y"
-{ yyval.ttype = tree_cons (tree_cons (yyvsp[-4].ttype, NULL_TREE,
- build_tree_list (yyvsp[-2].ttype, NULL_TREE)),
- yyvsp[0].ttype,
- yyvsp[-7].ttype); ;
- break;}
-case 166:
-#line 961 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 167:
-#line 963 "c-parse.y"
-{ yyval.ttype = tree_cons (yyvsp[-2].ttype, yyvsp[0].ttype, yyvsp[-5].ttype); ;
- break;}
-case 168:
-#line 965 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 169:
-#line 967 "c-parse.y"
-{ yyval.ttype = tree_cons (yyvsp[-2].ttype, yyvsp[0].ttype, yyvsp[-4].ttype); ;
- break;}
-case 170:
-#line 972 "c-parse.y"
-{ push_c_function_context ();
- if (! start_function (current_declspecs, yyvsp[0].ttype, 1))
- {
- pop_c_function_context ();
- YYERROR1;
- }
- reinit_parse_for_function ();
- store_parm_decls (); ;
- break;}
-case 171:
-#line 987 "c-parse.y"
-{ finish_function (1);
- pop_c_function_context (); ;
- break;}
-case 172:
-#line 993 "c-parse.y"
-{ push_c_function_context ();
- if (! start_function (current_declspecs, yyvsp[0].ttype, 1))
- {
- pop_c_function_context ();
- YYERROR1;
- }
- reinit_parse_for_function ();
- store_parm_decls (); ;
- break;}
-case 173:
-#line 1008 "c-parse.y"
-{ finish_function (1);
- pop_c_function_context (); ;
- break;}
-case 176:
-#line 1024 "c-parse.y"
-{ yyval.ttype = yyvsp[-1].ttype; ;
- break;}
-case 177:
-#line 1026 "c-parse.y"
-{ yyval.ttype = build_nt (CALL_EXPR, yyvsp[-2].ttype, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 178:
-#line 1031 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-3].ttype, yyvsp[-1].ttype); ;
- break;}
-case 179:
-#line 1033 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-2].ttype, NULL_TREE); ;
- break;}
-case 180:
-#line 1035 "c-parse.y"
-{ yyval.ttype = make_pointer_declarator (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 182:
-#line 1046 "c-parse.y"
-{ yyval.ttype = build_nt (CALL_EXPR, yyvsp[-2].ttype, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 183:
-#line 1051 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-3].ttype, yyvsp[-1].ttype); ;
- break;}
-case 184:
-#line 1053 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-2].ttype, NULL_TREE); ;
- break;}
-case 185:
-#line 1055 "c-parse.y"
-{ yyval.ttype = make_pointer_declarator (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 187:
-#line 1064 "c-parse.y"
-{ yyval.ttype = build_nt (CALL_EXPR, yyvsp[-2].ttype, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 188:
-#line 1069 "c-parse.y"
-{ yyval.ttype = yyvsp[-1].ttype; ;
- break;}
-case 189:
-#line 1071 "c-parse.y"
-{ yyval.ttype = make_pointer_declarator (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 190:
-#line 1073 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-3].ttype, yyvsp[-1].ttype); ;
- break;}
-case 191:
-#line 1075 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-2].ttype, NULL_TREE); ;
- break;}
-case 193:
-#line 1081 "c-parse.y"
-{ yyval.ttype = start_struct (RECORD_TYPE, yyvsp[-1].ttype);
- /* Start scope of tag before parsing components. */
- ;
- break;}
-case 194:
-#line 1085 "c-parse.y"
-{ yyval.ttype = finish_struct (yyvsp[-2].ttype, yyvsp[-1].ttype);
- /* Really define the structure. */
- ;
- break;}
-case 195:
-#line 1089 "c-parse.y"
-{ yyval.ttype = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
- yyvsp[-1].ttype); ;
- break;}
-case 196:
-#line 1092 "c-parse.y"
-{ yyval.ttype = xref_tag (RECORD_TYPE, yyvsp[0].ttype); ;
- break;}
-case 197:
-#line 1094 "c-parse.y"
-{ yyval.ttype = start_struct (UNION_TYPE, yyvsp[-1].ttype); ;
- break;}
-case 198:
-#line 1096 "c-parse.y"
-{ yyval.ttype = finish_struct (yyvsp[-2].ttype, yyvsp[-1].ttype); ;
- break;}
-case 199:
-#line 1098 "c-parse.y"
-{ yyval.ttype = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
- yyvsp[-1].ttype); ;
- break;}
-case 200:
-#line 1101 "c-parse.y"
-{ yyval.ttype = xref_tag (UNION_TYPE, yyvsp[0].ttype); ;
- break;}
-case 201:
-#line 1103 "c-parse.y"
-{ yyvsp[0].itype = suspend_momentary ();
- yyval.ttype = start_enum (yyvsp[-1].ttype); ;
- break;}
-case 202:
-#line 1106 "c-parse.y"
-{ yyval.ttype = finish_enum (yyvsp[-3].ttype, nreverse (yyvsp[-2].ttype));
- resume_momentary (yyvsp[-4].itype); ;
- break;}
-case 203:
-#line 1109 "c-parse.y"
-{ yyvsp[0].itype = suspend_momentary ();
- yyval.ttype = start_enum (NULL_TREE); ;
- break;}
-case 204:
-#line 1112 "c-parse.y"
-{ yyval.ttype = finish_enum (yyvsp[-3].ttype, nreverse (yyvsp[-2].ttype));
- resume_momentary (yyvsp[-4].itype); ;
- break;}
-case 205:
-#line 1115 "c-parse.y"
-{ yyval.ttype = xref_tag (ENUMERAL_TYPE, yyvsp[0].ttype); ;
- break;}
-case 209:
-#line 1126 "c-parse.y"
-{ if (pedantic) pedwarn ("comma at end of enumerator list"); ;
- break;}
-case 210:
-#line 1131 "c-parse.y"
-{ yyval.ttype = yyvsp[0].ttype; ;
- break;}
-case 211:
-#line 1133 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[-1].ttype, yyvsp[0].ttype);
- pedwarn ("no semicolon at end of struct or union"); ;
- break;}
-case 212:
-#line 1138 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 213:
-#line 1140 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[-2].ttype, yyvsp[-1].ttype); ;
- break;}
-case 214:
-#line 1142 "c-parse.y"
-{ if (pedantic)
- pedwarn ("extra semicolon in struct or union specified"); ;
- break;}
-case 215:
-#line 1157 "c-parse.y"
-{ yyval.ttype = yyvsp[0].ttype;
- current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-1].itype); ;
- break;}
-case 216:
-#line 1162 "c-parse.y"
-{ if (pedantic)
- pedwarn ("ANSI C forbids member declarations with no members");
- shadow_tag(yyvsp[0].ttype);
- yyval.ttype = NULL_TREE; ;
- break;}
-case 217:
-#line 1167 "c-parse.y"
-{ yyval.ttype = yyvsp[0].ttype;
- current_declspecs = TREE_VALUE (declspec_stack);
- declspec_stack = TREE_CHAIN (declspec_stack);
- resume_momentary (yyvsp[-1].itype); ;
- break;}
-case 218:
-#line 1172 "c-parse.y"
-{ if (pedantic)
- pedwarn ("ANSI C forbids member declarations with no members");
- shadow_tag(yyvsp[0].ttype);
- yyval.ttype = NULL_TREE; ;
- break;}
-case 219:
-#line 1177 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 221:
-#line 1183 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 222:
-#line 1188 "c-parse.y"
-{ yyval.ttype = grokfield (yyvsp[-3].filename, yyvsp[-2].lineno, yyvsp[-1].ttype, current_declspecs, NULL_TREE);
- decl_attributes (yyval.ttype, yyvsp[0].ttype); ;
- break;}
-case 223:
-#line 1192 "c-parse.y"
-{ yyval.ttype = grokfield (yyvsp[-5].filename, yyvsp[-4].lineno, yyvsp[-3].ttype, current_declspecs, yyvsp[-1].ttype);
- decl_attributes (yyval.ttype, yyvsp[0].ttype); ;
- break;}
-case 224:
-#line 1195 "c-parse.y"
-{ yyval.ttype = grokfield (yyvsp[-4].filename, yyvsp[-3].lineno, NULL_TREE, current_declspecs, yyvsp[-1].ttype);
- decl_attributes (yyval.ttype, yyvsp[0].ttype); ;
- break;}
-case 226:
-#line 1207 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[0].ttype, yyvsp[-2].ttype); ;
- break;}
-case 227:
-#line 1213 "c-parse.y"
-{ yyval.ttype = build_enumerator (yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 228:
-#line 1215 "c-parse.y"
-{ yyval.ttype = build_enumerator (yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 229:
-#line 1220 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 230:
-#line 1222 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 231:
-#line 1227 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 233:
-#line 1233 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 234:
-#line 1235 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-1].ttype); ;
- break;}
-case 235:
-#line 1240 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 236:
-#line 1242 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, yyvsp[0].ttype, yyvsp[-1].ttype); ;
- break;}
-case 237:
-#line 1247 "c-parse.y"
-{ yyval.ttype = yyvsp[-1].ttype; ;
- break;}
-case 238:
-#line 1250 "c-parse.y"
-{ yyval.ttype = make_pointer_declarator (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 239:
-#line 1252 "c-parse.y"
-{ yyval.ttype = make_pointer_declarator (yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 240:
-#line 1254 "c-parse.y"
-{ yyval.ttype = build_nt (CALL_EXPR, yyvsp[-2].ttype, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 241:
-#line 1256 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-3].ttype, yyvsp[-1].ttype); ;
- break;}
-case 242:
-#line 1258 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, yyvsp[-2].ttype, NULL_TREE); ;
- break;}
-case 243:
-#line 1260 "c-parse.y"
-{ yyval.ttype = build_nt (CALL_EXPR, NULL_TREE, yyvsp[0].ttype, NULL_TREE); ;
- break;}
-case 244:
-#line 1262 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, NULL_TREE, yyvsp[-1].ttype); ;
- break;}
-case 245:
-#line 1264 "c-parse.y"
-{ yyval.ttype = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); ;
- break;}
-case 252:
-#line 1286 "c-parse.y"
-{ emit_line_note (input_filename, lineno);
- pushlevel (0);
- clear_last_expr ();
- push_momentary ();
- expand_start_bindings (0);
- ;
- break;}
-case 254:
-#line 1299 "c-parse.y"
-{ if (pedantic)
- pedwarn ("ANSI C forbids label declarations"); ;
- break;}
-case 257:
-#line 1310 "c-parse.y"
-{ tree link;
- for (link = yyvsp[-1].ttype; link; link = TREE_CHAIN (link))
- {
- tree label = shadow_label (TREE_VALUE (link));
- C_DECLARED_LABEL_FLAG (label) = 1;
- declare_nonlocal_label (label);
- }
- ;
- break;}
-case 258:
-#line 1324 "c-parse.y"
-{;
- break;}
-case 260:
-#line 1329 "c-parse.y"
-{ yyval.ttype = convert (void_type_node, integer_zero_node); ;
- break;}
-case 261:
-#line 1331 "c-parse.y"
-{ emit_line_note (input_filename, lineno);
- expand_end_bindings (getdecls (), 1, 0);
- yyval.ttype = poplevel (1, 1, 0);
- pop_momentary (); ;
- break;}
-case 262:
-#line 1336 "c-parse.y"
-{ emit_line_note (input_filename, lineno);
- expand_end_bindings (getdecls (), kept_level_p (), 0);
- yyval.ttype = poplevel (kept_level_p (), 0, 0);
- pop_momentary (); ;
- break;}
-case 263:
-#line 1341 "c-parse.y"
-{ emit_line_note (input_filename, lineno);
- expand_end_bindings (getdecls (), kept_level_p (), 0);
- yyval.ttype = poplevel (kept_level_p (), 0, 0);
- pop_momentary (); ;
- break;}
-case 266:
-#line 1358 "c-parse.y"
-{ emit_line_note (yyvsp[-5].filename, yyvsp[-4].lineno);
- expand_start_cond (truthvalue_conversion (yyvsp[-1].ttype), 0);
- yyvsp[-3].itype = stmt_count;
- if_stmt_file = yyvsp[-5].filename;
- if_stmt_line = yyvsp[-4].lineno;
- position_after_white_space (); ;
- break;}
-case 267:
-#line 1371 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-2].filename, yyvsp[-1].lineno);
- /* See comment in `while' alternative, above. */
- emit_nop ();
- expand_start_loop_continue_elsewhere (1);
- position_after_white_space (); ;
- break;}
-case 268:
-#line 1378 "c-parse.y"
-{ expand_loop_continue_here (); ;
- break;}
-case 269:
-#line 1382 "c-parse.y"
-{ yyval.filename = input_filename; ;
- break;}
-case 270:
-#line 1386 "c-parse.y"
-{ yyval.lineno = lineno; ;
- break;}
-case 271:
-#line 1391 "c-parse.y"
-{ ;
- break;}
-case 272:
-#line 1396 "c-parse.y"
-{ ;
- break;}
-case 273:
-#line 1401 "c-parse.y"
-{ ;
- break;}
-case 275:
-#line 1407 "c-parse.y"
-{ int next;
- position_after_white_space ();
- next = getc (finput);
- ungetc (next, finput);
- if (pedantic && next == '}')
- pedwarn ("ANSI C forbids label at end of compound statement");
- ;
- break;}
-case 276:
-#line 1419 "c-parse.y"
-{ stmt_count++; ;
- break;}
-case 278:
-#line 1422 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-3].filename, yyvsp[-2].lineno);
- iterator_expand (yyvsp[-1].ttype);
- clear_momentary (); ;
- break;}
-case 279:
-#line 1427 "c-parse.y"
-{ expand_start_else ();
- yyvsp[-1].itype = stmt_count;
- position_after_white_space (); ;
- break;}
-case 280:
-#line 1431 "c-parse.y"
-{ expand_end_cond ();
- if (extra_warnings && stmt_count == yyvsp[-3].itype)
- warning ("empty body in an else-statement"); ;
- break;}
-case 281:
-#line 1435 "c-parse.y"
-{ expand_end_cond ();
- if (extra_warnings && stmt_count == yyvsp[0].itype)
- warning_with_file_and_line (if_stmt_file, if_stmt_line,
- "empty body in an if-statement"); ;
- break;}
-case 282:
-#line 1443 "c-parse.y"
-{ expand_end_cond (); ;
- break;}
-case 283:
-#line 1445 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-2].filename, yyvsp[-1].lineno);
- /* The emit_nop used to come before emit_line_note,
- but that made the nop seem like part of the preceding line.
- And that was confusing when the preceding line was
- inside of an if statement and was not really executed.
- I think it ought to work to put the nop after the line number.
- We will see. --rms, July 15, 1991. */
- emit_nop (); ;
- break;}
-case 284:
-#line 1455 "c-parse.y"
-{ /* Don't start the loop till we have succeeded
- in parsing the end test. This is to make sure
- that we end every loop we start. */
- expand_start_loop (1);
- emit_line_note (input_filename, lineno);
- expand_exit_loop_if_false (NULL_PTR,
- truthvalue_conversion (yyvsp[-1].ttype));
- position_after_white_space (); ;
- break;}
-case 285:
-#line 1464 "c-parse.y"
-{ expand_end_loop (); ;
- break;}
-case 286:
-#line 1467 "c-parse.y"
-{ emit_line_note (input_filename, lineno);
- expand_exit_loop_if_false (NULL_PTR,
- truthvalue_conversion (yyvsp[-2].ttype));
- expand_end_loop ();
- clear_momentary (); ;
- break;}
-case 287:
-#line 1474 "c-parse.y"
-{ expand_end_loop ();
- clear_momentary (); ;
- break;}
-case 288:
-#line 1478 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-5].filename, yyvsp[-4].lineno);
- /* See comment in `while' alternative, above. */
- emit_nop ();
- if (yyvsp[-1].ttype) c_expand_expr_stmt (yyvsp[-1].ttype);
- /* Next step is to call expand_start_loop_continue_elsewhere,
- but wait till after we parse the entire for (...).
- Otherwise, invalid input might cause us to call that
- fn without calling expand_end_loop. */
- ;
- break;}
-case 289:
-#line 1490 "c-parse.y"
-{ yyvsp[0].lineno = lineno;
- yyval.filename = input_filename; ;
- break;}
-case 290:
-#line 1493 "c-parse.y"
-{
- /* Start the loop. Doing this after parsing
- all the expressions ensures we will end the loop. */
- expand_start_loop_continue_elsewhere (1);
- /* Emit the end-test, with a line number. */
- emit_line_note (yyvsp[-2].filename, yyvsp[-3].lineno);
- if (yyvsp[-4].ttype)
- expand_exit_loop_if_false (NULL_PTR,
- truthvalue_conversion (yyvsp[-4].ttype));
- /* Don't let the tree nodes for $9 be discarded by
- clear_momentary during the parsing of the next stmt. */
- push_momentary ();
- yyvsp[-3].lineno = lineno;
- yyvsp[-2].filename = input_filename;
- position_after_white_space (); ;
- break;}
-case 291:
-#line 1509 "c-parse.y"
-{ /* Emit the increment expression, with a line number. */
- emit_line_note (yyvsp[-4].filename, yyvsp[-5].lineno);
- expand_loop_continue_here ();
- if (yyvsp[-3].ttype)
- c_expand_expr_stmt (yyvsp[-3].ttype);
- pop_momentary ();
- expand_end_loop (); ;
- break;}
-case 292:
-#line 1517 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-5].filename, yyvsp[-4].lineno);
- c_expand_start_case (yyvsp[-1].ttype);
- /* Don't let the tree nodes for $3 be discarded by
- clear_momentary during the parsing of the next stmt. */
- push_momentary ();
- position_after_white_space (); ;
- break;}
-case 293:
-#line 1525 "c-parse.y"
-{ expand_end_case (yyvsp[-3].ttype);
- pop_momentary (); ;
- break;}
-case 294:
-#line 1528 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-3].filename, yyvsp[-2].lineno);
- if ( ! expand_exit_something ())
- error ("break statement not within loop or switch"); ;
- break;}
-case 295:
-#line 1533 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-3].filename, yyvsp[-2].lineno);
- if (! expand_continue_loop (NULL_PTR))
- error ("continue statement not within a loop"); ;
- break;}
-case 296:
-#line 1538 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-3].filename, yyvsp[-2].lineno);
- c_expand_return (NULL_TREE); ;
- break;}
-case 297:
-#line 1542 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-4].filename, yyvsp[-3].lineno);
- c_expand_return (yyvsp[-1].ttype); ;
- break;}
-case 298:
-#line 1546 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-7].filename, yyvsp[-6].lineno);
- STRIP_NOPS (yyvsp[-2].ttype);
- if ((TREE_CODE (yyvsp[-2].ttype) == ADDR_EXPR
- && TREE_CODE (TREE_OPERAND (yyvsp[-2].ttype, 0)) == STRING_CST)
- || TREE_CODE (yyvsp[-2].ttype) == STRING_CST)
- expand_asm (yyvsp[-2].ttype);
- else
- error ("argument of `asm' is not a constant string"); ;
- break;}
-case 299:
-#line 1557 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-9].filename, yyvsp[-8].lineno);
- c_expand_asm_operands (yyvsp[-4].ttype, yyvsp[-2].ttype, NULL_TREE, NULL_TREE,
- yyvsp[-6].ttype == ridpointers[(int)RID_VOLATILE],
- input_filename, lineno); ;
- break;}
-case 300:
-#line 1564 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-11].filename, yyvsp[-10].lineno);
- c_expand_asm_operands (yyvsp[-6].ttype, yyvsp[-4].ttype, yyvsp[-2].ttype, NULL_TREE,
- yyvsp[-8].ttype == ridpointers[(int)RID_VOLATILE],
- input_filename, lineno); ;
- break;}
-case 301:
-#line 1572 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-13].filename, yyvsp[-12].lineno);
- c_expand_asm_operands (yyvsp[-8].ttype, yyvsp[-6].ttype, yyvsp[-4].ttype, yyvsp[-2].ttype,
- yyvsp[-10].ttype == ridpointers[(int)RID_VOLATILE],
- input_filename, lineno); ;
- break;}
-case 302:
-#line 1578 "c-parse.y"
-{ tree decl;
- stmt_count++;
- emit_line_note (yyvsp[-4].filename, yyvsp[-3].lineno);
- decl = lookup_label (yyvsp[-1].ttype);
- if (decl != 0)
- {
- TREE_USED (decl) = 1;
- expand_goto (decl);
- }
- ;
- break;}
-case 303:
-#line 1589 "c-parse.y"
-{ stmt_count++;
- emit_line_note (yyvsp[-5].filename, yyvsp[-4].lineno);
- expand_computed_goto (convert (ptr_type_node, yyvsp[-1].ttype)); ;
- break;}
-case 306:
-#line 1602 "c-parse.y"
-{
- /* The value returned by this action is */
- /* 1 if everything is OK */
- /* 0 in case of error or already bound iterator */
-
- yyval.itype = 0;
- if (TREE_CODE (yyvsp[-1].ttype) != VAR_DECL)
- error ("invalid `for (ITERATOR)' syntax");
- if (! ITERATOR_P (yyvsp[-1].ttype))
- error ("`%s' is not an iterator",
- IDENTIFIER_POINTER (DECL_NAME (yyvsp[-1].ttype)));
- else if (ITERATOR_BOUND_P (yyvsp[-1].ttype))
- error ("`for (%s)' inside expansion of same iterator",
- IDENTIFIER_POINTER (DECL_NAME (yyvsp[-1].ttype)));
- else
- {
- yyval.itype = 1;
- iterator_for_loop_start (yyvsp[-1].ttype);
- }
- ;
- break;}
-case 307:
-#line 1623 "c-parse.y"
-{
- if (yyvsp[-1].itype)
- iterator_for_loop_end (yyvsp[-3].ttype);
- ;
- break;}
-case 308:
-#line 1655 "c-parse.y"
-{ register tree value = check_case_value (yyvsp[-1].ttype);
- register tree label
- = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
-
- stmt_count++;
-
- if (value != error_mark_node)
- {
- tree duplicate;
- int success = pushcase (value, label, &duplicate);
- if (success == 1)
- error ("case label not within a switch statement");
- else if (success == 2)
- {
- error ("duplicate case value");
- error_with_decl (duplicate, "this is the first entry for that value");
- }
- else if (success == 3)
- warning ("case value out of range");
- else if (success == 5)
- error ("case label within scope of cleanup or variable array");
- }
- position_after_white_space (); ;
- break;}
-case 309:
-#line 1679 "c-parse.y"
-{ register tree value1 = check_case_value (yyvsp[-3].ttype);
- register tree value2 = check_case_value (yyvsp[-1].ttype);
- register tree label
- = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
-
- stmt_count++;
-
- if (value1 != error_mark_node && value2 != error_mark_node)
- {
- tree duplicate;
- int success = pushcase_range (value1, value2, label,
- &duplicate);
- if (success == 1)
- error ("case label not within a switch statement");
- else if (success == 2)
- {
- error ("duplicate case value");
- error_with_decl (duplicate, "this is the first entry for that value");
- }
- else if (success == 3)
- warning ("case value out of range");
- else if (success == 4)
- warning ("empty case range");
- else if (success == 5)
- error ("case label within scope of cleanup or variable array");
- }
- position_after_white_space (); ;
- break;}
-case 310:
-#line 1707 "c-parse.y"
-{
- tree duplicate;
- register tree label
- = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
- int success = pushcase (NULL_TREE, label, &duplicate);
- stmt_count++;
- if (success == 1)
- error ("default label not within a switch statement");
- else if (success == 2)
- {
- error ("multiple default labels in one switch");
- error_with_decl (duplicate, "this is the first default label");
- }
- position_after_white_space (); ;
- break;}
-case 311:
-#line 1722 "c-parse.y"
-{ tree label = define_label (input_filename, lineno, yyvsp[-1].ttype);
- stmt_count++;
- emit_nop ();
- if (label)
- expand_label (label);
- position_after_white_space (); ;
- break;}
-case 312:
-#line 1734 "c-parse.y"
-{ emit_line_note (input_filename, lineno); ;
- break;}
-case 313:
-#line 1736 "c-parse.y"
-{ emit_line_note (input_filename, lineno); ;
- break;}
-case 314:
-#line 1741 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 316:
-#line 1748 "c-parse.y"
-{ yyval.ttype = NULL_TREE; ;
- break;}
-case 319:
-#line 1755 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[-2].ttype, yyvsp[0].ttype); ;
- break;}
-case 320:
-#line 1760 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-3].ttype, yyvsp[-1].ttype); ;
- break;}
-case 321:
-#line 1765 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, combine_strings (yyvsp[0].ttype), NULL_TREE); ;
- break;}
-case 322:
-#line 1767 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, combine_strings (yyvsp[0].ttype), yyvsp[-2].ttype); ;
- break;}
-case 323:
-#line 1773 "c-parse.y"
-{ pushlevel (0);
- clear_parm_order ();
- declare_parm_level (0); ;
- break;}
-case 324:
-#line 1777 "c-parse.y"
-{ yyval.ttype = yyvsp[0].ttype;
- parmlist_tags_warning ();
- poplevel (0, 0, 0); ;
- break;}
-case 326:
-#line 1785 "c-parse.y"
-{ tree parm;
- if (pedantic)
- pedwarn ("ANSI C forbids forward parameter declarations");
- /* Mark the forward decls as such. */
- for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
- TREE_ASM_WRITTEN (parm) = 1;
- clear_parm_order (); ;
- break;}
-case 327:
-#line 1793 "c-parse.y"
-{ yyval.ttype = yyvsp[0].ttype; ;
- break;}
-case 328:
-#line 1795 "c-parse.y"
-{ yyval.ttype = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); ;
- break;}
-case 329:
-#line 1801 "c-parse.y"
-{ yyval.ttype = get_parm_info (0); ;
- break;}
-case 330:
-#line 1803 "c-parse.y"
-{ yyval.ttype = get_parm_info (0);
- if (pedantic)
- pedwarn ("ANSI C requires a named argument before `...'");
- ;
- break;}
-case 331:
-#line 1808 "c-parse.y"
-{ yyval.ttype = get_parm_info (1); ;
- break;}
-case 332:
-#line 1810 "c-parse.y"
-{ yyval.ttype = get_parm_info (0); ;
- break;}
-case 333:
-#line 1815 "c-parse.y"
-{ push_parm_decl (yyvsp[0].ttype); ;
- break;}
-case 334:
-#line 1817 "c-parse.y"
-{ push_parm_decl (yyvsp[0].ttype); ;
- break;}
-case 335:
-#line 1824 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-1].ttype, yyvsp[0].ttype) ; ;
- break;}
-case 336:
-#line 1826 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-1].ttype, yyvsp[0].ttype) ; ;
- break;}
-case 337:
-#line 1828 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 338:
-#line 1830 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-1].ttype, yyvsp[0].ttype) ; ;
- break;}
-case 339:
-#line 1832 "c-parse.y"
-{ yyval.ttype = build_tree_list (yyvsp[-1].ttype, yyvsp[0].ttype); ;
- break;}
-case 340:
-#line 1839 "c-parse.y"
-{ pushlevel (0);
- clear_parm_order ();
- declare_parm_level (1); ;
- break;}
-case 341:
-#line 1843 "c-parse.y"
-{ yyval.ttype = yyvsp[0].ttype;
- parmlist_tags_warning ();
- poplevel (0, 0, 0); ;
- break;}
-case 343:
-#line 1851 "c-parse.y"
-{ tree t;
- for (t = yyvsp[-1].ttype; t; t = TREE_CHAIN (t))
- if (TREE_VALUE (t) == NULL_TREE)
- error ("`...' in old-style identifier list");
- yyval.ttype = tree_cons (NULL_TREE, NULL_TREE, yyvsp[-1].ttype); ;
- break;}
-case 344:
-#line 1861 "c-parse.y"
-{ yyval.ttype = build_tree_list (NULL_TREE, yyvsp[0].ttype); ;
- break;}
-case 345:
-#line 1863 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[-2].ttype, build_tree_list (NULL_TREE, yyvsp[0].ttype)); ;
- break;}
-case 346:
-#line 1869 "c-parse.y"
-{ yyval.ttype = build_tree_list (NULL_TREE, yyvsp[0].ttype); ;
- break;}
-case 347:
-#line 1871 "c-parse.y"
-{ yyval.ttype = chainon (yyvsp[-2].ttype, build_tree_list (NULL_TREE, yyvsp[0].ttype)); ;
- break;}
-}
- /* the action file gets copied in in place of this dollarsign */
-#line 440 "bison.simple"
-
- yyvsp -= yylen;
- yyssp -= yylen;
-#ifdef YYLSP_NEEDED
- yylsp -= yylen;
-#endif
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
-#endif
-
- *++yyvsp = yyval;
-
-#ifdef YYLSP_NEEDED
- yylsp++;
- if (yylen == 0)
- {
- yylsp->first_line = yylloc.first_line;
- yylsp->first_column = yylloc.first_column;
- yylsp->last_line = (yylsp-1)->last_line;
- yylsp->last_column = (yylsp-1)->last_column;
- yylsp->text = 0;
- }
- else
- {
- yylsp->last_line = (yylsp+yylen-1)->last_line;
- yylsp->last_column = (yylsp+yylen-1)->last_column;
- }
-#endif
-
- /* Now "shift" the result of the reduction.
- Determine what state that goes to,
- based on the state we popped back to
- and the rule number reduced by. */
-
- yyn = yyr1[yyn];
-
- yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
- if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
- yystate = yytable[yystate];
- else
- yystate = yydefgoto[yyn - YYNTBASE];
-
- goto yynewstate;
-
-yyerrlab: /* here on detecting error */
-
- if (! yyerrstatus)
- /* If not already recovering from an error, report this error. */
- {
- ++yynerrs;
-
-#ifdef YYERROR_VERBOSE
- yyn = yypact[yystate];
-
- if (yyn > YYFLAG && yyn < YYLAST)
- {
- int size = 0;
- char *msg;
- int x, count;
-
- count = 0;
- for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
- if (yycheck[x + yyn] == x)
- size += strlen(yytname[x]) + 15, count++;
- msg = (char *) malloc(size + 15);
- if (msg != 0)
- {
- strcpy(msg, "parse error");
-
- if (count < 5)
- {
- count = 0;
- for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
- if (yycheck[x + yyn] == x)
- {
- strcat(msg, count == 0 ? ", expecting `" : " or `");
- strcat(msg, yytname[x]);
- strcat(msg, "'");
- count++;
- }
- }
- yyerror(msg);
- free(msg);
- }
- else
- yyerror ("parse error; also virtual memory exceeded");
- }
- else
-#endif /* YYERROR_VERBOSE */
- yyerror("parse error");
- }
-
-yyerrlab1: /* here on error raised explicitly by an action */
-
- if (yyerrstatus == 3)
- {
- /* if just tried and failed to reuse lookahead token after an error, discard it. */
-
- /* return failure if at end of input */
- if (yychar == YYEOF)
- YYABORT;
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
-#endif
-
- yychar = YYEMPTY;
- }
-
- /* Else will try to reuse lookahead token
- after shifting the error token. */
-
- yyerrstatus = 3; /* Each real token shifted decrements this */
-
- goto yyerrhandle;
-
-yyerrdefault: /* current state does not do anything special for the error token. */
-
-#if 0
- /* This is wrong; only states that explicitly want error tokens
- should shift them. */
- yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
- if (yyn) goto yydefault;
-#endif
-
-yyerrpop: /* pop the current state because it cannot handle the error token */
-
- if (yyssp == yyss) YYABORT;
- yyvsp--;
- yystate = *--yyssp;
-#ifdef YYLSP_NEEDED
- yylsp--;
-#endif
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "Error: state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
-#endif
-
-yyerrhandle:
-
- yyn = yypact[yystate];
- if (yyn == YYFLAG)
- goto yyerrdefault;
-
- yyn += YYTERROR;
- if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
- goto yyerrdefault;
-
- yyn = yytable[yyn];
- if (yyn < 0)
- {
- if (yyn == YYFLAG)
- goto yyerrpop;
- yyn = -yyn;
- goto yyreduce;
- }
- else if (yyn == 0)
- goto yyerrpop;
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Shifting error token, ");
-#endif
-
- *++yyvsp = yylval;
-#ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
-#endif
-
- yystate = yyn;
- goto yynewstate;
-}
-#line 1874 "c-parse.y"
-
diff --git a/gnu/gcc2/cc1/c-pragma.c b/gnu/gcc2/cc1/c-pragma.c
deleted file mode 100644
index 9bb92661d2ba..000000000000
--- a/gnu/gcc2/cc1/c-pragma.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/* Handle #pragma, system V.4 style. Supports #pragma weak and #pragma pack.
- Copyright (C) 1992 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include <stdio.h>
-#include "config.h"
-#include "tree.h"
-
-#ifdef HANDLE_SYSV_PRAGMA
-
-/* Support #pragma weak by default if WEAK_ASM_OP is defined. */
-#if !defined (HANDLE_PRAGMA_WEAK) && defined (WEAK_ASM_OP) && defined (SET_ASM_OP)
-#define HANDLE_PRAGMA_WEAK 1
-#endif
-
-/* When structure field packing is in effect, this variable is the
- number of bits to use as the maximum alignment. When packing is not
- in effect, this is zero. */
-
-extern int maximum_field_alignment;
-
-/* File used for outputting assembler code. */
-extern FILE *asm_out_file;
-
-/* Handle one token of a pragma directive. TOKEN is the
- current token, and STRING is its printable form. */
-
-void
-handle_pragma_token (string, token)
- char *string;
- tree token;
-{
- static enum pragma_state
- {
- ps_start,
- ps_done,
- ps_bad,
- ps_weak,
- ps_name,
- ps_equals,
- ps_value,
- ps_pack,
- ps_left,
- ps_align,
- ps_right
- } state = ps_start, type;
- static char *name;
- static char *value;
- static int align;
-
- if (string == 0)
- {
- if (type == ps_pack)
- {
- if (state == ps_right)
- maximum_field_alignment = align * 8;
- else
- warning ("malformed `#pragma pack'");
- }
- else if (type == ps_weak)
- {
-#ifdef HANDLE_PRAGMA_WEAK
- if (HANDLE_PRAGMA_WEAK)
- {
- if (state == ps_name || state == ps_value)
- {
- fprintf (asm_out_file, "\t%s\t", WEAK_ASM_OP);
- ASM_OUTPUT_LABELREF (asm_out_file, name);
- fputc ('\n', asm_out_file);
- if (state == ps_value)
- {
- fprintf (asm_out_file, "\t%s\t", SET_ASM_OP);
- ASM_OUTPUT_LABELREF (asm_out_file, name);
- fputc (',', asm_out_file);
- ASM_OUTPUT_LABELREF (asm_out_file, value);
- fputc ('\n', asm_out_file);
- }
- }
- else if (! (state == ps_done || state == ps_start))
- warning ("malformed `#pragma weak'");
- }
-#endif /* HANDLE_PRAMA_WEAK */
- }
-
- type = state = ps_start;
- return;
- }
-
- switch (state)
- {
- case ps_start:
- if (token && TREE_CODE (token) == IDENTIFIER_NODE)
- {
- if (strcmp (IDENTIFIER_POINTER (token), "pack") == 0)
- type = state = ps_pack;
- else if (strcmp (IDENTIFIER_POINTER (token), "weak") == 0)
- type = state = ps_weak;
- else
- type = state = ps_done;
- }
- else
- type = state = ps_done;
- break;
-
- case ps_weak:
- if (token && TREE_CODE (token) == IDENTIFIER_NODE)
- {
- name = IDENTIFIER_POINTER (token);
- state = ps_name;
- }
- else
- state = ps_bad;
- break;
-
- case ps_name:
- state = (strcmp (string, "=") ? ps_bad : ps_equals);
- break;
-
- case ps_equals:
- if (token && TREE_CODE (token) == IDENTIFIER_NODE)
- {
- value = IDENTIFIER_POINTER (token);
- state = ps_value;
- }
- else
- state = ps_bad;
- break;
-
- case ps_value:
- state = ps_bad;
- break;
-
- case ps_pack:
- if (strcmp (string, "(") == 0)
- state = ps_left;
- else
- state = ps_bad;
- break;
-
- case ps_left:
- if (token && TREE_CODE (token) == INTEGER_CST
- && TREE_INT_CST_HIGH (token) == 0)
- switch (TREE_INT_CST_LOW (token))
- {
- case 1:
- case 2:
- case 4:
- align = TREE_INT_CST_LOW (token);
- state = ps_align;
- break;
-
- default:
- state = ps_bad;
- }
- else if (! token && strcmp (string, ")") == 0)
- {
- align = 0;
- state = ps_right;
- }
- else
- state = ps_bad;
- break;
-
- case ps_align:
- if (strcmp (string, ")") == 0)
- state = ps_right;
- else
- state = ps_bad;
- break;
-
- case ps_right:
- state = ps_bad;
- break;
-
- case ps_bad:
- case ps_done:
- break;
-
- default:
- abort ();
- }
-}
-#endif /* HANDLE_SYSV_PRAGMA */
diff --git a/gnu/gcc2/cc1/c-typeck.c b/gnu/gcc2/cc1/c-typeck.c
deleted file mode 100644
index a10fb0abcc3f..000000000000
--- a/gnu/gcc2/cc1/c-typeck.c
+++ /dev/null
@@ -1,5827 +0,0 @@
-/* Build expressions with type checking for C compiler.
- Copyright (C) 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-/* This file is part of the C front end.
- It contains routines to build C expressions given their operands,
- including computing the types of the result, C-specific error checks,
- and some optimization.
-
- There are also routines to build RETURN_STMT nodes and CASE_STMT nodes,
- and to process initializations in declarations (since they work
- like a strange sort of assignment). */
-
-#include "config.h"
-#include <stdio.h>
-#include "tree.h"
-#include "c-tree.h"
-#include "flags.h"
-
-/* Nonzero if we've already printed a "partly bracketed initializer"
- message within this initializer. */
-static int partial_bracket_mentioned = 0;
-
-extern char *index ();
-extern char *rindex ();
-
-int mark_addressable ();
-static tree convert_for_assignment ();
-static void warn_for_assignment ();
-static int function_types_compatible_p ();
-static int type_lists_compatible_p ();
-int self_promoting_args_p ();
-static int self_promoting_type_p ();
-static int comp_target_types ();
-static tree pointer_int_sum ();
-static tree pointer_diff ();
-static tree convert_sequence ();
-static tree unary_complex_lvalue ();
-static tree process_init_constructor ();
-static tree convert_arguments ();
-static char *get_spelling ();
-tree digest_init ();
-static void pedantic_lvalue_warning ();
-tree truthvalue_conversion ();
-void incomplete_type_error ();
-void readonly_warning ();
-static tree internal_build_compound_expr ();
-
-
-/* Do `exp = require_complete_type (exp);' to make sure exp
- does not have an incomplete type. (That includes void types.) */
-
-tree
-require_complete_type (value)
- tree value;
-{
- tree type = TREE_TYPE (value);
-
- /* First, detect a valid value with a complete type. */
- if (TYPE_SIZE (type) != 0
- && type != void_type_node)
- return value;
-
- incomplete_type_error (value, type);
- return error_mark_node;
-}
-
-/* Print an error message for invalid use of an incomplete type.
- VALUE is the expression that was used (or 0 if that isn't known)
- and TYPE is the type that was invalid. */
-
-void
-incomplete_type_error (value, type)
- tree value;
- tree type;
-{
- char *errmsg;
-
- /* Avoid duplicate error message. */
- if (TREE_CODE (type) == ERROR_MARK)
- return;
-
- if (value != 0 && (TREE_CODE (value) == VAR_DECL
- || TREE_CODE (value) == PARM_DECL))
- error ("`%s' has an incomplete type",
- IDENTIFIER_POINTER (DECL_NAME (value)));
- else
- {
- retry:
- /* We must print an error message. Be clever about what it says. */
-
- switch (TREE_CODE (type))
- {
- case RECORD_TYPE:
- errmsg = "invalid use of undefined type `struct %s'";
- break;
-
- case UNION_TYPE:
- errmsg = "invalid use of undefined type `union %s'";
- break;
-
- case ENUMERAL_TYPE:
- errmsg = "invalid use of undefined type `enum %s'";
- break;
-
- case VOID_TYPE:
- error ("invalid use of void expression");
- return;
-
- case ARRAY_TYPE:
- if (TYPE_DOMAIN (type))
- {
- type = TREE_TYPE (type);
- goto retry;
- }
- error ("invalid use of array with unspecified bounds");
- return;
-
- default:
- abort ();
- }
-
- if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
- error (errmsg, IDENTIFIER_POINTER (TYPE_NAME (type)));
- else
- /* If this type has a typedef-name, the TYPE_NAME is a TYPE_DECL. */
- error ("invalid use of incomplete typedef `%s'",
- IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))));
- }
-}
-
-/* Return a variant of TYPE which has all the type qualifiers of LIKE
- as well as those of TYPE. */
-
-static tree
-qualify_type (type, like)
- tree type, like;
-{
- int constflag = TYPE_READONLY (type) || TYPE_READONLY (like);
- int volflag = TYPE_VOLATILE (type) || TYPE_VOLATILE (like);
- return c_build_type_variant (type, constflag, volflag);
-}
-
-/* Return the common type of two types.
- We assume that comptypes has already been done and returned 1;
- if that isn't so, this may crash. In particular, we assume that qualifiers
- match.
-
- This is the type for the result of most arithmetic operations
- if the operands have the given two types. */
-
-tree
-common_type (t1, t2)
- tree t1, t2;
-{
- register enum tree_code code1;
- register enum tree_code code2;
-
- /* Save time if the two types are the same. */
-
- if (t1 == t2) return t1;
-
- /* If one type is nonsense, use the other. */
- if (t1 == error_mark_node)
- return t2;
- if (t2 == error_mark_node)
- return t1;
-
- /* Treat an enum type as the unsigned integer type of the same width. */
-
- if (TREE_CODE (t1) == ENUMERAL_TYPE)
- t1 = type_for_size (TYPE_PRECISION (t1), 1);
- if (TREE_CODE (t2) == ENUMERAL_TYPE)
- t2 = type_for_size (TYPE_PRECISION (t2), 1);
-
- code1 = TREE_CODE (t1);
- code2 = TREE_CODE (t2);
-
- /* If one type is complex, form the common type
- of the non-complex components,
- then make that complex. */
- if (code1 == COMPLEX_TYPE || code2 == COMPLEX_TYPE)
- {
- tree subtype1, subtype2, subtype;
- if (code1 == COMPLEX_TYPE)
- subtype1 = TREE_TYPE (t1);
- else
- subtype1 = t1;
- if (code2 == COMPLEX_TYPE)
- subtype2 = TREE_TYPE (t2);
- else
- subtype2 = t2;
- subtype = common_type (subtype1, subtype2);
- return build_complex_type (subtype);
- }
-
- switch (code1)
- {
- case INTEGER_TYPE:
- case REAL_TYPE:
- /* If only one is real, use it as the result. */
-
- if (code1 == REAL_TYPE && code2 != REAL_TYPE)
- return t1;
-
- if (code2 == REAL_TYPE && code1 != REAL_TYPE)
- return t2;
-
- /* Both real or both integers; use the one with greater precision. */
-
- if (TYPE_PRECISION (t1) > TYPE_PRECISION (t2))
- return t1;
- else if (TYPE_PRECISION (t2) > TYPE_PRECISION (t1))
- return t2;
-
- /* Same precision. Prefer longs to ints even when same size. */
-
- if (t1 == long_unsigned_type_node
- || t2 == long_unsigned_type_node)
- return long_unsigned_type_node;
-
- if (t1 == long_integer_type_node
- || t2 == long_integer_type_node)
- {
- /* But preserve unsignedness from the other type,
- since long cannot hold all the values of an unsigned int. */
- if (TREE_UNSIGNED (t1) || TREE_UNSIGNED (t2))
- return long_unsigned_type_node;
- return long_integer_type_node;
- }
-
- /* Otherwise prefer the unsigned one. */
-
- if (TREE_UNSIGNED (t1))
- return t1;
- else return t2;
-
- case POINTER_TYPE:
- /* For two pointers, do this recursively on the target type,
- and combine the qualifiers of the two types' targets. */
- /* This code was turned off; I don't know why.
- But ANSI C specifies doing this with the qualifiers.
- So I turned it on again. */
- {
- tree target = common_type (TYPE_MAIN_VARIANT (TREE_TYPE (t1)),
- TYPE_MAIN_VARIANT (TREE_TYPE (t2)));
- int constp
- = TYPE_READONLY (TREE_TYPE (t1)) || TYPE_READONLY (TREE_TYPE (t2));
- int volatilep
- = TYPE_VOLATILE (TREE_TYPE (t1)) || TYPE_VOLATILE (TREE_TYPE (t2));
- return build_pointer_type (c_build_type_variant (target, constp, volatilep));
- }
-#if 0
- return build_pointer_type (common_type (TREE_TYPE (t1), TREE_TYPE (t2)));
-#endif
-
- case ARRAY_TYPE:
- {
- tree elt = common_type (TREE_TYPE (t1), TREE_TYPE (t2));
- /* Save space: see if the result is identical to one of the args. */
- if (elt == TREE_TYPE (t1) && TYPE_DOMAIN (t1))
- return t1;
- if (elt == TREE_TYPE (t2) && TYPE_DOMAIN (t2))
- return t2;
- /* Merge the element types, and have a size if either arg has one. */
- return build_array_type (elt, TYPE_DOMAIN (TYPE_DOMAIN (t1) ? t1 : t2));
- }
-
- case FUNCTION_TYPE:
- /* Function types: prefer the one that specified arg types.
- If both do, merge the arg types. Also merge the return types. */
- {
- tree valtype = common_type (TREE_TYPE (t1), TREE_TYPE (t2));
- tree p1 = TYPE_ARG_TYPES (t1);
- tree p2 = TYPE_ARG_TYPES (t2);
- int len;
- tree newargs, n;
- int i;
-
- /* Save space: see if the result is identical to one of the args. */
- if (valtype == TREE_TYPE (t1) && ! TYPE_ARG_TYPES (t2))
- return t1;
- if (valtype == TREE_TYPE (t2) && ! TYPE_ARG_TYPES (t1))
- return t2;
-
- /* Simple way if one arg fails to specify argument types. */
- if (TYPE_ARG_TYPES (t1) == 0)
- return build_function_type (valtype, TYPE_ARG_TYPES (t2));
- if (TYPE_ARG_TYPES (t2) == 0)
- return build_function_type (valtype, TYPE_ARG_TYPES (t1));
-
- /* If both args specify argument types, we must merge the two
- lists, argument by argument. */
-
- len = list_length (p1);
- newargs = 0;
-
- for (i = 0; i < len; i++)
- newargs = tree_cons (NULL_TREE, NULL_TREE, newargs);
-
- n = newargs;
-
- for (; p1;
- p1 = TREE_CHAIN (p1), p2 = TREE_CHAIN (p2), n = TREE_CHAIN (n))
- {
- /* A null type means arg type is not specified.
- Take whatever the other function type has. */
- if (TREE_VALUE (p1) == 0)
- {
- TREE_VALUE (n) = TREE_VALUE (p2);
- goto parm_done;
- }
- if (TREE_VALUE (p2) == 0)
- {
- TREE_VALUE (n) = TREE_VALUE (p1);
- goto parm_done;
- }
-
- /* Given wait (union {union wait *u; int *i} *)
- and wait (union wait *),
- prefer union wait * as type of parm. */
- if (TREE_CODE (TREE_VALUE (p1)) == UNION_TYPE
- && TREE_VALUE (p1) != TREE_VALUE (p2))
- {
- tree memb;
- for (memb = TYPE_FIELDS (TREE_VALUE (p1));
- memb; memb = TREE_CHAIN (memb))
- if (comptypes (TREE_TYPE (memb), TREE_VALUE (p2)))
- {
- TREE_VALUE (n) = TREE_VALUE (p2);
- if (pedantic)
- pedwarn ("function types not truly compatible in ANSI C");
- goto parm_done;
- }
- }
- if (TREE_CODE (TREE_VALUE (p2)) == UNION_TYPE
- && TREE_VALUE (p2) != TREE_VALUE (p1))
- {
- tree memb;
- for (memb = TYPE_FIELDS (TREE_VALUE (p2));
- memb; memb = TREE_CHAIN (memb))
- if (comptypes (TREE_TYPE (memb), TREE_VALUE (p1)))
- {
- TREE_VALUE (n) = TREE_VALUE (p1);
- if (pedantic)
- pedwarn ("function types not truly compatible in ANSI C");
- goto parm_done;
- }
- }
- TREE_VALUE (n) = common_type (TREE_VALUE (p1), TREE_VALUE (p2));
- parm_done: ;
- }
-
- return build_function_type (valtype, newargs);
- }
-
- default:
- return t1;
- }
-
-}
-
-/* Return 1 if TYPE1 and TYPE2 are compatible types for assignment
- or various other operations. Return 2 if they are compatible
- but a warning may be needed if you use them together. */
-
-int
-comptypes (type1, type2)
- tree type1, type2;
-{
- register tree t1 = type1;
- register tree t2 = type2;
-
- /* Suppress errors caused by previously reported errors. */
-
- if (t1 == t2 || TREE_CODE (t1) == ERROR_MARK || TREE_CODE (t2) == ERROR_MARK)
- return 1;
-
- /* Treat an enum type as the unsigned integer type of the same width. */
-
- if (TREE_CODE (t1) == ENUMERAL_TYPE)
- t1 = type_for_size (TYPE_PRECISION (t1), 1);
- if (TREE_CODE (t2) == ENUMERAL_TYPE)
- t2 = type_for_size (TYPE_PRECISION (t2), 1);
-
- if (t1 == t2)
- return 1;
-
- /* Different classes of types can't be compatible. */
-
- if (TREE_CODE (t1) != TREE_CODE (t2)) return 0;
-
- /* Qualifiers must match. */
-
- if (TYPE_READONLY (t1) != TYPE_READONLY (t2))
- return 0;
- if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2))
- return 0;
-
- /* Allow for two different type nodes which have essentially the same
- definition. Note that we already checked for equality of the type
- type qualifiers (just above). */
-
- if (TYPE_MAIN_VARIANT (t1) == TYPE_MAIN_VARIANT (t2))
- return 1;
-
- switch (TREE_CODE (t1))
- {
- case POINTER_TYPE:
- return (TREE_TYPE (t1) == TREE_TYPE (t2)
- ? 1 : comptypes (TREE_TYPE (t1), TREE_TYPE (t2)));
-
- case FUNCTION_TYPE:
- return function_types_compatible_p (t1, t2);
-
- case ARRAY_TYPE:
- {
- /* 1 if no need for warning yet, 2 if warning cause has been seen. */
- int val = 1;
- tree d1 = TYPE_DOMAIN (t1);
- tree d2 = TYPE_DOMAIN (t2);
-
- /* Target types must match incl. qualifiers. */
- if (TREE_TYPE (t1) != TREE_TYPE (t2)
- && 0 == (val = comptypes (TREE_TYPE (t1), TREE_TYPE (t2))))
- return 0;
-
- /* Sizes must match unless one is missing or variable. */
- if (d1 == 0 || d2 == 0 || d1 == d2
- || TREE_CODE (TYPE_MIN_VALUE (d1)) != INTEGER_CST
- || TREE_CODE (TYPE_MIN_VALUE (d2)) != INTEGER_CST
- || TREE_CODE (TYPE_MAX_VALUE (d1)) != INTEGER_CST
- || TREE_CODE (TYPE_MAX_VALUE (d2)) != INTEGER_CST)
- return val;
-
- return (((TREE_INT_CST_LOW (TYPE_MIN_VALUE (d1))
- == TREE_INT_CST_LOW (TYPE_MIN_VALUE (d2)))
- && (TREE_INT_CST_HIGH (TYPE_MIN_VALUE (d1))
- == TREE_INT_CST_HIGH (TYPE_MIN_VALUE (d2)))
- && (TREE_INT_CST_LOW (TYPE_MAX_VALUE (d1))
- == TREE_INT_CST_LOW (TYPE_MAX_VALUE (d2)))
- && (TREE_INT_CST_HIGH (TYPE_MAX_VALUE (d1))
- == TREE_INT_CST_HIGH (TYPE_MAX_VALUE (d2))))
- ? val : 0);
- }
-
- case RECORD_TYPE:
- if (maybe_objc_comptypes (t1, t2, 0) == 1)
- return 1;
- }
- return 0;
-}
-
-/* Return 1 if TTL and TTR are pointers to types that are equivalent,
- ignoring their qualifiers. */
-
-static int
-comp_target_types (ttl, ttr)
- tree ttl, ttr;
-{
- int val;
-
- /* Give maybe_objc_comptypes a crack at letting these types through. */
- if (val = maybe_objc_comptypes (ttl, ttr, 1) >= 0)
- return val;
-
- val = comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ttl)),
- TYPE_MAIN_VARIANT (TREE_TYPE (ttr)));
-
- if (val == 2 && pedantic)
- pedwarn ("types are not quite compatible");
- return val;
-}
-
-/* Subroutines of `comptypes'. */
-
-/* Return 1 if two function types F1 and F2 are compatible.
- If either type specifies no argument types,
- the other must specify a fixed number of self-promoting arg types.
- Otherwise, if one type specifies only the number of arguments,
- the other must specify that number of self-promoting arg types.
- Otherwise, the argument types must match. */
-
-static int
-function_types_compatible_p (f1, f2)
- tree f1, f2;
-{
- tree args1, args2;
- /* 1 if no need for warning yet, 2 if warning cause has been seen. */
- int val = 1;
- int val1;
-
- if (!(TREE_TYPE (f1) == TREE_TYPE (f2)
- || (val = comptypes (TREE_TYPE (f1), TREE_TYPE (f2)))))
- return 0;
-
- args1 = TYPE_ARG_TYPES (f1);
- args2 = TYPE_ARG_TYPES (f2);
-
- /* An unspecified parmlist matches any specified parmlist
- whose argument types don't need default promotions. */
-
- if (args1 == 0)
- {
- if (!self_promoting_args_p (args2))
- return 0;
- /* If one of these types comes from a non-prototype fn definition,
- compare that with the other type's arglist.
- If they don't match, ask for a warning (but no error). */
- if (TYPE_ACTUAL_ARG_TYPES (f1)
- && 1 != type_lists_compatible_p (args2, TYPE_ACTUAL_ARG_TYPES (f1)))
- val = 2;
- return val;
- }
- if (args2 == 0)
- {
- if (!self_promoting_args_p (args1))
- return 0;
- if (TYPE_ACTUAL_ARG_TYPES (f2)
- && 1 != type_lists_compatible_p (args1, TYPE_ACTUAL_ARG_TYPES (f2)))
- val = 2;
- return val;
- }
-
- /* Both types have argument lists: compare them and propagate results. */
- val1 = type_lists_compatible_p (args1, args2);
- return val1 != 1 ? val1 : val;
-}
-
-/* Check two lists of types for compatibility,
- returning 0 for incompatible, 1 for compatible,
- or 2 for compatible with warning. */
-
-static int
-type_lists_compatible_p (args1, args2)
- tree args1, args2;
-{
- /* 1 if no need for warning yet, 2 if warning cause has been seen. */
- int val = 1;
- int newval;
-
- while (1)
- {
- if (args1 == 0 && args2 == 0)
- return val;
- /* If one list is shorter than the other,
- they fail to match. */
- if (args1 == 0 || args2 == 0)
- return 0;
- /* A null pointer instead of a type
- means there is supposed to be an argument
- but nothing is specified about what type it has.
- So match anything that self-promotes. */
- if (TREE_VALUE (args1) == 0)
- {
- if (! self_promoting_type_p (TREE_VALUE (args2)))
- return 0;
- }
- else if (TREE_VALUE (args2) == 0)
- {
- if (! self_promoting_type_p (TREE_VALUE (args1)))
- return 0;
- }
- else if (! (newval = comptypes (TREE_VALUE (args1), TREE_VALUE (args2))))
- {
- /* Allow wait (union {union wait *u; int *i} *)
- and wait (union wait *) to be compatible. */
- if (TREE_CODE (TREE_VALUE (args1)) == UNION_TYPE
- && TYPE_NAME (TREE_VALUE (args1)) == 0
- && TREE_CODE (TYPE_SIZE (TREE_VALUE (args1))) == INTEGER_CST
- && tree_int_cst_equal (TYPE_SIZE (TREE_VALUE (args1)),
- TYPE_SIZE (TREE_VALUE (args2))))
- {
- tree memb;
- for (memb = TYPE_FIELDS (TREE_VALUE (args1));
- memb; memb = TREE_CHAIN (memb))
- if (comptypes (TREE_TYPE (memb), TREE_VALUE (args2)))
- break;
- if (memb == 0)
- return 0;
- }
- else if (TREE_CODE (TREE_VALUE (args2)) == UNION_TYPE
- && TYPE_NAME (TREE_VALUE (args2)) == 0
- && TREE_CODE (TYPE_SIZE (TREE_VALUE (args2))) == INTEGER_CST
- && tree_int_cst_equal (TYPE_SIZE (TREE_VALUE (args2)),
- TYPE_SIZE (TREE_VALUE (args1))))
- {
- tree memb;
- for (memb = TYPE_FIELDS (TREE_VALUE (args2));
- memb; memb = TREE_CHAIN (memb))
- if (comptypes (TREE_TYPE (memb), TREE_VALUE (args1)))
- break;
- if (memb == 0)
- return 0;
- }
- else
- return 0;
- }
-
- /* comptypes said ok, but record if it said to warn. */
- if (newval > val)
- val = newval;
-
- args1 = TREE_CHAIN (args1);
- args2 = TREE_CHAIN (args2);
- }
-}
-
-/* Return 1 if PARMS specifies a fixed number of parameters
- and none of their types is affected by default promotions. */
-
-int
-self_promoting_args_p (parms)
- tree parms;
-{
- register tree t;
- for (t = parms; t; t = TREE_CHAIN (t))
- {
- register tree type = TREE_VALUE (t);
-
- if (TREE_CHAIN (t) == 0 && type != void_type_node)
- return 0;
-
- if (type == 0)
- return 0;
-
- if (TYPE_MAIN_VARIANT (type) == float_type_node)
- return 0;
-
- if (C_PROMOTING_INTEGER_TYPE_P (type))
- return 0;
- }
- return 1;
-}
-
-/* Return 1 if TYPE is not affected by default promotions. */
-
-static int
-self_promoting_type_p (type)
- tree type;
-{
- if (TYPE_MAIN_VARIANT (type) == float_type_node)
- return 0;
-
- if (C_PROMOTING_INTEGER_TYPE_P (type))
- return 0;
-
- return 1;
-}
-
-/* Return an unsigned type the same as TYPE in other respects. */
-
-tree
-unsigned_type (type)
- tree type;
-{
- tree type1 = TYPE_MAIN_VARIANT (type);
- if (type1 == signed_char_type_node || type1 == char_type_node)
- return unsigned_char_type_node;
- if (type1 == integer_type_node)
- return unsigned_type_node;
- if (type1 == short_integer_type_node)
- return short_unsigned_type_node;
- if (type1 == long_integer_type_node)
- return long_unsigned_type_node;
- if (type1 == long_long_integer_type_node)
- return long_long_unsigned_type_node;
- return type;
-}
-
-/* Return a signed type the same as TYPE in other respects. */
-
-tree
-signed_type (type)
- tree type;
-{
- tree type1 = TYPE_MAIN_VARIANT (type);
- if (type1 == unsigned_char_type_node || type1 == char_type_node)
- return signed_char_type_node;
- if (type1 == unsigned_type_node)
- return integer_type_node;
- if (type1 == short_unsigned_type_node)
- return short_integer_type_node;
- if (type1 == long_unsigned_type_node)
- return long_integer_type_node;
- if (type1 == long_long_unsigned_type_node)
- return long_long_integer_type_node;
- return type;
-}
-
-/* Return a type the same as TYPE except unsigned or
- signed according to UNSIGNEDP. */
-
-tree
-signed_or_unsigned_type (unsignedp, type)
- int unsignedp;
- tree type;
-{
- if (TREE_CODE (type) != INTEGER_TYPE)
- return type;
- if (TYPE_PRECISION (type) == TYPE_PRECISION (signed_char_type_node))
- return unsignedp ? unsigned_char_type_node : signed_char_type_node;
- if (TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node))
- return unsignedp ? unsigned_type_node : integer_type_node;
- if (TYPE_PRECISION (type) == TYPE_PRECISION (short_integer_type_node))
- return unsignedp ? short_unsigned_type_node : short_integer_type_node;
- if (TYPE_PRECISION (type) == TYPE_PRECISION (long_integer_type_node))
- return unsignedp ? long_unsigned_type_node : long_integer_type_node;
- if (TYPE_PRECISION (type) == TYPE_PRECISION (long_long_integer_type_node))
- return (unsignedp ? long_long_unsigned_type_node
- : long_long_integer_type_node);
- return type;
-}
-
-/* Compute the value of the `sizeof' operator. */
-
-tree
-c_sizeof (type)
- tree type;
-{
- enum tree_code code = TREE_CODE (type);
- tree t;
-
- if (code == FUNCTION_TYPE)
- {
- if (pedantic || warn_pointer_arith)
- pedwarn ("sizeof applied to a function type");
- return size_int (1);
- }
- if (code == VOID_TYPE)
- {
- if (pedantic || warn_pointer_arith)
- pedwarn ("sizeof applied to a void type");
- return size_int (1);
- }
- if (code == ERROR_MARK)
- return size_int (1);
- if (TYPE_SIZE (type) == 0)
- {
- error ("sizeof applied to an incomplete type");
- return size_int (0);
- }
-
- /* Convert in case a char is more than one unit. */
- t = size_binop (CEIL_DIV_EXPR, TYPE_SIZE (type),
- size_int (TYPE_PRECISION (char_type_node)));
- /* size_binop does not put the constant in range, so do it now. */
- if (TREE_CODE (t) == INTEGER_CST)
- TREE_CONSTANT_OVERFLOW (t) |= force_fit_type (t, 0);
- return t;
-}
-
-tree
-c_sizeof_nowarn (type)
- tree type;
-{
- enum tree_code code = TREE_CODE (type);
- tree t;
-
- if (code == FUNCTION_TYPE
- || code == VOID_TYPE
- || code == ERROR_MARK)
- return size_int (1);
- if (TYPE_SIZE (type) == 0)
- return size_int (0);
-
- /* Convert in case a char is more than one unit. */
- t = size_binop (CEIL_DIV_EXPR, TYPE_SIZE (type),
- size_int (TYPE_PRECISION (char_type_node)));
- force_fit_type (t, 0);
- return t;
-}
-
-/* Compute the size to increment a pointer by. */
-
-tree
-c_size_in_bytes (type)
- tree type;
-{
- enum tree_code code = TREE_CODE (type);
- tree t;
-
- if (code == FUNCTION_TYPE)
- return size_int (1);
- if (code == VOID_TYPE)
- return size_int (1);
- if (code == ERROR_MARK)
- return size_int (1);
- if (TYPE_SIZE (type) == 0)
- {
- error ("arithmetic on pointer to an incomplete type");
- return size_int (1);
- }
-
- /* Convert in case a char is more than one unit. */
- t = size_binop (CEIL_DIV_EXPR, TYPE_SIZE (type),
- size_int (BITS_PER_UNIT));
- force_fit_type (t, 0);
- return t;
-}
-
-/* Implement the __alignof keyword: Return the minimum required
- alignment of TYPE, measured in bytes. */
-
-tree
-c_alignof (type)
- tree type;
-{
- enum tree_code code = TREE_CODE (type);
-
- if (code == FUNCTION_TYPE)
- return size_int (FUNCTION_BOUNDARY / BITS_PER_UNIT);
-
- if (code == VOID_TYPE || code == ERROR_MARK)
- return size_int (1);
-
- return size_int (TYPE_ALIGN (type) / BITS_PER_UNIT);
-}
-
-/* Implement the __alignof keyword: Return the minimum required
- alignment of EXPR, measured in bytes. For VAR_DECL's and
- FIELD_DECL's return DECL_ALIGN (which can be set from an
- "aligned" __attribute__ specification). */
-
-tree
-c_alignof_expr (expr)
- tree expr;
-{
- if (TREE_CODE (expr) == VAR_DECL)
- return size_int (DECL_ALIGN (expr) / BITS_PER_UNIT);
-
- if (TREE_CODE (expr) == COMPONENT_REF
- && DECL_BIT_FIELD (TREE_OPERAND (expr, 1)))
- {
- error ("`__alignof' applied to a bit-field");
- return size_int (1);
- }
- else if (TREE_CODE (expr) == COMPONENT_REF
- && TREE_CODE (TREE_OPERAND (expr, 1)) == FIELD_DECL)
- return size_int (DECL_ALIGN (TREE_OPERAND (expr, 1)) / BITS_PER_UNIT);
-
- if (TREE_CODE (expr) == INDIRECT_REF)
- {
- tree t = TREE_OPERAND (expr, 0);
- tree best = t;
- int bestalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t)));
-
- while (TREE_CODE (t) == NOP_EXPR
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) == POINTER_TYPE)
- {
- int thisalign;
-
- t = TREE_OPERAND (t, 0);
- thisalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t)));
- if (thisalign > bestalign)
- best = t, bestalign = thisalign;
- }
- return c_alignof (TREE_TYPE (TREE_TYPE (best)));
- }
- else
- return c_alignof (TREE_TYPE (expr));
-}
-/* Return either DECL or its known constant value (if it has one). */
-
-static tree
-decl_constant_value (decl)
- tree decl;
-{
- if (! TREE_PUBLIC (decl)
- /* Don't change a variable array bound or initial value to a constant
- in a place where a variable is invalid. */
- && current_function_decl != 0
- && ! pedantic
- && ! TREE_THIS_VOLATILE (decl)
- && DECL_INITIAL (decl) != 0
- && TREE_CODE (DECL_INITIAL (decl)) != ERROR_MARK
- /* This is invalid if initial value is not constant.
- If it has either a function call, a memory reference,
- or a variable, then re-evaluating it could give different results. */
- && TREE_CONSTANT (DECL_INITIAL (decl))
- /* Check for cases where this is sub-optimal, even though valid. */
- && TREE_CODE (DECL_INITIAL (decl)) != CONSTRUCTOR
- && DECL_MODE (decl) != BLKmode)
- return DECL_INITIAL (decl);
- return decl;
-}
-
-/* Perform default promotions for C data used in expressions.
- Arrays and functions are converted to pointers;
- enumeral types or short or char, to int.
- In addition, manifest constants symbols are replaced by their values. */
-
-tree
-default_conversion (exp)
- tree exp;
-{
- register tree type = TREE_TYPE (exp);
- register enum tree_code code = TREE_CODE (type);
-
- /* Constants can be used directly unless they're not loadable. */
- if (TREE_CODE (exp) == CONST_DECL)
- exp = DECL_INITIAL (exp);
- /* Replace a nonvolatile const static variable with its value. */
- else if (optimize
- && TREE_CODE (exp) == VAR_DECL
- && TREE_READONLY (exp)
- /* But not for iterators! */
- && !ITERATOR_P (exp)
- && DECL_MODE (exp) != BLKmode)
- {
- exp = decl_constant_value (exp);
- type = TREE_TYPE (exp);
- }
-
- /* Strip NON_LVALUE_EXPRs and no-op conversions, since we aren't using as
- an lvalue. */
- /* Do not use STRIP_NOPS here! It will remove conversions from pointer
- to integer and cause infinite recursion. */
- while (TREE_CODE (exp) == NON_LVALUE_EXPR
- || (TREE_CODE (exp) == NOP_EXPR
- && TREE_TYPE (TREE_OPERAND (exp, 0)) == TREE_TYPE (exp)))
- exp = TREE_OPERAND (exp, 0);
-
- /* Normally convert enums to int,
- but convert wide enums to something wider. */
- if (code == ENUMERAL_TYPE)
- {
- type = type_for_size (MAX (TYPE_PRECISION (type),
- TYPE_PRECISION (integer_type_node)),
- (flag_traditional && TREE_UNSIGNED (type)));
- return convert (type, exp);
- }
-
- if (C_PROMOTING_INTEGER_TYPE_P (type))
- {
- /* Traditionally, unsignedness is preserved in default promotions.
- Also preserve unsignedness if not really getting any wider. */
- if (TREE_UNSIGNED (type)
- && (flag_traditional
- || TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node)))
- return convert (unsigned_type_node, exp);
- return convert (integer_type_node, exp);
- }
- if (flag_traditional && TYPE_MAIN_VARIANT (type) == float_type_node)
- return convert (double_type_node, exp);
- if (code == VOID_TYPE)
- {
- error ("void value not ignored as it ought to be");
- return error_mark_node;
- }
- if (code == FUNCTION_TYPE)
- {
- return build_unary_op (ADDR_EXPR, exp, 0);
- }
- if (code == ARRAY_TYPE)
- {
- register tree adr;
- tree restype = TREE_TYPE (type);
- tree ptrtype;
-
- if (TREE_CODE (exp) == INDIRECT_REF)
- return convert (TYPE_POINTER_TO (restype),
- TREE_OPERAND (exp, 0));
-
- if (TREE_CODE (exp) == COMPOUND_EXPR)
- {
- tree op1 = default_conversion (TREE_OPERAND (exp, 1));
- return build (COMPOUND_EXPR, TREE_TYPE (op1),
- TREE_OPERAND (exp, 0), op1);
- }
-
- if (!lvalue_p (exp)
- && ! (TREE_CODE (exp) == CONSTRUCTOR && TREE_STATIC (exp)))
- {
- error ("invalid use of non-lvalue array");
- return error_mark_node;
- }
-
- if (TYPE_READONLY (type) || TYPE_VOLATILE (type))
- restype = c_build_type_variant (restype, TYPE_READONLY (type),
- TYPE_VOLATILE (type));
-
- ptrtype = build_pointer_type (restype);
-
- if (TREE_CODE (exp) == VAR_DECL)
- {
- /* ??? This is not really quite correct
- in that the type of the operand of ADDR_EXPR
- is not the target type of the type of the ADDR_EXPR itself.
- Question is, can this lossage be avoided? */
- adr = build1 (ADDR_EXPR, ptrtype, exp);
- if (mark_addressable (exp) == 0)
- return error_mark_node;
- TREE_CONSTANT (adr) = staticp (exp);
- TREE_SIDE_EFFECTS (adr) = 0; /* Default would be, same as EXP. */
- return adr;
- }
- /* This way is better for a COMPONENT_REF since it can
- simplify the offset for a component. */
- adr = build_unary_op (ADDR_EXPR, exp, 1);
- return convert (ptrtype, adr);
- }
- return exp;
-}
-
-/* Make an expression to refer to the COMPONENT field of
- structure or union value DATUM. COMPONENT is an IDENTIFIER_NODE. */
-
-tree
-build_component_ref (datum, component)
- tree datum, component;
-{
- register tree type = TREE_TYPE (datum);
- register enum tree_code code = TREE_CODE (type);
- register tree field = NULL;
- register tree ref;
-
- /* If DATUM is a COMPOUND_EXPR or COND_EXPR, move our reference inside it
- unless we are not to support things not strictly ANSI. */
- switch (TREE_CODE (datum))
- {
- case COMPOUND_EXPR:
- {
- tree value = build_component_ref (TREE_OPERAND (datum, 1), component);
- return build (COMPOUND_EXPR, TREE_TYPE (value),
- TREE_OPERAND (datum, 0), value);
- }
- case COND_EXPR:
- return build_conditional_expr
- (TREE_OPERAND (datum, 0),
- build_component_ref (TREE_OPERAND (datum, 1), component),
- build_component_ref (TREE_OPERAND (datum, 2), component));
- }
-
- /* See if there is a field or component with name COMPONENT. */
-
- if (code == RECORD_TYPE || code == UNION_TYPE)
- {
- if (TYPE_SIZE (type) == 0)
- {
- incomplete_type_error (NULL_TREE, type);
- return error_mark_node;
- }
-
- /* Look up component name in the structure type definition.
-
- If TYPE_LANG_SPECIFIC is set, then it is a sorted array of pointers
- to the field elements. Use a binary search on this array to quickly
- find the element. Otherwise, do a linear search. TYPE_LANG_SPECIFIC
- will always be set for structures which have many elements. */
-
- if (TYPE_LANG_SPECIFIC (type))
- {
- int bot, top, half;
- tree *field_array = &TYPE_LANG_SPECIFIC (type)->elts[0];
-
- field = TYPE_FIELDS (type);
- bot = 0;
- top = TYPE_LANG_SPECIFIC (type)->len;
- while (top - bot > 1)
- {
- int cmp;
-
- half = (top - bot + 1) >> 1;
- field = field_array[bot+half];
- cmp = (long)DECL_NAME (field) - (long)component;
- if (cmp == 0)
- break;
- if (cmp < 0)
- bot += half;
- else
- top = bot + half;
- }
-
- if (DECL_NAME (field_array[bot]) == component)
- field = field_array[bot];
- else if (DECL_NAME (field) != component)
- field = 0;
- }
- else
- {
- for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
- {
- if (DECL_NAME (field) == component)
- break;
- }
- }
-
- if (!field)
- {
- error (code == RECORD_TYPE
- ? "structure has no member named `%s'"
- : "union has no member named `%s'",
- IDENTIFIER_POINTER (component));
- return error_mark_node;
- }
- if (TREE_TYPE (field) == error_mark_node)
- return error_mark_node;
-
- ref = build (COMPONENT_REF, TREE_TYPE (field), datum, field);
-
- if (TREE_READONLY (datum) || TREE_READONLY (field))
- TREE_READONLY (ref) = 1;
- if (TREE_THIS_VOLATILE (datum) || TREE_THIS_VOLATILE (field))
- TREE_THIS_VOLATILE (ref) = 1;
-
- return ref;
- }
- else if (code != ERROR_MARK)
- error ("request for member `%s' in something not a structure or union",
- IDENTIFIER_POINTER (component));
-
- return error_mark_node;
-}
-
-/* Given an expression PTR for a pointer, return an expression
- for the value pointed to.
- ERRORSTRING is the name of the operator to appear in error messages. */
-
-tree
-build_indirect_ref (ptr, errorstring)
- tree ptr;
- char *errorstring;
-{
- register tree pointer = default_conversion (ptr);
- register tree type = TREE_TYPE (pointer);
-
- if (TREE_CODE (type) == POINTER_TYPE)
- {
- if (TREE_CODE (pointer) == ADDR_EXPR
- && !flag_volatile
- && (TREE_TYPE (TREE_OPERAND (pointer, 0))
- == TREE_TYPE (type)))
- return TREE_OPERAND (pointer, 0);
- else
- {
- tree t = TREE_TYPE (type);
- register tree ref = build1 (INDIRECT_REF,
- TYPE_MAIN_VARIANT (t), pointer);
-
- if (TYPE_SIZE (t) == 0 && TREE_CODE (t) != ARRAY_TYPE)
- {
- error ("dereferencing pointer to incomplete type");
- return error_mark_node;
- }
- if (TREE_CODE (t) == VOID_TYPE)
- warning ("dereferencing `void *' pointer");
-
- /* We *must* set TREE_READONLY when dereferencing a pointer to const,
- so that we get the proper error message if the result is used
- to assign to. Also, &* is supposed to be a no-op.
- And ANSI C seems to specify that the type of the result
- should be the const type. */
- /* A de-reference of a pointer to const is not a const. It is valid
- to change it via some other pointer. */
- TREE_READONLY (ref) = TYPE_READONLY (t);
- TREE_SIDE_EFFECTS (ref)
- = TYPE_VOLATILE (t) || TREE_SIDE_EFFECTS (pointer) || flag_volatile;
- TREE_THIS_VOLATILE (ref) = TYPE_VOLATILE (t) || flag_volatile;
- return ref;
- }
- }
- else if (TREE_CODE (pointer) != ERROR_MARK)
- error ("invalid type argument of `%s'", errorstring);
- return error_mark_node;
-}
-
-/* This handles expressions of the form "a[i]", which denotes
- an array reference.
-
- This is logically equivalent in C to *(a+i), but we may do it differently.
- If A is a variable or a member, we generate a primitive ARRAY_REF.
- This avoids forcing the array out of registers, and can work on
- arrays that are not lvalues (for example, members of structures returned
- by functions). */
-
-tree
-build_array_ref (array, index)
- tree array, index;
-{
- if (index == 0)
- {
- error ("subscript missing in array reference");
- return error_mark_node;
- }
-
- if (TREE_TYPE (array) == error_mark_node
- || TREE_TYPE (index) == error_mark_node)
- return error_mark_node;
-
- if (TREE_CODE (TREE_TYPE (array)) == ARRAY_TYPE
- && TREE_CODE (array) != INDIRECT_REF)
- {
- tree rval, type;
-
- /* Subscripting with type char is likely to lose
- on a machine where chars are signed.
- So warn on any machine, but optionally.
- Don't warn for unsigned char since that type is safe.
- Don't warn for signed char because anyone who uses that
- must have done so deliberately. */
- if (warn_char_subscripts
- && TYPE_MAIN_VARIANT (TREE_TYPE (index)) == char_type_node)
- warning ("array subscript has type `char'");
-
- /* Apply default promotions *after* noticing character types. */
- index = default_conversion (index);
-
- /* Require integer *after* promotion, for sake of enums. */
- if (TREE_CODE (TREE_TYPE (index)) != INTEGER_TYPE)
- {
- error ("array subscript is not an integer");
- return error_mark_node;
- }
-
- /* An array that is indexed by a non-constant
- cannot be stored in a register; we must be able to do
- address arithmetic on its address.
- Likewise an array of elements of variable size. */
- if (TREE_CODE (index) != INTEGER_CST
- || (TYPE_SIZE (TREE_TYPE (TREE_TYPE (array))) != 0
- && TREE_CODE (TYPE_SIZE (TREE_TYPE (TREE_TYPE (array)))) != INTEGER_CST))
- {
- if (mark_addressable (array) == 0)
- return error_mark_node;
- }
-
- if (pedantic && !lvalue_p (array))
- {
- if (DECL_REGISTER (array))
- pedwarn ("ANSI C forbids subscripting `register' array");
- else
- pedwarn ("ANSI C forbids subscripting non-lvalue array");
- }
-
- if (pedantic)
- {
- tree foo = array;
- while (TREE_CODE (foo) == COMPONENT_REF)
- foo = TREE_OPERAND (foo, 0);
- if (TREE_CODE (foo) == VAR_DECL && DECL_REGISTER (foo))
- pedwarn ("ANSI C forbids subscripting non-lvalue array");
- }
-
- type = TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (array)));
- rval = build (ARRAY_REF, type, array, index);
- /* Array ref is const/volatile if the array elements are
- or if the array is. */
- TREE_READONLY (rval)
- |= (TYPE_READONLY (TREE_TYPE (TREE_TYPE (array)))
- | TREE_READONLY (array));
- TREE_SIDE_EFFECTS (rval)
- |= (TYPE_VOLATILE (TREE_TYPE (TREE_TYPE (array)))
- | TREE_SIDE_EFFECTS (array));
- TREE_THIS_VOLATILE (rval)
- |= (TYPE_VOLATILE (TREE_TYPE (TREE_TYPE (array)))
- /* This was added by rms on 16 Nov 91.
- It fixes vol struct foo *a; a->elts[1]
- in an inline function.
- Hope it doesn't break something else. */
- | TREE_THIS_VOLATILE (array));
- return require_complete_type (fold (rval));
- }
-
- {
- tree ar = default_conversion (array);
- tree ind = default_conversion (index);
-
- /* Put the integer in IND to simplify error checking. */
- if (TREE_CODE (TREE_TYPE (ar)) == INTEGER_TYPE)
- {
- tree temp = ar;
- ar = ind;
- ind = temp;
- }
-
- if (ar == error_mark_node)
- return ar;
-
- if (TREE_CODE (TREE_TYPE (ar)) != POINTER_TYPE)
- {
- error ("subscripted value is neither array nor pointer");
- return error_mark_node;
- }
- if (TREE_CODE (TREE_TYPE (ind)) != INTEGER_TYPE)
- {
- error ("array subscript is not an integer");
- return error_mark_node;
- }
-
- return build_indirect_ref (build_binary_op (PLUS_EXPR, ar, ind, 0),
- "array indexing");
- }
-}
-
-/* Check a printf/fprintf/sprintf/scanf/fscanf/sscanf format against PARAMS. */
-
-#define ISDIGIT(c) ((c) >= '0' && (c) <= '9')
-
-#define T_I &integer_type_node
-#define T_L &long_integer_type_node
-#define T_S &short_integer_type_node
-#define T_UI &unsigned_type_node
-#define T_UL &long_unsigned_type_node
-#define T_US &short_unsigned_type_node
-#define T_F &float_type_node
-#define T_D &double_type_node
-#define T_LD &long_double_type_node
-#define T_C &char_type_node
-#define T_V &void_type_node
-#define T_W &wchar_type_node
-
-typedef struct
-{
- char *format_chars;
- int pointer_count;
- /* Type of argument if no length modifier is used. */
- tree *nolen;
- /* Type of argument if length modifier for shortening is used.
- If NULL, then this modifier is not allowed. */
- tree *hlen;
- /* Type of argument if length modifier `l' is used.
- If NULL, then this modifier is not allowed. */
- tree *llen;
- /* Type of argument if length modifier `L' is used.
- If NULL, then this modifier is not allowed. */
- tree *bigllen;
- /* List of other modifier characters allowed with these options. */
- char *flag_chars;
-} format_char_info;
-
-static format_char_info print_table[]
- = {
- { "di", 0, T_I, T_I, T_L, NULL, "-wp0 +" },
- { "oxX", 0, T_UI, T_UI, T_UL, NULL, "-wp0#" },
- { "u", 0, T_UI, T_UI, T_UL, NULL, "-wp0" },
- { "feEgG", 0, T_D, NULL, NULL, T_LD, "-wp0 +#" },
- { "c", 0, T_I, NULL, T_W, NULL, "-w" },
- { "C", 0, T_W, NULL, NULL, NULL, "-w" },
- { "s", 1, T_C, NULL, T_W, NULL, "-wp" },
- { "S", 1, T_W, NULL, NULL, NULL, "-wp" },
- { "p", 1, T_V, NULL, NULL, NULL, "-" },
- { "n", 1, T_I, T_S, T_L, NULL, "" },
- { NULL }
- };
-
-static format_char_info scan_table[]
- = {
- { "di", 1, T_I, T_S, T_L, NULL, "*" },
- { "ouxX", 1, T_UI, T_US, T_UL, NULL, "*" },
- { "efgEG", 1, T_F, NULL, T_D, T_LD, "*" },
- { "sc", 1, T_C, NULL, T_W, NULL, "*" },
- { "[", 1, T_C, NULL, NULL, NULL, "*" },
- { "C", 1, T_W, NULL, NULL, NULL, "*" },
- { "S", 1, T_W, NULL, NULL, NULL, "*" },
- { "p", 2, T_V, NULL, NULL, NULL, "*" },
- { "n", 1, T_I, T_S, T_L, NULL, "" },
- { NULL }
- };
-
-typedef struct
-{
- tree function_ident; /* identifier such as "printf" */
- int is_scan; /* TRUE if *scanf */
- int format_num; /* number of format argument */
- int first_arg_num; /* number of first arg (zero for varargs) */
-} function_info;
-
-static unsigned int function_info_entries = 0;
-static function_info *function_info_table = NULL;
-
-/* Record information for argument format checking. FUNCTION_IDENT is
- the identifier node for the name of the function to check (its decl
- need not exist yet). IS_SCAN is true for scanf-type format checking;
- false indicates printf-style format checking. FORMAT_NUM is the number
- of the argument which is the format control string (starting from 1).
- FIRST_ARG_NUM is the number of the first actual argument to check
- against teh format string, or zero if no checking is not be done
- (e.g. for varargs such as vfprintf). */
-
-void
-record_format_info (function_ident, is_scan, format_num, first_arg_num)
- tree function_ident;
- int is_scan;
- int format_num;
- int first_arg_num;
-{
- function_info *info;
-
- function_info_entries++;
- if (function_info_table)
- function_info_table
- = (function_info *) xrealloc (function_info_table,
- function_info_entries * sizeof (function_info));
- else
- function_info_table = (function_info *) xmalloc (sizeof (function_info));
-
- info = &function_info_table[function_info_entries - 1];
-
- info->function_ident = function_ident;
- info->is_scan = is_scan;
- info->format_num = format_num;
- info->first_arg_num = first_arg_num;
-}
-
-/* Initialize the table of functions to perform format checking on.
- The ANSI functions are always checked (whether <stdio.h> is
- included or not), since it is common to call printf without
- including <stdio.h>. There shouldn't be a problem with this,
- since ANSI reserves these function names whether you include the
- header file or not. In any case, the checking is harmless. */
-
-void
-init_format_info_table ()
-{
- record_format_info (get_identifier ("printf"), 0, 1, 2);
- record_format_info (get_identifier ("fprintf"), 0, 2, 3);
- record_format_info (get_identifier ("sprintf"), 0, 2, 3);
- record_format_info (get_identifier ("scanf"), 1, 1, 2);
- record_format_info (get_identifier ("fscanf"), 1, 2, 3);
- record_format_info (get_identifier ("sscanf"), 1, 2, 3);
- record_format_info (get_identifier ("vprintf"), 0, 1, 0);
- record_format_info (get_identifier ("vfprintf"), 0, 2, 0);
- record_format_info (get_identifier ("vsprintf"), 0, 2, 0);
-}
-
-static char tfaff[] = "too few arguments for format";
-
-/* Check the argument list of a call to printf, scanf, etc.
- INFO points to the element of function_info_table.
- PARAMS is the list of argument values. */
-
-static void
-check_format (info, params)
- function_info *info;
- tree params;
-{
- int i;
- int arg_num;
- int suppressed, wide, precise;
- int length_char;
- int format_char;
- int format_length;
- tree format_tree;
- tree cur_param;
- tree cur_type;
- tree wanted_type;
- char *format_chars;
- format_char_info *fci;
- static char message[132];
- char flag_chars[8];
-
- /* Skip to format argument. If the argument isn't available, there's
- no work for us to do; prototype checking will catch the problem. */
- for (arg_num = 1; ; ++arg_num)
- {
- if (params == 0)
- return;
- if (arg_num == info->format_num)
- break;
- params = TREE_CHAIN (params);
- }
- format_tree = TREE_VALUE (params);
- params = TREE_CHAIN (params);
- if (format_tree == 0)
- return;
- /* We can only check the format if it's a string constant. */
- while (TREE_CODE (format_tree) == NOP_EXPR)
- format_tree = TREE_OPERAND (format_tree, 0); /* strip coercion */
- if (format_tree == null_pointer_node)
- {
- warning ("null format string");
- return;
- }
- if (TREE_CODE (format_tree) != ADDR_EXPR)
- return;
- format_tree = TREE_OPERAND (format_tree, 0);
- if (TREE_CODE (format_tree) != STRING_CST)
- return;
- format_chars = TREE_STRING_POINTER (format_tree);
- format_length = TREE_STRING_LENGTH (format_tree);
- if (format_length <= 1)
- warning ("zero-length format string");
- if (format_chars[--format_length] != 0)
- {
- warning ("unterminated format string");
- return;
- }
- /* Skip to first argument to check. */
- while (arg_num + 1 < info->first_arg_num)
- {
- if (params == 0)
- return;
- params = TREE_CHAIN (params);
- ++arg_num;
- }
- while (1)
- {
- if (*format_chars == 0)
- {
- if (format_chars - TREE_STRING_POINTER (format_tree) != format_length)
- warning ("embedded `\\0' in format");
- if (info->first_arg_num != 0 && params != 0)
- warning ("too many arguments for format");
- return;
- }
- if (*format_chars++ != '%')
- continue;
- if (*format_chars == 0)
- {
- warning ("spurious trailing `%%' in format");
- continue;
- }
- if (*format_chars == '%')
- {
- ++format_chars;
- continue;
- }
- flag_chars[0] = 0;
- suppressed = wide = precise = FALSE;
- if (info->is_scan)
- {
- suppressed = *format_chars == '*';
- if (suppressed)
- ++format_chars;
- while (ISDIGIT (*format_chars))
- ++format_chars;
- }
- else
- {
- while (*format_chars != 0 && index (" +#0-", *format_chars) != 0)
- {
- if (index (flag_chars, *format_chars) != 0)
- {
- sprintf (message, "repeated `%c' flag in format",
- *format_chars);
- warning (message);
- }
- i = strlen (flag_chars);
- flag_chars[i++] = *format_chars++;
- flag_chars[i] = 0;
- }
- /* "If the space and + flags both appear,
- the space flag will be ignored." */
- if (index (flag_chars, ' ') != 0
- && index (flag_chars, '+') != 0)
- warning ("use of both ` ' and `+' flags in format");
- /* "If the 0 and - flags both appear,
- the 0 flag will be ignored." */
- if (index (flag_chars, '0') != 0
- && index (flag_chars, '-') != 0)
- warning ("use of both `0' and `-' flags in format");
- if (*format_chars == '*')
- {
- wide = TRUE;
- /* "...a field width...may be indicated by an asterisk.
- In this case, an int argument supplies the field width..." */
- ++format_chars;
- if (params == 0)
- {
- warning (tfaff);
- return;
- }
- if (info->first_arg_num != 0)
- {
- cur_param = TREE_VALUE (params);
- params = TREE_CHAIN (params);
- ++arg_num;
- /* size_t is generally not valid here.
- It will work on most machines, because size_t and int
- have the same mode. But might as well warn anyway,
- since it will fail on other machines. */
- if (TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
- != integer_type_node)
- {
- sprintf (message,
- "field width is not type int (arg %d)",
- arg_num);
- warning (message);
- }
- }
- }
- else
- {
- while (ISDIGIT (*format_chars))
- {
- wide = TRUE;
- ++format_chars;
- }
- }
- if (*format_chars == '.')
- {
- precise = TRUE;
- ++format_chars;
- if (*format_chars != '*' && !ISDIGIT (*format_chars))
- warning ("`.' not followed by `*' or digit in format");
- /* "...a...precision...may be indicated by an asterisk.
- In this case, an int argument supplies the...precision." */
- if (*format_chars == '*')
- {
- if (info->first_arg_num != 0)
- {
- ++format_chars;
- if (params == 0)
- {
- warning (tfaff);
- return;
- }
- cur_param = TREE_VALUE (params);
- params = TREE_CHAIN (params);
- ++arg_num;
- if (TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
- != integer_type_node)
- {
- sprintf (message,
- "field width is not type int (arg %d)",
- arg_num);
- warning (message);
- }
- }
- }
- else
- {
- while (ISDIGIT (*format_chars))
- ++format_chars;
- }
- }
- }
- if (*format_chars == 'h' || *format_chars == 'l' || *format_chars == 'L')
- length_char = *format_chars++;
- else
- length_char = 0;
- if (suppressed && length_char != 0)
- {
- sprintf (message,
- "use of `*' and `%c' together in format",
- length_char);
- warning (message);
- }
- format_char = *format_chars;
- if (format_char == 0)
- {
- warning ("conversion lacks type at end of format");
- continue;
- }
- format_chars++;
- fci = info->is_scan ? scan_table : print_table;
- while (1)
- {
- if (fci->format_chars == 0
- || index (fci->format_chars, format_char) != 0)
- break;
- ++fci;
- }
- if (fci->format_chars == 0)
- {
- if (format_char >= 040 && format_char < 0177)
- sprintf (message,
- "unknown conversion type character `%c' in format",
- format_char);
- else
- sprintf (message,
- "unknown conversion type character 0x%x in format",
- format_char);
- warning (message);
- continue;
- }
- if (wide && index (fci->flag_chars, 'w') == 0)
- {
- sprintf (message, "width used with `%c' format",
- format_char);
- warning (message);
- }
- if (precise && index (fci->flag_chars, 'p') == 0)
- {
- sprintf (message, "precision used with `%c' format",
- format_char);
- warning (message);
- }
- if (suppressed)
- {
- if (index (fci->flag_chars, '*') == 0)
- {
- sprintf (message,
- "suppression of `%c' conversion in format",
- format_char);
- warning (message);
- }
- continue;
- }
- for (i = 0; flag_chars[i] != 0; ++i)
- {
- if (index (fci->flag_chars, flag_chars[i]) == 0)
- {
- sprintf (message, "flag `%c' used with type `%c'",
- flag_chars[i], format_char);
- warning (message);
- }
- }
- if (precise && index (flag_chars, '0') != 0
- && (format_char == 'd' || format_char == 'i'
- || format_char == 'o' || format_char == 'u'
- || format_char == 'x' || format_char == 'x'))
- {
- sprintf (message,
- "precision and `0' flag not both allowed with `%c' format",
- format_char);
- warning (message);
- }
- switch (length_char)
- {
- default: wanted_type = fci->nolen ? *(fci->nolen) : 0; break;
- case 'h': wanted_type = fci->hlen ? *(fci->hlen) : 0; break;
- case 'l': wanted_type = fci->llen ? *(fci->llen) : 0; break;
- case 'L': wanted_type = fci->bigllen ? *(fci->bigllen) : 0; break;
- }
- if (wanted_type == 0)
- {
- sprintf (message,
- "use of `%c' length character with `%c' type character",
- length_char, format_char);
- warning (message);
- }
-
- /*
- ** XXX -- should kvetch about stuff such as
- ** {
- ** const int i;
- **
- ** scanf ("%d", &i);
- ** }
- */
-
- /* Finally. . .check type of argument against desired type! */
- if (info->first_arg_num == 0)
- continue;
- if (params == 0)
- {
- warning (tfaff);
- return;
- }
- cur_param = TREE_VALUE (params);
- params = TREE_CHAIN (params);
- ++arg_num;
- cur_type = TREE_TYPE (cur_param);
-
- /* Check the types of any additional pointer arguments
- that precede the "real" argument. */
- for (i = 0; i < fci->pointer_count; ++i)
- {
- if (TREE_CODE (cur_type) == POINTER_TYPE)
- {
- cur_type = TREE_TYPE (cur_type);
- continue;
- }
- sprintf (message,
- "format argument is not a %s (arg %d)",
- ((fci->pointer_count == 1) ? "pointer" : "pointer to a pointer"),
- arg_num);
- warning (message);
- break;
- }
-
- /* Check the type of the "real" argument, if there's a type we want. */
- if (i == fci->pointer_count && wanted_type != 0
- && wanted_type != TYPE_MAIN_VARIANT (cur_type)
- /* If we want `void *', allow any pointer type.
- (Anything else would already have got a warning.) */
- && ! (wanted_type == void_type_node
- && fci->pointer_count > 0)
- /* Don't warn about differences merely in signedness. */
- && !(TREE_CODE (wanted_type) == INTEGER_TYPE
- && TREE_CODE (cur_type) == INTEGER_TYPE
- && TYPE_PRECISION (wanted_type) == TYPE_PRECISION (cur_type)))
- {
- register char *this;
- register char *that;
-
- this = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (wanted_type)));
- that = 0;
- if (TREE_CODE (cur_type) != ERROR_MARK
- && TYPE_NAME (cur_type) != 0
- && TREE_CODE (cur_type) != INTEGER_TYPE
- && !(TREE_CODE (cur_type) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (cur_type)) == INTEGER_TYPE))
- {
- if (TREE_CODE (TYPE_NAME (cur_type)) == TYPE_DECL
- && DECL_NAME (TYPE_NAME (cur_type)) != 0)
- that = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (cur_type)));
- else
- that = IDENTIFIER_POINTER (TYPE_NAME (cur_type));
- }
-
- /* A nameless type can't possibly match what the format wants.
- So there will be a warning for it.
- Make up a string to describe vaguely what it is. */
- if (that == 0)
- {
- if (TREE_CODE (cur_type) == POINTER_TYPE)
- that = "pointer";
- else
- that = "different type";
- }
-
- if (strcmp (this, that) != 0)
- {
- sprintf (message, "%s format, %s arg (arg %d)",
- this, that, arg_num);
- warning (message);
- }
- }
- }
-}
-
-/* Build a function call to function FUNCTION with parameters PARAMS.
- PARAMS is a list--a chain of TREE_LIST nodes--in which the
- TREE_VALUE of each node is a parameter-expression.
- FUNCTION's data type may be a function type or a pointer-to-function. */
-
-tree
-build_function_call (function, params)
- tree function, params;
-{
- register tree fntype, fundecl;
- register tree coerced_params;
- tree name = NULL_TREE;
-
- /* Strip NON_LVALUE_EXPRs, etc., since we aren't using as an lvalue. */
- STRIP_TYPE_NOPS (function);
-
- /* Convert anything with function type to a pointer-to-function. */
- if (TREE_CODE (function) == FUNCTION_DECL)
- {
- name = DECL_NAME (function);
- /* Differs from default_conversion by not setting TREE_ADDRESSABLE
- (because calling an inline function does not mean the function
- needs to be separately compiled). */
- fntype = build_type_variant (TREE_TYPE (function),
- TREE_READONLY (function),
- TREE_THIS_VOLATILE (function));
- fundecl = function;
- function = build1 (ADDR_EXPR, build_pointer_type (fntype), function);
- }
- else
- function = default_conversion (function);
-
- fntype = TREE_TYPE (function);
-
- if (TREE_CODE (fntype) == ERROR_MARK)
- return error_mark_node;
-
- if (!(TREE_CODE (fntype) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (fntype)) == FUNCTION_TYPE))
- {
- error ("called object is not a function");
- return error_mark_node;
- }
-
- /* fntype now gets the type of function pointed to. */
- fntype = TREE_TYPE (fntype);
-
- /* Convert the parameters to the types declared in the
- function prototype, or apply default promotions. */
-
- coerced_params
- = convert_arguments (TYPE_ARG_TYPES (fntype), params, name, fundecl);
-
- /* Check for errors in format strings. */
- if (warn_format && name != 0)
- {
- unsigned int i;
-
- /* See if this function is a format function. */
- for (i = 0; i < function_info_entries; i++)
- if (function_info_table[i].function_ident == name)
- {
- register char *message;
-
- /* If so, check it. */
- check_format (&function_info_table[i], coerced_params);
- break;
- }
- }
-
- /* Recognize certain built-in functions so we can make tree-codes
- other than CALL_EXPR. We do this when it enables fold-const.c
- to do something useful. */
-
- if (TREE_CODE (function) == ADDR_EXPR
- && TREE_CODE (TREE_OPERAND (function, 0)) == FUNCTION_DECL
- && DECL_BUILT_IN (TREE_OPERAND (function, 0)))
- switch (DECL_FUNCTION_CODE (TREE_OPERAND (function, 0)))
- {
- case BUILT_IN_ABS:
- case BUILT_IN_LABS:
- case BUILT_IN_FABS:
- if (coerced_params == 0)
- return integer_zero_node;
- return build_unary_op (ABS_EXPR, TREE_VALUE (coerced_params), 0);
- }
-
- {
- register tree result
- = build (CALL_EXPR, TREE_TYPE (fntype),
- function, coerced_params, NULL_TREE);
-
- TREE_SIDE_EFFECTS (result) = 1;
- if (TREE_TYPE (result) == void_type_node)
- return result;
- return require_complete_type (result);
- }
-}
-
-/* Convert the argument expressions in the list VALUES
- to the types in the list TYPELIST. The result is a list of converted
- argument expressions.
-
- If TYPELIST is exhausted, or when an element has NULL as its type,
- perform the default conversions.
-
- PARMLIST is the chain of parm decls for the function being called.
- It may be 0, if that info is not available.
- It is used only for generating error messages.
-
- NAME is an IDENTIFIER_NODE or 0. It is used only for error messages.
-
- This is also where warnings about wrong number of args are generated.
-
- Both VALUES and the returned value are chains of TREE_LIST nodes
- with the elements of the list in the TREE_VALUE slots of those nodes. */
-
-static tree
-convert_arguments (typelist, values, name, fundecl)
- tree typelist, values, name, fundecl;
-{
- register tree typetail, valtail;
- register tree result = NULL;
- int parmnum;
-
- /* Scan the given expressions and types, producing individual
- converted arguments and pushing them on RESULT in reverse order. */
-
- for (valtail = values, typetail = typelist, parmnum = 0;
- valtail;
- valtail = TREE_CHAIN (valtail), parmnum++)
- {
- register tree type = typetail ? TREE_VALUE (typetail) : 0;
- register tree val = TREE_VALUE (valtail);
-
- if (type == void_type_node)
- {
- if (name)
- error ("too many arguments to function `%s'",
- IDENTIFIER_POINTER (name));
- else
- error ("too many arguments to function");
- break;
- }
-
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- /* Do not use STRIP_NOPS here! We do not want an enumerator with value 0
- to convert automatically to a pointer. */
- if (TREE_CODE (val) == NON_LVALUE_EXPR)
- val = TREE_OPERAND (val, 0);
-
- if (TREE_CODE (TREE_TYPE (val)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE (val)) == FUNCTION_TYPE)
- val = default_conversion (val);
-
- val = require_complete_type (val);
-
- if (type != 0)
- {
- /* Formal parm type is specified by a function prototype. */
- tree parmval;
-
- if (TYPE_SIZE (type) == 0)
- {
- error ("type of formal parameter %d is incomplete", parmnum + 1);
- parmval = val;
- }
- else
- {
- tree parmname;
-#ifdef PROMOTE_PROTOTYPES
- /* Rather than truncating and then reextending,
- convert directly to int, if that's the type we will want. */
- if (! flag_traditional
- && TREE_CODE (type) == INTEGER_TYPE
- && (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)))
- type = integer_type_node;
-#endif
-
-#if 0 /* This turns out not to win--there's no way to write a prototype
- for a function whose arg type is a union with no tag. */
- /* Nameless union automatically casts the types it contains. */
- if (TREE_CODE (type) == UNION_TYPE && TYPE_NAME (type) == 0)
- {
- tree field;
-
- for (field = TYPE_FIELDS (type); field;
- field = TREE_CHAIN (field))
- if (comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)),
- TYPE_MAIN_VARIANT (TREE_TYPE (val))))
- break;
-
- if (field)
- val = build1 (CONVERT_EXPR, type, val);
- }
-#endif
-
- /* Optionally warn about conversions that
- differ from the default conversions. */
- if (warn_conversion)
- {
- int formal_prec = TYPE_PRECISION (type);
-
- if (TREE_CODE (type) != REAL_TYPE
- && TREE_CODE (TREE_TYPE (val)) == REAL_TYPE)
- warn_for_assignment ("%s as integer rather than floating due to prototype", (char *) 0, name, parmnum + 1);
- else if (TREE_CODE (type) == REAL_TYPE
- && TREE_CODE (TREE_TYPE (val)) != REAL_TYPE)
- warn_for_assignment ("%s as floating rather than integer due to prototype", (char *) 0, name, parmnum + 1);
- else if (TREE_CODE (type) == REAL_TYPE
- && TREE_CODE (TREE_TYPE (val)) == REAL_TYPE)
- {
- /* Warn if any argument is passed as `float',
- since without a prototype it would be `double'. */
- if (formal_prec == TYPE_PRECISION (float_type_node))
- warn_for_assignment ("%s as `float' rather than `double' due to prototype", (char *) 0, name, parmnum + 1);
- }
- /* Detect integer changing in width or signedness. */
- else if ((TREE_CODE (type) == INTEGER_TYPE
- || TREE_CODE (type) == ENUMERAL_TYPE)
- && (TREE_CODE (TREE_TYPE (val)) == INTEGER_TYPE
- || TREE_CODE (TREE_TYPE (val)) == ENUMERAL_TYPE))
- {
- tree would_have_been = default_conversion (val);
- tree type1 = TREE_TYPE (would_have_been);
-
- if (TREE_CODE (type) == ENUMERAL_TYPE
- && type == TREE_TYPE (val))
- /* No warning if function asks for enum
- and the actual arg is that enum type. */
- ;
- else if (formal_prec != TYPE_PRECISION (type1))
- warn_for_assignment ("%s with different width due to prototype", (char *) 0, name, parmnum + 1);
- else if (TREE_UNSIGNED (type) == TREE_UNSIGNED (type1))
- ;
- /* Don't complain if the formal parameter type
- is an enum, because we can't tell now whether
- the value was an enum--even the same enum. */
- else if (TREE_CODE (type) == ENUMERAL_TYPE)
- ;
- else if (TREE_CODE (val) == INTEGER_CST
- && int_fits_type_p (val, type))
- /* Change in signedness doesn't matter
- if a constant value is unaffected. */
- ;
- else if (TREE_CODE (TREE_TYPE (val)) == ENUMERAL_TYPE
- && int_fits_type_p (TYPE_MIN_VALUE (TREE_TYPE (val)), type)
- && int_fits_type_p (TYPE_MAX_VALUE (TREE_TYPE (val)), type))
- /* Change in signedness doesn't matter
- if an enum value is unaffected. */
- ;
- else if (TREE_UNSIGNED (type))
- warn_for_assignment ("%s as unsigned due to prototype", (char *) 0, name, parmnum + 1);
- else
- warn_for_assignment ("%s as signed due to prototype", (char *) 0, name, parmnum + 1);
- }
- }
-
- parmval = convert_for_assignment (type, val,
- (char *)0, /* arg passing */
- fundecl, name, parmnum + 1);
-
-#ifdef PROMOTE_PROTOTYPES
- if (TREE_CODE (type) == INTEGER_TYPE
- && (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)))
- parmval = default_conversion (parmval);
-#endif
- }
- result = tree_cons (NULL_TREE, parmval, result);
- }
- else if (TREE_CODE (TREE_TYPE (val)) == REAL_TYPE
- && (TYPE_PRECISION (TREE_TYPE (val))
- < TYPE_PRECISION (double_type_node)))
- /* Convert `float' to `double'. */
- result = tree_cons (NULL_TREE, convert (double_type_node, val), result);
- else
- /* Convert `short' and `char' to full-size `int'. */
- result = tree_cons (NULL_TREE, default_conversion (val), result);
-
- if (typetail)
- typetail = TREE_CHAIN (typetail);
- }
-
- if (typetail != 0 && TREE_VALUE (typetail) != void_type_node)
- {
- if (name)
- error ("too few arguments to function `%s'",
- IDENTIFIER_POINTER (name));
- else
- error ("too few arguments to function");
- }
-
- return nreverse (result);
-}
-
-/* This is the entry point used by the parser
- for binary operators in the input.
- In addition to constructing the expression,
- we check for operands that were written with other binary operators
- in a way that is likely to confuse the user. */
-
-tree
-parser_build_binary_op (code, arg1, arg2)
- enum tree_code code;
- tree arg1, arg2;
-{
- tree result = build_binary_op (code, arg1, arg2, 1);
-
- char class;
- char class1 = TREE_CODE_CLASS (TREE_CODE (arg1));
- char class2 = TREE_CODE_CLASS (TREE_CODE (arg2));
- enum tree_code code1 = ERROR_MARK;
- enum tree_code code2 = ERROR_MARK;
-
- if (class1 == 'e' || class1 == '1'
- || class1 == '2' || class1 == '<')
- code1 = C_EXP_ORIGINAL_CODE (arg1);
- if (class2 == 'e' || class2 == '1'
- || class2 == '2' || class2 == '<')
- code2 = C_EXP_ORIGINAL_CODE (arg2);
-
- /* Check for cases such as x+y<<z which users are likely
- to misinterpret. If parens are used, C_EXP_ORIGINAL_CODE
- is cleared to prevent these warnings. */
- if (warn_parentheses)
- {
- if (code == LSHIFT_EXPR || code == RSHIFT_EXPR)
- {
- if (code1 == PLUS_EXPR || code1 == MINUS_EXPR
- || code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning ("suggest parentheses around + or - inside shift");
- }
-
- if (code == TRUTH_ORIF_EXPR)
- {
- if (code1 == TRUTH_ANDIF_EXPR
- || code2 == TRUTH_ANDIF_EXPR)
- warning ("suggest parentheses around && within ||");
- }
-
- if (code == BIT_IOR_EXPR)
- {
- if (code1 == BIT_AND_EXPR || code1 == BIT_XOR_EXPR
- || code1 == PLUS_EXPR || code1 == MINUS_EXPR
- || code2 == BIT_AND_EXPR || code2 == BIT_XOR_EXPR
- || code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning ("suggest parentheses around arithmetic in operand of |");
- }
-
- if (code == BIT_XOR_EXPR)
- {
- if (code1 == BIT_AND_EXPR
- || code1 == PLUS_EXPR || code1 == MINUS_EXPR
- || code2 == BIT_AND_EXPR
- || code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning ("suggest parentheses around arithmetic in operand of ^");
- }
-
- if (code == BIT_AND_EXPR)
- {
- if (code1 == PLUS_EXPR || code1 == MINUS_EXPR
- || code2 == PLUS_EXPR || code2 == MINUS_EXPR)
- warning ("suggest parentheses around + or - in operand of &");
- }
- }
-
- /* Similarly, check for cases like 1<=i<=10 that are probably errors. */
- if (TREE_CODE_CLASS (code) == '<' && extra_warnings
- && (TREE_CODE_CLASS (code1) == '<' || TREE_CODE_CLASS (code2) == '<'))
- warning ("comparisons like X<=Y<=Z do not have their mathematical meaning");
-
- unsigned_conversion_warning (result, arg1);
- unsigned_conversion_warning (result, arg2);
- overflow_warning (result);
-
- class = TREE_CODE_CLASS (TREE_CODE (result));
-
- /* Record the code that was specified in the source,
- for the sake of warnings about confusing nesting. */
- if (class == 'e' || class == '1'
- || class == '2' || class == '<')
- C_SET_EXP_ORIGINAL_CODE (result, code);
- else
- {
- int flag = TREE_CONSTANT (result);
- /* We use NOP_EXPR rather than NON_LVALUE_EXPR
- so that convert_for_assignment won't strip it.
- That way, we get warnings for things like p = (1 - 1). */
- result = build1 (NOP_EXPR, TREE_TYPE (result), result);
- C_SET_EXP_ORIGINAL_CODE (result, code);
- TREE_CONSTANT (result) = flag;
- }
-
- return result;
-}
-
-/* Build a binary-operation expression without default conversions.
- CODE is the kind of expression to build.
- This function differs from `build' in several ways:
- the data type of the result is computed and recorded in it,
- warnings are generated if arg data types are invalid,
- special handling for addition and subtraction of pointers is known,
- and some optimization is done (operations on narrow ints
- are done in the narrower type when that gives the same result).
- Constant folding is also done before the result is returned.
-
- Note that the operands will never have enumeral types, or function
- or array types, because either they will have the default conversions
- performed or they have both just been converted to some other type in which
- the arithmetic is to be done. */
-
-tree
-build_binary_op (code, orig_op0, orig_op1, convert_p)
- enum tree_code code;
- tree orig_op0, orig_op1;
- int convert_p;
-{
- tree type0, type1;
- register enum tree_code code0, code1;
- tree op0, op1;
-
- /* Expression code to give to the expression when it is built.
- Normally this is CODE, which is what the caller asked for,
- but in some special cases we change it. */
- register enum tree_code resultcode = code;
-
- /* Data type in which the computation is to be performed.
- In the simplest cases this is the common type of the arguments. */
- register tree result_type = NULL;
-
- /* Nonzero means operands have already been type-converted
- in whatever way is necessary.
- Zero means they need to be converted to RESULT_TYPE. */
- int converted = 0;
-
- /* Nonzero means after finally constructing the expression
- give it this type. Otherwise, give it type RESULT_TYPE. */
- tree final_type = 0;
-
- /* Nonzero if this is an operation like MIN or MAX which can
- safely be computed in short if both args are promoted shorts.
- Also implies COMMON.
- -1 indicates a bitwise operation; this makes a difference
- in the exact conditions for when it is safe to do the operation
- in a narrower mode. */
- int shorten = 0;
-
- /* Nonzero if this is a comparison operation;
- if both args are promoted shorts, compare the original shorts.
- Also implies COMMON. */
- int short_compare = 0;
-
- /* Nonzero if this is a right-shift operation, which can be computed on the
- original short and then promoted if the operand is a promoted short. */
- int short_shift = 0;
-
- /* Nonzero means set RESULT_TYPE to the common type of the args. */
- int common = 0;
-
- if (convert_p)
- {
- op0 = default_conversion (orig_op0);
- op1 = default_conversion (orig_op1);
- }
- else
- {
- op0 = orig_op0;
- op1 = orig_op1;
- }
-
- type0 = TREE_TYPE (op0);
- type1 = TREE_TYPE (op1);
-
- /* The expression codes of the data types of the arguments tell us
- whether the arguments are integers, floating, pointers, etc. */
- code0 = TREE_CODE (type0);
- code1 = TREE_CODE (type1);
-
- /* Strip NON_LVALUE_EXPRs, etc., since we aren't using as an lvalue. */
- STRIP_TYPE_NOPS (op0);
- STRIP_TYPE_NOPS (op1);
-
- /* If an error was already reported for one of the arguments,
- avoid reporting another error. */
-
- if (code0 == ERROR_MARK || code1 == ERROR_MARK)
- return error_mark_node;
-
- switch (code)
- {
- case PLUS_EXPR:
- /* Handle the pointer + int case. */
- if (code0 == POINTER_TYPE && code1 == INTEGER_TYPE)
- return pointer_int_sum (PLUS_EXPR, op0, op1);
- else if (code1 == POINTER_TYPE && code0 == INTEGER_TYPE)
- return pointer_int_sum (PLUS_EXPR, op1, op0);
- else
- common = 1;
- break;
-
- case MINUS_EXPR:
- /* Subtraction of two similar pointers.
- We must subtract them as integers, then divide by object size. */
- if (code0 == POINTER_TYPE && code1 == POINTER_TYPE
- && comp_target_types (type0, type1))
- return pointer_diff (op0, op1);
- /* Handle pointer minus int. Just like pointer plus int. */
- else if (code0 == POINTER_TYPE && code1 == INTEGER_TYPE)
- return pointer_int_sum (MINUS_EXPR, op0, op1);
- else
- common = 1;
- break;
-
- case MULT_EXPR:
- common = 1;
- break;
-
- case TRUNC_DIV_EXPR:
- case CEIL_DIV_EXPR:
- case FLOOR_DIV_EXPR:
- case ROUND_DIV_EXPR:
- case EXACT_DIV_EXPR:
- if ((code0 == INTEGER_TYPE || code0 == REAL_TYPE
- || code0 == COMPLEX_TYPE)
- && (code1 == INTEGER_TYPE || code1 == REAL_TYPE
- || code1 == COMPLEX_TYPE))
- {
- if (!(code0 == INTEGER_TYPE && code1 == INTEGER_TYPE))
- resultcode = RDIV_EXPR;
- else
- /* When dividing two signed integers, you have to promote to int.
- E.g. (short) -32868 / (short) -1 doesn't fit in a short. */
- shorten = TREE_UNSIGNED (op0);
- common = 1;
- }
- break;
-
- case BIT_AND_EXPR:
- case BIT_ANDTC_EXPR:
- case BIT_IOR_EXPR:
- case BIT_XOR_EXPR:
- if (code0 == INTEGER_TYPE && code1 == INTEGER_TYPE)
- shorten = -1;
- /* If one operand is a constant, and the other is a short type
- that has been converted to an int,
- really do the work in the short type and then convert the
- result to int. If we are lucky, the constant will be 0 or 1
- in the short type, making the entire operation go away. */
- if (TREE_CODE (op0) == INTEGER_CST
- && TREE_CODE (op1) == NOP_EXPR
- && TYPE_PRECISION (type1) > TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op1, 0)))
- && TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op1, 0))))
- {
- final_type = result_type;
- op1 = TREE_OPERAND (op1, 0);
- result_type = TREE_TYPE (op1);
- }
- if (TREE_CODE (op1) == INTEGER_CST
- && TREE_CODE (op0) == NOP_EXPR
- && TYPE_PRECISION (type0) > TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op0, 0)))
- && TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op0, 0))))
- {
- final_type = result_type;
- op0 = TREE_OPERAND (op0, 0);
- result_type = TREE_TYPE (op0);
- }
- break;
-
- case TRUNC_MOD_EXPR:
- case FLOOR_MOD_EXPR:
- if (code0 == INTEGER_TYPE && code1 == INTEGER_TYPE)
- shorten = 1;
- break;
-
- case TRUTH_ANDIF_EXPR:
- case TRUTH_ORIF_EXPR:
- case TRUTH_AND_EXPR:
- case TRUTH_OR_EXPR:
- case TRUTH_XOR_EXPR:
- if ((code0 == INTEGER_TYPE || code0 == POINTER_TYPE
- || code0 == REAL_TYPE || code0 == COMPLEX_TYPE)
- && (code1 == INTEGER_TYPE || code1 == POINTER_TYPE
- || code1 == REAL_TYPE || code1 == COMPLEX_TYPE))
- {
- /* Result of these operations is always an int,
- but that does not mean the operands should be
- converted to ints! */
- result_type = integer_type_node;
- op0 = truthvalue_conversion (op0);
- op1 = truthvalue_conversion (op1);
- converted = 1;
- }
- break;
-
- /* Shift operations: result has same type as first operand;
- always convert second operand to int.
- Also set SHORT_SHIFT if shifting rightward. */
-
- case RSHIFT_EXPR:
- if (code0 == INTEGER_TYPE && code1 == INTEGER_TYPE)
- {
- if (TREE_CODE (op1) == INTEGER_CST)
- {
- if (tree_int_cst_lt (op1, integer_zero_node))
- warning ("right shift count is negative");
- else
- {
- if (TREE_INT_CST_LOW (op1) | TREE_INT_CST_HIGH (op1))
- short_shift = 1;
- if (TREE_INT_CST_HIGH (op1) != 0
- || ((unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (op1)
- >= TYPE_PRECISION (type0)))
- warning ("right shift count >= width of type");
- }
- }
- /* Use the type of the value to be shifted.
- This is what most traditional C compilers do. */
- result_type = type0;
- /* Unless traditional, convert the shift-count to an integer,
- regardless of size of value being shifted. */
- if (! flag_traditional)
- {
- if (TYPE_MAIN_VARIANT (TREE_TYPE (op1)) != integer_type_node)
- op1 = convert (integer_type_node, op1);
- /* Avoid converting op1 to result_type later. */
- converted = 1;
- }
- }
- break;
-
- case LSHIFT_EXPR:
- if (code0 == INTEGER_TYPE && code1 == INTEGER_TYPE)
- {
- if (TREE_CODE (op1) == INTEGER_CST)
- {
- if (tree_int_cst_lt (op1, integer_zero_node))
- warning ("left shift count is negative");
- else if (TREE_INT_CST_HIGH (op1) != 0
- || ((unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (op1)
- >= TYPE_PRECISION (type0)))
- warning ("left shift count >= width of type");
- }
- /* Use the type of the value to be shifted.
- This is what most traditional C compilers do. */
- result_type = type0;
- /* Unless traditional, convert the shift-count to an integer,
- regardless of size of value being shifted. */
- if (! flag_traditional)
- {
- if (TYPE_MAIN_VARIANT (TREE_TYPE (op1)) != integer_type_node)
- op1 = convert (integer_type_node, op1);
- /* Avoid converting op1 to result_type later. */
- converted = 1;
- }
- }
- break;
-
- case RROTATE_EXPR:
- case LROTATE_EXPR:
- if (code0 == INTEGER_TYPE && code1 == INTEGER_TYPE)
- {
- if (TREE_CODE (op1) == INTEGER_CST)
- {
- if (tree_int_cst_lt (op1, integer_zero_node))
- warning ("shift count is negative");
- else if (TREE_INT_CST_HIGH (op1) != 0
- || ((unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (op1)
- >= TYPE_PRECISION (type0)))
- warning ("shift count >= width of type");
- }
- /* Use the type of the value to be shifted.
- This is what most traditional C compilers do. */
- result_type = type0;
- /* Unless traditional, convert the shift-count to an integer,
- regardless of size of value being shifted. */
- if (! flag_traditional)
- {
- if (TYPE_MAIN_VARIANT (TREE_TYPE (op1)) != integer_type_node)
- op1 = convert (integer_type_node, op1);
- /* Avoid converting op1 to result_type later. */
- converted = 1;
- }
- }
- break;
-
- case EQ_EXPR:
- case NE_EXPR:
- /* Result of comparison is always int,
- but don't convert the args to int! */
- result_type = integer_type_node;
- converted = 1;
- if ((code0 == INTEGER_TYPE || code0 == REAL_TYPE
- || code0 == COMPLEX_TYPE)
- && (code1 == INTEGER_TYPE || code1 == REAL_TYPE
- || code1 == COMPLEX_TYPE))
- short_compare = 1;
- else if (code0 == POINTER_TYPE && code1 == POINTER_TYPE)
- {
- register tree tt0 = TREE_TYPE (type0);
- register tree tt1 = TREE_TYPE (type1);
- /* Anything compares with void *. void * compares with anything.
- Otherwise, the targets must be the same. */
- if (comp_target_types (type0, type1))
- ;
- else if (TYPE_MAIN_VARIANT (tt0) == void_type_node)
- {
- if (pedantic && !integer_zerop (op0)
- && TREE_CODE (tt1) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids comparison of `void *' with function pointer");
- }
- else if (TYPE_MAIN_VARIANT (tt1) == void_type_node)
- {
- if (pedantic && !integer_zerop (op1)
- && TREE_CODE (tt0) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids comparison of `void *' with function pointer");
- }
- else
- pedwarn ("comparison of distinct pointer types lacks a cast");
- }
- else if (code0 == POINTER_TYPE && TREE_CODE (op1) == INTEGER_CST
- && integer_zerop (op1))
- op1 = null_pointer_node;
- else if (code1 == POINTER_TYPE && TREE_CODE (op0) == INTEGER_CST
- && integer_zerop (op0))
- op0 = null_pointer_node;
- else if (code0 == POINTER_TYPE && code1 == INTEGER_TYPE)
- {
- if (! flag_traditional)
- pedwarn ("comparison between pointer and integer");
- op1 = convert (TREE_TYPE (op0), op1);
- }
- else if (code0 == INTEGER_TYPE && code1 == POINTER_TYPE)
- {
- if (! flag_traditional)
- pedwarn ("comparison between pointer and integer");
- op0 = convert (TREE_TYPE (op1), op0);
- }
- else
- /* If args are not valid, clear out RESULT_TYPE
- to cause an error message later. */
- result_type = 0;
- break;
-
- case MAX_EXPR:
- case MIN_EXPR:
- if ((code0 == INTEGER_TYPE || code0 == REAL_TYPE
- || code0 == COMPLEX_TYPE)
- && (code1 == INTEGER_TYPE || code1 == REAL_TYPE
- || code1 == COMPLEX_TYPE))
- shorten = 1;
- else if (code0 == POINTER_TYPE && code1 == POINTER_TYPE)
- {
- if (! comp_target_types (type0, type1))
- pedwarn ("comparison of distinct pointer types lacks a cast");
- else if (pedantic
- && TREE_CODE (TREE_TYPE (type0)) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids ordered comparisons of pointers to functions");
- result_type = common_type (type0, type1);
- }
- break;
-
- case LE_EXPR:
- case GE_EXPR:
- case LT_EXPR:
- case GT_EXPR:
- if ((code0 == INTEGER_TYPE || code0 == REAL_TYPE
- || code0 == COMPLEX_TYPE)
- && (code1 == INTEGER_TYPE || code1 == REAL_TYPE
- || code1 == COMPLEX_TYPE))
- short_compare = 1;
- else if (code0 == POINTER_TYPE && code1 == POINTER_TYPE)
- {
- if (! comp_target_types (type0, type1))
- pedwarn ("comparison of distinct pointer types lacks a cast");
- else if (pedantic
- && TREE_CODE (TREE_TYPE (type0)) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids ordered comparisons of pointers to functions");
- result_type = integer_type_node;
- }
- else if (code0 == POINTER_TYPE && TREE_CODE (op1) == INTEGER_CST
- && integer_zerop (op1))
- {
- result_type = integer_type_node;
- op1 = null_pointer_node;
- if (! flag_traditional)
- pedwarn ("ordered comparison of pointer with integer zero");
- }
- else if (code1 == POINTER_TYPE && TREE_CODE (op0) == INTEGER_CST
- && integer_zerop (op0))
- {
- result_type = integer_type_node;
- op0 = null_pointer_node;
- if (pedantic)
- pedwarn ("ordered comparison of pointer with integer zero");
- }
- else if (code0 == POINTER_TYPE && code1 == INTEGER_TYPE)
- {
- result_type = integer_type_node;
- if (! flag_traditional)
- pedwarn ("comparison between pointer and integer");
- op1 = convert (TREE_TYPE (op0), op1);
- }
- else if (code0 == INTEGER_TYPE && code1 == POINTER_TYPE)
- {
- result_type = integer_type_node;
- if (! flag_traditional)
- pedwarn ("comparison between pointer and integer");
- op0 = convert (TREE_TYPE (op1), op0);
- }
- converted = 1;
- break;
- }
-
- if ((code0 == INTEGER_TYPE || code0 == REAL_TYPE || code0 == COMPLEX_TYPE)
- &&
- (code1 == INTEGER_TYPE || code1 == REAL_TYPE || code1 == COMPLEX_TYPE))
- {
- int none_complex = (code0 != COMPLEX_TYPE && code1 != COMPLEX_TYPE);
-
- if (shorten || common || short_compare)
- result_type = common_type (type0, type1);
-
- /* For certain operations (which identify themselves by shorten != 0)
- if both args were extended from the same smaller type,
- do the arithmetic in that type and then extend.
-
- shorten !=0 and !=1 indicates a bitwise operation.
- For them, this optimization is safe only if
- both args are zero-extended or both are sign-extended.
- Otherwise, we might change the result.
- Eg, (short)-1 | (unsigned short)-1 is (int)-1
- but calculated in (unsigned short) it would be (unsigned short)-1. */
-
- if (shorten && none_complex)
- {
- int unsigned0, unsigned1;
- tree arg0 = get_narrower (op0, &unsigned0);
- tree arg1 = get_narrower (op1, &unsigned1);
- /* UNS is 1 if the operation to be done is an unsigned one. */
- int uns = TREE_UNSIGNED (result_type);
- tree type;
-
- final_type = result_type;
-
- /* Handle the case that OP0 (or OP1) does not *contain* a conversion
- but it *requires* conversion to FINAL_TYPE. */
-
- if ((TYPE_PRECISION (TREE_TYPE (op0))
- == TYPE_PRECISION (TREE_TYPE (arg0)))
- && TREE_TYPE (op0) != final_type)
- unsigned0 = TREE_UNSIGNED (TREE_TYPE (op0));
- if ((TYPE_PRECISION (TREE_TYPE (op1))
- == TYPE_PRECISION (TREE_TYPE (arg1)))
- && TREE_TYPE (op1) != final_type)
- unsigned1 = TREE_UNSIGNED (TREE_TYPE (op1));
-
- /* Now UNSIGNED0 is 1 if ARG0 zero-extends to FINAL_TYPE. */
-
- /* For bitwise operations, signedness of nominal type
- does not matter. Consider only how operands were extended. */
- if (shorten == -1)
- uns = unsigned0;
-
- /* Note that in all three cases below we refrain from optimizing
- an unsigned operation on sign-extended args.
- That would not be valid. */
-
- /* Both args variable: if both extended in same way
- from same width, do it in that width.
- Do it unsigned if args were zero-extended. */
- if ((TYPE_PRECISION (TREE_TYPE (arg0))
- < TYPE_PRECISION (result_type))
- && (TYPE_PRECISION (TREE_TYPE (arg1))
- == TYPE_PRECISION (TREE_TYPE (arg0)))
- && unsigned0 == unsigned1
- && (unsigned0 || !uns))
- result_type
- = signed_or_unsigned_type (unsigned0,
- common_type (TREE_TYPE (arg0), TREE_TYPE (arg1)));
- else if (TREE_CODE (arg0) == INTEGER_CST
- && (unsigned1 || !uns)
- && (TYPE_PRECISION (TREE_TYPE (arg1))
- < TYPE_PRECISION (result_type))
- && (type = signed_or_unsigned_type (unsigned1,
- TREE_TYPE (arg1)),
- int_fits_type_p (arg0, type)))
- result_type = type;
- else if (TREE_CODE (arg1) == INTEGER_CST
- && (unsigned0 || !uns)
- && (TYPE_PRECISION (TREE_TYPE (arg0))
- < TYPE_PRECISION (result_type))
- && (type = signed_or_unsigned_type (unsigned0,
- TREE_TYPE (arg0)),
- int_fits_type_p (arg1, type)))
- result_type = type;
- }
-
- /* Shifts can be shortened if shifting right. */
-
- if (short_shift)
- {
- int unsigned_arg;
- tree arg0 = get_narrower (op0, &unsigned_arg);
-
- final_type = result_type;
-
- if (arg0 == op0 && final_type == TREE_TYPE (op0))
- unsigned_arg = TREE_UNSIGNED (TREE_TYPE (op0));
-
- if (TYPE_PRECISION (TREE_TYPE (arg0)) < TYPE_PRECISION (result_type)
- /* If arg is sign-extended and then unsigned-shifted,
- we can simulate this with a signed shift in arg's type
- only if the extended result is at least twice as wide
- as the arg. Otherwise, the shift could use up all the
- ones made by sign-extension and bring in zeros.
- We can't optimize that case at all, but in most machines
- it never happens because available widths are 2**N. */
- && (!TREE_UNSIGNED (final_type)
- || unsigned_arg
- || 2 * TYPE_PRECISION (TREE_TYPE (arg0)) <= TYPE_PRECISION (result_type)))
- {
- /* Do an unsigned shift if the operand was zero-extended. */
- result_type
- = signed_or_unsigned_type (unsigned_arg,
- TREE_TYPE (arg0));
- /* Convert value-to-be-shifted to that type. */
- if (TREE_TYPE (op0) != result_type)
- op0 = convert (result_type, op0);
- converted = 1;
- }
- }
-
- /* Comparison operations are shortened too but differently.
- They identify themselves by setting short_compare = 1. */
-
- if (short_compare && none_complex)
- {
- /* Don't write &op0, etc., because that would prevent op0
- from being kept in a register.
- Instead, make copies of the our local variables and
- pass the copies by reference, then copy them back afterward. */
- tree xop0 = op0, xop1 = op1, xresult_type = result_type;
- enum tree_code xresultcode = resultcode;
- tree val
- = shorten_compare (&xop0, &xop1, &xresult_type, &xresultcode);
- if (val != 0)
- return val;
- op0 = xop0, op1 = xop1, result_type = xresult_type;
- resultcode = xresultcode;
-
- if (extra_warnings)
- {
- tree op0_type = TREE_TYPE (orig_op0);
- tree op1_type = TREE_TYPE (orig_op1);
- int op0_unsigned = TREE_UNSIGNED (op0_type);
- int op1_unsigned = TREE_UNSIGNED (op1_type);
-
- /* Give warnings for comparisons between signed and unsigned
- quantities that will fail. Do not warn if the signed quantity
- is an unsuffixed integer literal (or some static constant
- expression involving such literals) and it is positive.
- Do not warn if the width of the unsigned quantity is less
- than that of the signed quantity, since in this case all
- values of the unsigned quantity fit in the signed quantity.
- Do not warn if the signed type is the same size as the
- result_type since sign extension does not cause trouble in
- this case. */
- /* Do the checking based on the original operand trees, so that
- casts will be considered, but default promotions won't be. */
- if (op0_unsigned != op1_unsigned
- && ((op0_unsigned
- && TYPE_PRECISION (op0_type) >= TYPE_PRECISION (op1_type)
- && TYPE_PRECISION (op0_type) < TYPE_PRECISION (result_type)
- && (TREE_CODE (op1) != INTEGER_CST
- || (TREE_CODE (op1) == INTEGER_CST
- && INT_CST_LT (op1, integer_zero_node))))
- ||
- (op1_unsigned
- && TYPE_PRECISION (op1_type) >= TYPE_PRECISION (op0_type)
- && TYPE_PRECISION (op1_type) < TYPE_PRECISION (result_type)
- && (TREE_CODE (op0) != INTEGER_CST
- || (TREE_CODE (op0) == INTEGER_CST
- && INT_CST_LT (op0, integer_zero_node))))))
- warning ("comparison between signed and unsigned");
- }
- }
- }
-
- /* At this point, RESULT_TYPE must be nonzero to avoid an error message.
- If CONVERTED is zero, both args will be converted to type RESULT_TYPE.
- Then the expression will be built.
- It will be given type FINAL_TYPE if that is nonzero;
- otherwise, it will be given type RESULT_TYPE. */
-
- if (!result_type)
- {
- binary_op_error (code);
- return error_mark_node;
- }
-
- if (! converted)
- {
- if (TREE_TYPE (op0) != result_type)
- op0 = convert (result_type, op0);
- if (TREE_TYPE (op1) != result_type)
- op1 = convert (result_type, op1);
- }
-
- {
- register tree result = build (resultcode, result_type, op0, op1);
- register tree folded;
-
- folded = fold (result);
- if (folded == result)
- TREE_CONSTANT (folded) = TREE_CONSTANT (op0) & TREE_CONSTANT (op1);
- if (final_type != 0)
- return convert (final_type, folded);
- return folded;
- }
-}
-
-/* Return a tree for the sum or difference (RESULTCODE says which)
- of pointer PTROP and integer INTOP. */
-
-static tree
-pointer_int_sum (resultcode, ptrop, intop)
- enum tree_code resultcode;
- register tree ptrop, intop;
-{
- tree size_exp;
-
- register tree result;
- register tree folded;
-
- /* The result is a pointer of the same type that is being added. */
-
- register tree result_type = TREE_TYPE (ptrop);
-
- if (TREE_CODE (TREE_TYPE (result_type)) == VOID_TYPE)
- {
- if (pedantic || warn_pointer_arith)
- pedwarn ("pointer of type `void *' used in arithmetic");
- size_exp = integer_one_node;
- }
- else if (TREE_CODE (TREE_TYPE (result_type)) == FUNCTION_TYPE)
- {
- if (pedantic || warn_pointer_arith)
- pedwarn ("pointer to a function used in arithmetic");
- size_exp = integer_one_node;
- }
- else
- size_exp = c_size_in_bytes (TREE_TYPE (result_type));
-
- /* If what we are about to multiply by the size of the elements
- contains a constant term, apply distributive law
- and multiply that constant term separately.
- This helps produce common subexpressions. */
-
- if ((TREE_CODE (intop) == PLUS_EXPR || TREE_CODE (intop) == MINUS_EXPR)
- && ! TREE_CONSTANT (intop)
- && TREE_CONSTANT (TREE_OPERAND (intop, 1))
- && TREE_CONSTANT (size_exp)
- /* If the constant comes from pointer subtraction,
- skip this optimization--it would cause an error. */
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (intop, 0))) == INTEGER_TYPE)
- {
- enum tree_code subcode = resultcode;
- tree int_type = TREE_TYPE (intop);
- if (TREE_CODE (intop) == MINUS_EXPR)
- subcode = (subcode == PLUS_EXPR ? MINUS_EXPR : PLUS_EXPR);
- /* Convert both subexpression types to the type of intop,
- because weird cases involving pointer arithmetic
- can result in a sum or difference with different type args. */
- ptrop = build_binary_op (subcode, ptrop,
- convert (int_type, TREE_OPERAND (intop, 1)), 1);
- intop = convert (int_type, TREE_OPERAND (intop, 0));
- }
-
- /* Convert the integer argument to a type the same size as a pointer
- so the multiply won't overflow spuriously. */
-
- if (TYPE_PRECISION (TREE_TYPE (intop)) != POINTER_SIZE)
- intop = convert (type_for_size (POINTER_SIZE, 0), intop);
-
- /* Replace the integer argument
- with a suitable product by the object size. */
-
- intop = build_binary_op (MULT_EXPR, intop, size_exp, 1);
-
- /* Create the sum or difference. */
-
- result = build (resultcode, result_type, ptrop, intop);
-
- folded = fold (result);
- if (folded == result)
- TREE_CONSTANT (folded) = TREE_CONSTANT (ptrop) & TREE_CONSTANT (intop);
- return folded;
-}
-
-/* Return a tree for the difference of pointers OP0 and OP1.
- The resulting tree has type int. */
-
-static tree
-pointer_diff (op0, op1)
- register tree op0, op1;
-{
- register tree result, folded;
- tree restype = ptrdiff_type_node;
-
- tree target_type = TREE_TYPE (TREE_TYPE (op0));
-
- if (pedantic || warn_pointer_arith)
- {
- if (TREE_CODE (target_type) == VOID_TYPE)
- pedwarn ("pointer of type `void *' used in subtraction");
- if (TREE_CODE (target_type) == FUNCTION_TYPE)
- pedwarn ("pointer to a function used in subtraction");
- }
-
- /* First do the subtraction as integers;
- then drop through to build the divide operator. */
-
- op0 = build_binary_op (MINUS_EXPR, convert (restype, op0),
- convert (restype, op1), 1);
- /* This generates an error if op1 is pointer to incomplete type. */
- if (TYPE_SIZE (TREE_TYPE (TREE_TYPE (op1))) == 0)
- error ("arithmetic on pointer to an incomplete type");
- /* This generates an error if op0 is pointer to incomplete type. */
- op1 = c_size_in_bytes (target_type);
-
- /* Divide by the size, in easiest possible way. */
-
- result = build (EXACT_DIV_EXPR, restype, op0, op1);
-
- folded = fold (result);
- if (folded == result)
- TREE_CONSTANT (folded) = TREE_CONSTANT (op0) & TREE_CONSTANT (op1);
- return folded;
-}
-
-/* Construct and perhaps optimize a tree representation
- for a unary operation. CODE, a tree_code, specifies the operation
- and XARG is the operand. NOCONVERT nonzero suppresses
- the default promotions (such as from short to int). */
-
-tree
-build_unary_op (code, xarg, noconvert)
- enum tree_code code;
- tree xarg;
- int noconvert;
-{
- /* No default_conversion here. It causes trouble for ADDR_EXPR. */
- register tree arg = xarg;
- register tree argtype = 0;
- register enum tree_code typecode = TREE_CODE (TREE_TYPE (arg));
- char *errstring = NULL;
- tree val;
-
- if (typecode == ERROR_MARK)
- return error_mark_node;
- if (typecode == ENUMERAL_TYPE)
- typecode = INTEGER_TYPE;
-
- switch (code)
- {
- case CONVERT_EXPR:
- /* This is used for unary plus, because a CONVERT_EXPR
- is enough to prevent anybody from looking inside for
- associativity, but won't generate any code. */
- if (!(typecode == INTEGER_TYPE || typecode == REAL_TYPE
- || typecode == COMPLEX_TYPE))
- errstring = "wrong type argument to unary plus";
- else if (!noconvert)
- arg = default_conversion (arg);
- break;
-
- case NEGATE_EXPR:
- if (!(typecode == INTEGER_TYPE || typecode == REAL_TYPE
- || typecode == COMPLEX_TYPE))
- errstring = "wrong type argument to unary minus";
- else if (!noconvert)
- arg = default_conversion (arg);
- break;
-
- case BIT_NOT_EXPR:
- if (typecode != INTEGER_TYPE)
- errstring = "wrong type argument to bit-complement";
- else if (!noconvert)
- arg = default_conversion (arg);
- break;
-
- case ABS_EXPR:
- if (!(typecode == INTEGER_TYPE || typecode == REAL_TYPE
- || typecode == COMPLEX_TYPE))
- errstring = "wrong type argument to abs";
- else if (!noconvert)
- arg = default_conversion (arg);
- break;
-
- case TRUTH_NOT_EXPR:
- if (typecode != INTEGER_TYPE
- && typecode != REAL_TYPE && typecode != POINTER_TYPE
- && typecode != COMPLEX_TYPE
- /* These will convert to a pointer. */
- && typecode != ARRAY_TYPE && typecode != FUNCTION_TYPE)
- {
- errstring = "wrong type argument to unary exclamation mark";
- break;
- }
- arg = truthvalue_conversion (arg);
- return invert_truthvalue (arg);
-
- case NOP_EXPR:
- break;
-
- case REALPART_EXPR:
- if (TREE_CODE (arg) == COMPLEX_CST)
- return TREE_REALPART (arg);
- else if (TREE_CODE (TREE_TYPE (arg)) == COMPLEX_TYPE)
- return fold (build1 (REALPART_EXPR, TREE_TYPE (TREE_TYPE (arg)), arg));
- else
- return arg;
-
- case IMAGPART_EXPR:
- if (TREE_CODE (arg) == COMPLEX_CST)
- return TREE_IMAGPART (arg);
- else if (TREE_CODE (TREE_TYPE (arg)) == COMPLEX_TYPE)
- return fold (build1 (IMAGPART_EXPR, TREE_TYPE (TREE_TYPE (arg)), arg));
- else
- return convert (TREE_TYPE (arg), integer_zero_node);
-
- case PREINCREMENT_EXPR:
- case POSTINCREMENT_EXPR:
- case PREDECREMENT_EXPR:
- case POSTDECREMENT_EXPR:
- /* Handle complex lvalues (when permitted)
- by reduction to simpler cases. */
-
- val = unary_complex_lvalue (code, arg);
- if (val != 0)
- return val;
-
- /* Increment or decrement the real part of the value,
- and don't change the imaginary part. */
- if (typecode == COMPLEX_TYPE)
- {
- tree real, imag;
-
- arg = stabilize_reference (arg);
- real = build_unary_op (REALPART_EXPR, arg, 1);
- imag = build_unary_op (IMAGPART_EXPR, arg, 1);
- return build (COMPLEX_EXPR, TREE_TYPE (arg),
- build_unary_op (code, real, 1), imag);
- }
-
- /* Report invalid types. */
-
- if (typecode != POINTER_TYPE
- && typecode != INTEGER_TYPE && typecode != REAL_TYPE)
- {
- if (code == PREINCREMENT_EXPR || code == POSTINCREMENT_EXPR)
- errstring ="wrong type argument to increment";
- else
- errstring ="wrong type argument to decrement";
- break;
- }
-
- {
- register tree inc;
- tree result_type = TREE_TYPE (arg);
-
- arg = get_unwidened (arg, 0);
- argtype = TREE_TYPE (arg);
-
- /* Compute the increment. */
-
- if (typecode == POINTER_TYPE)
- {
- /* If pointer target is an undefined struct,
- we just cannot know how to do the arithmetic. */
- if (TYPE_SIZE (TREE_TYPE (result_type)) == 0)
- error ("%s of pointer to unknown structure",
- ((code == PREINCREMENT_EXPR
- || code == POSTINCREMENT_EXPR)
- ? "increment" : "decrement"));
- else if ((pedantic || warn_pointer_arith)
- && (TREE_CODE (TREE_TYPE (result_type)) == FUNCTION_TYPE
- || TREE_CODE (TREE_TYPE (result_type)) == VOID_TYPE))
- pedwarn ("wrong type argument to %s",
- ((code == PREINCREMENT_EXPR
- || code == POSTINCREMENT_EXPR)
- ? "increment" : "decrement"));
- inc = c_sizeof_nowarn (TREE_TYPE (result_type));
- }
- else
- inc = integer_one_node;
-
- inc = convert (argtype, inc);
-
- /* Handle incrementing a cast-expression. */
-
- while (1)
- switch (TREE_CODE (arg))
- {
- case NOP_EXPR:
- case CONVERT_EXPR:
- case FLOAT_EXPR:
- case FIX_TRUNC_EXPR:
- case FIX_FLOOR_EXPR:
- case FIX_ROUND_EXPR:
- case FIX_CEIL_EXPR:
- pedantic_lvalue_warning (CONVERT_EXPR);
- /* If the real type has the same machine representation
- as the type it is cast to, we can make better output
- by adding directly to the inside of the cast. */
- if ((TREE_CODE (TREE_TYPE (arg))
- == TREE_CODE (TREE_TYPE (TREE_OPERAND (arg, 0))))
- && (TYPE_MODE (TREE_TYPE (arg))
- == TYPE_MODE (TREE_TYPE (TREE_OPERAND (arg, 0)))))
- arg = TREE_OPERAND (arg, 0);
- else
- {
- tree incremented, modify, value;
- arg = stabilize_reference (arg);
- if (code == PREINCREMENT_EXPR || code == PREDECREMENT_EXPR)
- value = arg;
- else
- value = save_expr (arg);
- incremented = build (((code == PREINCREMENT_EXPR
- || code == POSTINCREMENT_EXPR)
- ? PLUS_EXPR : MINUS_EXPR),
- argtype, value, inc);
- TREE_SIDE_EFFECTS (incremented) = 1;
- modify = build_modify_expr (arg, NOP_EXPR, incremented);
- value = build (COMPOUND_EXPR, TREE_TYPE (arg), modify, value);
- TREE_USED (value) = 1;
- return value;
- }
- break;
-
- default:
- goto give_up;
- }
- give_up:
-
- /* Complain about anything else that is not a true lvalue. */
- if (!lvalue_or_else (arg, ((code == PREINCREMENT_EXPR
- || code == POSTINCREMENT_EXPR)
- ? "increment" : "decrement")))
- return error_mark_node;
-
- /* Report a read-only lvalue. */
- if (TREE_READONLY (arg))
- readonly_warning (arg,
- ((code == PREINCREMENT_EXPR
- || code == POSTINCREMENT_EXPR)
- ? "increment" : "decrement"));
-
- val = build (code, TREE_TYPE (arg), arg, inc);
- TREE_SIDE_EFFECTS (val) = 1;
- val = convert (result_type, val);
- if (TREE_CODE (val) != code)
- TREE_NO_UNUSED_WARNING (val) = 1;
- return val;
- }
-
- case ADDR_EXPR:
- /* Note that this operation never does default_conversion
- regardless of NOCONVERT. */
-
- /* Let &* cancel out to simplify resulting code. */
- if (TREE_CODE (arg) == INDIRECT_REF)
- {
- /* Don't let this be an lvalue. */
- if (lvalue_p (TREE_OPERAND (arg, 0)))
- return non_lvalue (TREE_OPERAND (arg, 0));
- return TREE_OPERAND (arg, 0);
- }
-
- /* For &x[y], return x+y */
- if (TREE_CODE (arg) == ARRAY_REF)
- {
- if (mark_addressable (TREE_OPERAND (arg, 0)) == 0)
- return error_mark_node;
- return build_binary_op (PLUS_EXPR, TREE_OPERAND (arg, 0),
- TREE_OPERAND (arg, 1), 1);
- }
-
- /* Handle complex lvalues (when permitted)
- by reduction to simpler cases. */
- val = unary_complex_lvalue (code, arg);
- if (val != 0)
- return val;
-
-#if 0 /* Turned off because inconsistent;
- float f; *&(int)f = 3.4 stores in int format
- whereas (int)f = 3.4 stores in float format. */
- /* Address of a cast is just a cast of the address
- of the operand of the cast. */
- switch (TREE_CODE (arg))
- {
- case NOP_EXPR:
- case CONVERT_EXPR:
- case FLOAT_EXPR:
- case FIX_TRUNC_EXPR:
- case FIX_FLOOR_EXPR:
- case FIX_ROUND_EXPR:
- case FIX_CEIL_EXPR:
- if (pedantic)
- pedwarn ("ANSI C forbids the address of a cast expression");
- return convert (build_pointer_type (TREE_TYPE (arg)),
- build_unary_op (ADDR_EXPR, TREE_OPERAND (arg, 0),
- 0));
- }
-#endif
-
- /* Allow the address of a constructor if all the elements
- are constant. */
- if (TREE_CODE (arg) == CONSTRUCTOR && TREE_CONSTANT (arg))
- ;
- /* Anything not already handled and not a true memory reference
- is an error. */
- else if (typecode != FUNCTION_TYPE && !lvalue_or_else (arg, "unary `&'"))
- return error_mark_node;
-
- /* Ordinary case; arg is a COMPONENT_REF or a decl. */
- argtype = TREE_TYPE (arg);
- /* If the lvalue is const or volatile,
- merge that into the type that the address will point to. */
- if (TREE_CODE_CLASS (TREE_CODE (arg)) == 'd'
- || TREE_CODE_CLASS (TREE_CODE (arg)) == 'r')
- {
- if (TREE_READONLY (arg) || TREE_THIS_VOLATILE (arg))
- argtype = c_build_type_variant (argtype,
- TREE_READONLY (arg),
- TREE_THIS_VOLATILE (arg));
- }
-
- argtype = build_pointer_type (argtype);
-
- if (mark_addressable (arg) == 0)
- return error_mark_node;
-
- {
- tree addr;
-
- if (TREE_CODE (arg) == COMPONENT_REF)
- {
- tree field = TREE_OPERAND (arg, 1);
-
- addr = build_unary_op (ADDR_EXPR, TREE_OPERAND (arg, 0), 0);
-
- if (DECL_BIT_FIELD (field))
- {
- error ("attempt to take address of bit-field structure member `%s'",
- IDENTIFIER_POINTER (DECL_NAME (field)));
- return error_mark_node;
- }
-
- addr = convert (argtype, addr);
-
- if (! integer_zerop (DECL_FIELD_BITPOS (field)))
- {
- tree offset
- = size_binop (EASY_DIV_EXPR, DECL_FIELD_BITPOS (field),
- size_int (BITS_PER_UNIT));
- int flag = TREE_CONSTANT (addr);
- addr = fold (build (PLUS_EXPR, argtype,
- addr, convert (argtype, offset)));
- TREE_CONSTANT (addr) = flag;
- }
- }
- else
- addr = build1 (code, argtype, arg);
-
- /* Address of a static or external variable or
- file-scope function counts as a constant. */
- if (staticp (arg)
- && ! (TREE_CODE (arg) == FUNCTION_DECL
- && DECL_CONTEXT (arg) != 0))
- TREE_CONSTANT (addr) = 1;
- return addr;
- }
- }
-
- if (!errstring)
- {
- if (argtype == 0)
- argtype = TREE_TYPE (arg);
- return fold (build1 (code, argtype, arg));
- }
-
- error (errstring);
- return error_mark_node;
-}
-
-#if 0
-/* If CONVERSIONS is a conversion expression or a nested sequence of such,
- convert ARG with the same conversions in the same order
- and return the result. */
-
-static tree
-convert_sequence (conversions, arg)
- tree conversions;
- tree arg;
-{
- switch (TREE_CODE (conversions))
- {
- case NOP_EXPR:
- case CONVERT_EXPR:
- case FLOAT_EXPR:
- case FIX_TRUNC_EXPR:
- case FIX_FLOOR_EXPR:
- case FIX_ROUND_EXPR:
- case FIX_CEIL_EXPR:
- return convert (TREE_TYPE (conversions),
- convert_sequence (TREE_OPERAND (conversions, 0),
- arg));
-
- default:
- return arg;
- }
-}
-#endif /* 0 */
-
-/* Return nonzero if REF is an lvalue valid for this language.
- Lvalues can be assigned, unless their type has TYPE_READONLY.
- Lvalues can have their address taken, unless they have DECL_REGISTER. */
-
-int
-lvalue_p (ref)
- tree ref;
-{
- register enum tree_code code = TREE_CODE (ref);
-
- switch (code)
- {
- case REALPART_EXPR:
- case IMAGPART_EXPR:
- case COMPONENT_REF:
- return lvalue_p (TREE_OPERAND (ref, 0));
-
- case STRING_CST:
- return 1;
-
- case INDIRECT_REF:
- case ARRAY_REF:
- case VAR_DECL:
- case PARM_DECL:
- case RESULT_DECL:
- case ERROR_MARK:
- if (TREE_CODE (TREE_TYPE (ref)) != FUNCTION_TYPE
- && TREE_CODE (TREE_TYPE (ref)) != METHOD_TYPE)
- return 1;
- break;
- }
- return 0;
-}
-
-/* Return nonzero if REF is an lvalue valid for this language;
- otherwise, print an error message and return zero. */
-
-int
-lvalue_or_else (ref, string)
- tree ref;
- char *string;
-{
- int win = lvalue_p (ref);
- if (! win)
- error ("invalid lvalue in %s", string);
- return win;
-}
-
-/* Apply unary lvalue-demanding operator CODE to the expression ARG
- for certain kinds of expressions which are not really lvalues
- but which we can accept as lvalues.
-
- If ARG is not a kind of expression we can handle, return zero. */
-
-static tree
-unary_complex_lvalue (code, arg)
- enum tree_code code;
- tree arg;
-{
- /* Handle (a, b) used as an "lvalue". */
- if (TREE_CODE (arg) == COMPOUND_EXPR)
- {
- tree real_result = build_unary_op (code, TREE_OPERAND (arg, 1), 0);
- pedantic_lvalue_warning (COMPOUND_EXPR);
- return build (COMPOUND_EXPR, TREE_TYPE (real_result),
- TREE_OPERAND (arg, 0), real_result);
- }
-
- /* Handle (a ? b : c) used as an "lvalue". */
- if (TREE_CODE (arg) == COND_EXPR)
- {
- pedantic_lvalue_warning (COND_EXPR);
- return (build_conditional_expr
- (TREE_OPERAND (arg, 0),
- build_unary_op (code, TREE_OPERAND (arg, 1), 0),
- build_unary_op (code, TREE_OPERAND (arg, 2), 0)));
- }
-
- return 0;
-}
-
-/* If pedantic, warn about improper lvalue. CODE is either COND_EXPR
- COMPOUND_EXPR, or CONVERT_EXPR (for casts). */
-
-static void
-pedantic_lvalue_warning (code)
- enum tree_code code;
-{
- if (pedantic)
- pedwarn ("ANSI C forbids use of %s expressions as lvalues",
- code == COND_EXPR ? "conditional"
- : code == COMPOUND_EXPR ? "compound" : "cast");
-}
-
-/* Warn about storing in something that is `const'. */
-
-void
-readonly_warning (arg, string)
- tree arg;
- char *string;
-{
- char buf[80];
- strcpy (buf, string);
-
- /* Forbid assignments to iterators. */
- if (TREE_CODE (arg) == VAR_DECL && ITERATOR_P (arg))
- {
- strcat (buf, " of iterator `%s'");
- pedwarn (buf, IDENTIFIER_POINTER (DECL_NAME (arg)));
- }
-
- if (TREE_CODE (arg) == COMPONENT_REF)
- {
- if (TYPE_READONLY (TREE_TYPE (TREE_OPERAND (arg, 0))))
- readonly_warning (TREE_OPERAND (arg, 0), string);
- else
- {
- strcat (buf, " of read-only member `%s'");
- pedwarn (buf, IDENTIFIER_POINTER (DECL_NAME (TREE_OPERAND (arg, 1))));
- }
- }
- else if (TREE_CODE (arg) == VAR_DECL)
- {
- strcat (buf, " of read-only variable `%s'");
- pedwarn (buf, IDENTIFIER_POINTER (DECL_NAME (arg)));
- }
- else
- {
- pedwarn ("%s of read-only location", buf);
- }
-}
-
-/* Mark EXP saying that we need to be able to take the
- address of it; it should not be allocated in a register.
- Value is 1 if successful. */
-
-int
-mark_addressable (exp)
- tree exp;
-{
- register tree x = exp;
- while (1)
- switch (TREE_CODE (x))
- {
- case ADDR_EXPR:
- case COMPONENT_REF:
- case ARRAY_REF:
- x = TREE_OPERAND (x, 0);
- break;
-
- case CONSTRUCTOR:
- TREE_ADDRESSABLE (x) = 1;
- return 1;
-
- case VAR_DECL:
- case CONST_DECL:
- case PARM_DECL:
- case RESULT_DECL:
- if (DECL_REGISTER (x) && !TREE_ADDRESSABLE (x)
- && DECL_NONLOCAL (x))
- {
- if (TREE_PUBLIC (x))
- {
- error ("global register variable `%s' used in nested function",
- IDENTIFIER_POINTER (DECL_NAME (x)));
- return 0;
- }
- pedwarn ("register variable `%s' used in nested function",
- IDENTIFIER_POINTER (DECL_NAME (x)));
- }
- else if (DECL_REGISTER (x) && !TREE_ADDRESSABLE (x))
- {
- if (TREE_PUBLIC (x))
- {
- error ("address of global register variable `%s' requested",
- IDENTIFIER_POINTER (DECL_NAME (x)));
- return 0;
- }
- pedwarn ("address of register variable `%s' requested",
- IDENTIFIER_POINTER (DECL_NAME (x)));
- }
- put_var_into_stack (x);
-
- /* drops in */
- case FUNCTION_DECL:
- TREE_ADDRESSABLE (x) = 1;
-#if 0 /* poplevel deals with this now. */
- if (DECL_CONTEXT (x) == 0)
- TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (x)) = 1;
-#endif
-
- default:
- return 1;
- }
-}
-
-/* Build and return a conditional expression IFEXP ? OP1 : OP2. */
-
-tree
-build_conditional_expr (ifexp, op1, op2)
- tree ifexp, op1, op2;
-{
- register tree type1;
- register tree type2;
- register enum tree_code code1;
- register enum tree_code code2;
- register tree result_type = NULL;
-
- /* If second operand is omitted, it is the same as the first one;
- make sure it is calculated only once. */
- if (op1 == 0)
- {
- if (pedantic)
- pedwarn ("ANSI C forbids omitting the middle term of a ?: expression");
- ifexp = op1 = save_expr (ifexp);
- }
-
- ifexp = truthvalue_conversion (default_conversion (ifexp));
-
-#if 0 /* Produces wrong result if within sizeof. */
- /* Don't promote the operands separately if they promote
- the same way. Return the unpromoted type and let the combined
- value get promoted if necessary. */
-
- if (TREE_TYPE (op1) == TREE_TYPE (op2)
- && TREE_CODE (TREE_TYPE (op1)) != ARRAY_TYPE
- && TREE_CODE (TREE_TYPE (op1)) != ENUMERAL_TYPE
- && TREE_CODE (TREE_TYPE (op1)) != FUNCTION_TYPE)
- {
- if (TREE_CODE (ifexp) == INTEGER_CST)
- return (integer_zerop (ifexp) ? op2 : op1);
-
- return fold (build (COND_EXPR, TREE_TYPE (op1), ifexp, op1, op2));
- }
-#endif
-
- /* Promote both alternatives. */
-
- if (TREE_CODE (TREE_TYPE (op1)) != VOID_TYPE)
- op1 = default_conversion (op1);
- if (TREE_CODE (TREE_TYPE (op2)) != VOID_TYPE)
- op2 = default_conversion (op2);
-
- if (TREE_CODE (ifexp) == ERROR_MARK
- || TREE_CODE (TREE_TYPE (op1)) == ERROR_MARK
- || TREE_CODE (TREE_TYPE (op2)) == ERROR_MARK)
- return error_mark_node;
-
- type1 = TREE_TYPE (op1);
- code1 = TREE_CODE (type1);
- type2 = TREE_TYPE (op2);
- code2 = TREE_CODE (type2);
-
- /* Quickly detect the usual case where op1 and op2 have the same type
- after promotion. */
- if (TYPE_MAIN_VARIANT (type1) == TYPE_MAIN_VARIANT (type2))
- {
- if (type1 == type2)
- result_type = type1;
- else
- result_type = TYPE_MAIN_VARIANT (type1);
- }
- else if ((code1 == INTEGER_TYPE || code1 == REAL_TYPE)
- && (code2 == INTEGER_TYPE || code2 == REAL_TYPE))
- {
- result_type = common_type (type1, type2);
- }
- else if (code1 == VOID_TYPE || code2 == VOID_TYPE)
- {
- if (pedantic && (code1 != VOID_TYPE || code2 != VOID_TYPE))
- pedwarn ("ANSI C forbids conditional expr with only one void side");
- result_type = void_type_node;
- }
- else if (code1 == POINTER_TYPE && code2 == POINTER_TYPE)
- {
- if (comp_target_types (type1, type2))
- result_type = common_type (type1, type2);
- else if (integer_zerop (op1) && TREE_TYPE (type1) == void_type_node)
- result_type = qualify_type (type2, type1);
- else if (integer_zerop (op2) && TREE_TYPE (type2) == void_type_node)
- result_type = qualify_type (type1, type2);
- else if (TYPE_MAIN_VARIANT (TREE_TYPE (type1)) == void_type_node)
- {
- if (pedantic && TREE_CODE (TREE_TYPE (type2)) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids conditional expr between `void *' and function pointer");
- result_type = qualify_type (type1, type2);
- }
- else if (TYPE_MAIN_VARIANT (TREE_TYPE (type2)) == void_type_node)
- {
- if (pedantic && TREE_CODE (TREE_TYPE (type1)) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids conditional expr between `void *' and function pointer");
- result_type = qualify_type (type2, type1);
- }
- else
- {
- pedwarn ("pointer type mismatch in conditional expression");
- result_type = build_pointer_type (void_type_node);
- }
- }
- else if (code1 == POINTER_TYPE && code2 == INTEGER_TYPE)
- {
- if (! integer_zerop (op2))
- pedwarn ("pointer/integer type mismatch in conditional expression");
- else
- {
- op2 = null_pointer_node;
-#if 0 /* The spec seems to say this is permitted. */
- if (pedantic && TREE_CODE (type1) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids conditional expr between 0 and function pointer");
-#endif
- }
- result_type = type1;
- }
- else if (code2 == POINTER_TYPE && code1 == INTEGER_TYPE)
- {
- if (!integer_zerop (op1))
- pedwarn ("pointer/integer type mismatch in conditional expression");
- else
- {
- op1 = null_pointer_node;
-#if 0 /* The spec seems to say this is permitted. */
- if (pedantic && TREE_CODE (type2) == FUNCTION_TYPE)
- pedwarn ("ANSI C forbids conditional expr between 0 and function pointer");
-#endif
- }
- result_type = type2;
- }
-
- if (!result_type)
- {
- if (flag_cond_mismatch)
- result_type = void_type_node;
- else
- {
- error ("type mismatch in conditional expression");
- return error_mark_node;
- }
- }
-
- /* Merge const and volatile flags of the incoming types. */
- result_type
- = build_type_variant (result_type,
- TREE_READONLY (op1) || TREE_READONLY (op2),
- TREE_THIS_VOLATILE (op1) || TREE_THIS_VOLATILE (op2));
-
- if (result_type != TREE_TYPE (op1))
- op1 = convert_and_check (result_type, op1);
- if (result_type != TREE_TYPE (op2))
- op2 = convert_and_check (result_type, op2);
-
-#if 0
- if (code1 == RECORD_TYPE || code1 == UNION_TYPE)
- {
- result_type = TREE_TYPE (op1);
- if (TREE_CONSTANT (ifexp))
- return (integer_zerop (ifexp) ? op2 : op1);
-
- if (TYPE_MODE (result_type) == BLKmode)
- {
- register tree tempvar
- = build_decl (VAR_DECL, NULL_TREE, result_type);
- register tree xop1 = build_modify_expr (tempvar, op1);
- register tree xop2 = build_modify_expr (tempvar, op2);
- register tree result = fold (build (COND_EXPR, result_type,
- ifexp, xop1, xop2));
-
- layout_decl (tempvar, TYPE_ALIGN (result_type));
- /* No way to handle variable-sized objects here.
- I fear that the entire handling of BLKmode conditional exprs
- needs to be redone. */
- if (TREE_CODE (DECL_SIZE (tempvar)) != INTEGER_CST)
- abort ();
- DECL_RTL (tempvar)
- = assign_stack_local (DECL_MODE (tempvar),
- (TREE_INT_CST_LOW (DECL_SIZE (tempvar))
- + BITS_PER_UNIT - 1)
- / BITS_PER_UNIT,
- 0);
-
- TREE_SIDE_EFFECTS (result)
- = TREE_SIDE_EFFECTS (ifexp) | TREE_SIDE_EFFECTS (op1)
- | TREE_SIDE_EFFECTS (op2);
- return build (COMPOUND_EXPR, result_type, result, tempvar);
- }
- }
-#endif /* 0 */
-
- if (TREE_CODE (ifexp) == INTEGER_CST)
- return integer_zerop (ifexp) ? op2 : op1;
-
- return fold (build (COND_EXPR, result_type, ifexp, op1, op2));
-}
-
-/* Given a list of expressions, return a compound expression
- that performs them all and returns the value of the last of them. */
-
-tree
-build_compound_expr (list)
- tree list;
-{
- return internal_build_compound_expr (list, TRUE);
-}
-
-static tree
-internal_build_compound_expr (list, first_p)
- tree list;
- int first_p;
-{
- register tree rest;
-
- if (TREE_CHAIN (list) == 0)
- {
-#if 0 /* If something inside inhibited lvalueness, we should not override. */
- /* Consider (x, y+0), which is not an lvalue since y+0 is not. */
-
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- if (TREE_CODE (list) == NON_LVALUE_EXPR)
- list = TREE_OPERAND (list, 0);
-#endif
-
- /* Don't let (0, 0) be null pointer constant. */
- if (!first_p && integer_zerop (TREE_VALUE (list)))
- return non_lvalue (TREE_VALUE (list));
- return TREE_VALUE (list);
- }
-
- if (TREE_CHAIN (list) != 0 && TREE_CHAIN (TREE_CHAIN (list)) == 0)
- {
- /* Convert arrays to pointers when there really is a comma operator. */
- if (TREE_CODE (TREE_TYPE (TREE_VALUE (TREE_CHAIN (list)))) == ARRAY_TYPE)
- TREE_VALUE (TREE_CHAIN (list))
- = default_conversion (TREE_VALUE (TREE_CHAIN (list)));
- }
-
- rest = internal_build_compound_expr (TREE_CHAIN (list), FALSE);
-
- /* When pedantic, a compound expression can be neither an lvalue
- nor an integer constant expression. */
- if (! TREE_SIDE_EFFECTS (TREE_VALUE (list)) && ! pedantic)
- return rest;
-
- return build (COMPOUND_EXPR, TREE_TYPE (rest), TREE_VALUE (list), rest);
-}
-
-/* Build an expression representing a cast to type TYPE of expression EXPR. */
-
-tree
-build_c_cast (type, expr)
- register tree type;
- tree expr;
-{
- register tree value = expr;
-
- if (type == error_mark_node || expr == error_mark_node)
- return error_mark_node;
- type = TYPE_MAIN_VARIANT (type);
-
-#if 0
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- if (TREE_CODE (value) == NON_LVALUE_EXPR)
- value = TREE_OPERAND (value, 0);
-#endif
-
- if (TREE_CODE (type) == ARRAY_TYPE)
- {
- error ("cast specifies array type");
- return error_mark_node;
- }
-
- if (TREE_CODE (type) == FUNCTION_TYPE)
- {
- error ("cast specifies function type");
- return error_mark_node;
- }
-
- if (type == TREE_TYPE (value))
- {
- if (pedantic)
- {
- if (TREE_CODE (type) == RECORD_TYPE
- || TREE_CODE (type) == UNION_TYPE)
- pedwarn ("ANSI C forbids casting nonscalar to the same type");
- }
- }
- else if (TREE_CODE (type) == UNION_TYPE)
- {
- tree field;
- for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
- if (comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)),
- TYPE_MAIN_VARIANT (TREE_TYPE (value))))
- break;
-
- if (field)
- {
- char *name;
- tree nvalue;
-
- if (pedantic)
- pedwarn ("ANSI C forbids casts to union type");
- if (TYPE_NAME (type) != 0)
- {
- if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
- name = IDENTIFIER_POINTER (TYPE_NAME (type));
- else
- name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
- }
- else
- name = "";
- return digest_init (type, build_nt (CONSTRUCTOR, NULL_TREE,
- build_tree_list (field, value)),
- NULL_PTR, 0, 0, name);
- }
- error ("cast to union type from type not present in union");
- return error_mark_node;
- }
- else
- {
- tree otype;
-
- /* If casting to void, avoid the error that would come
- from default_conversion in the case of a non-lvalue array. */
- if (type == void_type_node)
- return build1 (CONVERT_EXPR, type, value);
-
- /* Convert functions and arrays to pointers,
- but don't convert any other types. */
- if (TREE_CODE (TREE_TYPE (value)) == FUNCTION_TYPE
- || TREE_CODE (TREE_TYPE (value)) == ARRAY_TYPE)
- value = default_conversion (value);
- otype = TREE_TYPE (value);
-
- /* Optionally warn about potentially worrisome casts. */
-
- if (warn_cast_qual
- && TREE_CODE (type) == POINTER_TYPE
- && TREE_CODE (otype) == POINTER_TYPE)
- {
- if (TYPE_VOLATILE (TREE_TYPE (otype))
- && ! TYPE_VOLATILE (TREE_TYPE (type)))
- pedwarn ("cast discards `volatile' from pointer target type");
- if (TYPE_READONLY (TREE_TYPE (otype))
- && ! TYPE_READONLY (TREE_TYPE (type)))
- pedwarn ("cast discards `const' from pointer target type");
- }
-
- /* Warn about possible alignment problems. */
- if (STRICT_ALIGNMENT && warn_cast_align
- && TREE_CODE (type) == POINTER_TYPE
- && TREE_CODE (otype) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (otype)) != VOID_TYPE
- && TREE_CODE (TREE_TYPE (otype)) != FUNCTION_TYPE
- && TYPE_ALIGN (TREE_TYPE (type)) > TYPE_ALIGN (TREE_TYPE (otype)))
- warning ("cast increases required alignment of target type");
-
- if (TREE_CODE (type) == INTEGER_TYPE
- && TREE_CODE (otype) == POINTER_TYPE
- && TYPE_PRECISION (type) != TYPE_PRECISION (otype)
- && !TREE_CONSTANT (value))
- warning ("cast from pointer to integer of different size");
-
- if (TREE_CODE (type) == POINTER_TYPE
- && TREE_CODE (otype) == INTEGER_TYPE
- && TYPE_PRECISION (type) != TYPE_PRECISION (otype)
-#if 0
- /* Don't warn about converting 0 to pointer,
- provided the 0 was explicit--not cast or made by folding. */
- && !(TREE_CODE (value) == INTEGER_CST && integer_zerop (value))
-#endif
- /* Don't warn about converting any constant. */
- && !TREE_CONSTANT (value))
- warning ("cast to pointer from integer of different size");
-
- value = convert (type, value);
-
- /* Ignore any integer overflow caused by the cast. */
- if (TREE_CODE (value) == INTEGER_CST)
- TREE_CONSTANT_OVERFLOW (value) = 0;
- }
-
- if (value == expr && pedantic)
- {
- /* If pedantic, don't let a cast be an lvalue. */
- return non_lvalue (value);
- }
- return value;
-}
-
-/* Build an assignment expression of lvalue LHS from value RHS.
- MODIFYCODE is the code for a binary operator that we use
- to combine the old value of LHS with RHS to get the new value.
- Or else MODIFYCODE is NOP_EXPR meaning do a simple assignment. */
-
-tree
-build_modify_expr (lhs, modifycode, rhs)
- tree lhs, rhs;
- enum tree_code modifycode;
-{
- register tree result;
- tree newrhs;
- tree lhstype = TREE_TYPE (lhs);
- tree olhstype = lhstype;
-
- /* Types that aren't fully specified cannot be used in assignments. */
- lhs = require_complete_type (lhs);
-
- /* Avoid duplicate error messages from operands that had errors. */
- if (TREE_CODE (lhs) == ERROR_MARK || TREE_CODE (rhs) == ERROR_MARK)
- return error_mark_node;
-
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- /* Do not use STRIP_NOPS here. We do not want an enumerator
- whose value is 0 to count as a null pointer constant. */
- if (TREE_CODE (rhs) == NON_LVALUE_EXPR)
- rhs = TREE_OPERAND (rhs, 0);
-
- newrhs = rhs;
-
- /* Handle control structure constructs used as "lvalues". */
-
- switch (TREE_CODE (lhs))
- {
- /* Handle (a, b) used as an "lvalue". */
- case COMPOUND_EXPR:
- pedantic_lvalue_warning (COMPOUND_EXPR);
- return build (COMPOUND_EXPR, lhstype,
- TREE_OPERAND (lhs, 0),
- build_modify_expr (TREE_OPERAND (lhs, 1),
- modifycode, rhs));
-
- /* Handle (a ? b : c) used as an "lvalue". */
- case COND_EXPR:
- pedantic_lvalue_warning (COND_EXPR);
- rhs = save_expr (rhs);
- {
- /* Produce (a ? (b = rhs) : (c = rhs))
- except that the RHS goes through a save-expr
- so the code to compute it is only emitted once. */
- tree cond
- = build_conditional_expr (TREE_OPERAND (lhs, 0),
- build_modify_expr (TREE_OPERAND (lhs, 1),
- modifycode, rhs),
- build_modify_expr (TREE_OPERAND (lhs, 2),
- modifycode, rhs));
- /* Make sure the code to compute the rhs comes out
- before the split. */
- return build (COMPOUND_EXPR, TREE_TYPE (lhs),
- /* But cast it to void to avoid an "unused" error. */
- convert (void_type_node, rhs), cond);
- }
- }
-
- /* If a binary op has been requested, combine the old LHS value with the RHS
- producing the value we should actually store into the LHS. */
-
- if (modifycode != NOP_EXPR)
- {
- lhs = stabilize_reference (lhs);
- newrhs = build_binary_op (modifycode, lhs, rhs, 1);
- }
-
- /* Handle a cast used as an "lvalue".
- We have already performed any binary operator using the value as cast.
- Now convert the result to the cast type of the lhs,
- and then true type of the lhs and store it there;
- then convert result back to the cast type to be the value
- of the assignment. */
-
- switch (TREE_CODE (lhs))
- {
- case NOP_EXPR:
- case CONVERT_EXPR:
- case FLOAT_EXPR:
- case FIX_TRUNC_EXPR:
- case FIX_FLOOR_EXPR:
- case FIX_ROUND_EXPR:
- case FIX_CEIL_EXPR:
- if (TREE_CODE (TREE_TYPE (newrhs)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE (newrhs)) == FUNCTION_TYPE)
- newrhs = default_conversion (newrhs);
- {
- tree inner_lhs = TREE_OPERAND (lhs, 0);
- tree result;
- result = build_modify_expr (inner_lhs, NOP_EXPR,
- convert (TREE_TYPE (inner_lhs),
- convert (lhstype, newrhs)));
- pedantic_lvalue_warning (CONVERT_EXPR);
- return convert (TREE_TYPE (lhs), result);
- }
- }
-
- /* Now we have handled acceptable kinds of LHS that are not truly lvalues.
- Reject anything strange now. */
-
- if (!lvalue_or_else (lhs, "assignment"))
- return error_mark_node;
-
- /* Warn about storing in something that is `const'. */
-
- if (TREE_READONLY (lhs) || TYPE_READONLY (lhstype)
- || ((TREE_CODE (lhstype) == RECORD_TYPE
- || TREE_CODE (lhstype) == UNION_TYPE)
- && C_TYPE_FIELDS_READONLY (lhstype)))
- readonly_warning (lhs, "assignment");
-
- /* If storing into a structure or union member,
- it has probably been given type `int'.
- Compute the type that would go with
- the actual amount of storage the member occupies. */
-
- if (TREE_CODE (lhs) == COMPONENT_REF
- && (TREE_CODE (lhstype) == INTEGER_TYPE
- || TREE_CODE (lhstype) == REAL_TYPE
- || TREE_CODE (lhstype) == ENUMERAL_TYPE))
- lhstype = TREE_TYPE (get_unwidened (lhs, 0));
-
- /* If storing in a field that is in actuality a short or narrower than one,
- we must store in the field in its actual type. */
-
- if (lhstype != TREE_TYPE (lhs))
- {
- lhs = copy_node (lhs);
- TREE_TYPE (lhs) = lhstype;
- }
-
- /* Convert new value to destination type. */
-
- newrhs = convert_for_assignment (lhstype, newrhs, "assignment",
- NULL_TREE, NULL_TREE, 0);
- if (TREE_CODE (newrhs) == ERROR_MARK)
- return error_mark_node;
-
- result = build (MODIFY_EXPR, lhstype, lhs, newrhs);
- TREE_SIDE_EFFECTS (result) = 1;
-
- /* If we got the LHS in a different type for storing in,
- convert the result back to the nominal type of LHS
- so that the value we return always has the same type
- as the LHS argument. */
-
- if (olhstype == TREE_TYPE (result))
- return result;
- return convert_for_assignment (olhstype, result, "assignment",
- NULL_TREE, NULL_TREE, 0);
-}
-
-/* Convert value RHS to type TYPE as preparation for an assignment
- to an lvalue of type TYPE.
- The real work of conversion is done by `convert'.
- The purpose of this function is to generate error messages
- for assignments that are not allowed in C.
- ERRTYPE is a string to use in error messages:
- "assignment", "return", etc. If it is null, this is parameter passing
- for a function call (and different error messages are output). Otherwise,
- it may be a name stored in the spelling stack and interpreted by
- get_spelling.
-
- FUNNAME is the name of the function being called,
- as an IDENTIFIER_NODE, or null.
- PARMNUM is the number of the argument, for printing in error messages. */
-
-static tree
-convert_for_assignment (type, rhs, errtype, fundecl, funname, parmnum)
- tree type, rhs;
- char *errtype;
- tree fundecl, funname;
- int parmnum;
-{
- register enum tree_code codel = TREE_CODE (type);
- register tree rhstype;
- register enum tree_code coder;
-
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- /* Do not use STRIP_NOPS here. We do not want an enumerator
- whose value is 0 to count as a null pointer constant. */
- if (TREE_CODE (rhs) == NON_LVALUE_EXPR)
- rhs = TREE_OPERAND (rhs, 0);
-
- if (TREE_CODE (TREE_TYPE (rhs)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE (rhs)) == FUNCTION_TYPE)
- rhs = default_conversion (rhs);
-
- rhstype = TREE_TYPE (rhs);
- coder = TREE_CODE (rhstype);
-
- if (coder == ERROR_MARK)
- return error_mark_node;
-
- if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (rhstype))
- {
- overflow_warning (rhs);
- /* Check for Objective-C protocols. This will issue a warning if
- there are protocol violations. No need to use the return value. */
- maybe_objc_comptypes (type, rhstype, 0);
- return rhs;
- }
-
- if (coder == VOID_TYPE)
- {
- error ("void value not ignored as it ought to be");
- return error_mark_node;
- }
- /* Arithmetic types all interconvert, and enum is treated like int. */
- if ((codel == INTEGER_TYPE || codel == REAL_TYPE || codel == ENUMERAL_TYPE
- || codel == COMPLEX_TYPE)
- &&
- (coder == INTEGER_TYPE || coder == REAL_TYPE || coder == ENUMERAL_TYPE
- || codel == COMPLEX_TYPE))
- /* Don't use convert_and_check here. If the input has type int
- and did not overflow, and we are converting it here to a short,
- we don't want an error. A warning would be okay, but it's too risky now
- to add an option to convert_and_check to get just warnings. */
- return convert (type, rhs);
- /* Conversion to a union from its member types. */
- else if (codel == UNION_TYPE)
- {
- tree memb_types;
- for (memb_types = TYPE_FIELDS (type); memb_types;
- memb_types = TREE_CHAIN (memb_types))
- {
- if (comptypes (TREE_TYPE (memb_types), TREE_TYPE (rhs)))
- {
- if (pedantic
- && !(fundecl != 0 && DECL_IN_SYSTEM_HEADER (fundecl)))
- pedwarn ("ANSI C prohibits argument conversion to union type");
- return build1 (NOP_EXPR, type, rhs);
- }
- else if (coder == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (memb_types)) == POINTER_TYPE)
- {
- tree memb_type = TREE_TYPE (memb_types);
- register tree ttl = TREE_TYPE (memb_type);
- register tree ttr = TREE_TYPE (rhstype);
-
- /* Any non-function converts to a [const][volatile] void *
- and vice versa; otherwise, targets must be the same.
- Meanwhile, the lhs target must have all the qualifiers of the rhs. */
- if (TYPE_MAIN_VARIANT (ttl) == void_type_node
- || TYPE_MAIN_VARIANT (ttr) == void_type_node
- || comp_target_types (memb_type, rhstype))
- {
- /* Const and volatile mean something different for function types,
- so the usual warnings are not appropriate. */
- if (TREE_CODE (ttr) != FUNCTION_TYPE
- || TREE_CODE (ttl) != FUNCTION_TYPE)
- {
- if (! TYPE_READONLY (ttl) && TYPE_READONLY (ttr))
- warn_for_assignment ("%s discards `const' from pointer target type",
- get_spelling (errtype), funname, parmnum);
- if (! TYPE_VOLATILE (ttl) && TYPE_VOLATILE (ttr))
- warn_for_assignment ("%s discards `volatile' from pointer target type",
- get_spelling (errtype), funname, parmnum);
- }
- else
- {
- /* Because const and volatile on functions are restrictions
- that say the function will not do certain things,
- it is okay to use a const or volatile function
- where an ordinary one is wanted, but not vice-versa. */
- if (TYPE_READONLY (ttl) && ! TYPE_READONLY (ttr))
- warn_for_assignment ("%s makes `const *' function pointer from non-const",
- get_spelling (errtype), funname, parmnum);
- if (TYPE_VOLATILE (ttl) && ! TYPE_VOLATILE (ttr))
- warn_for_assignment ("%s makes `volatile *' function pointer from non-volatile",
- get_spelling (errtype), funname, parmnum);
- }
- if (pedantic
- && !(fundecl != 0 && DECL_IN_SYSTEM_HEADER (fundecl)))
- pedwarn ("ANSI C prohibits argument conversion to union type");
- return build1 (NOP_EXPR, type, rhs);
- }
- }
- }
- }
- /* Conversions among pointers */
- else if (codel == POINTER_TYPE && coder == POINTER_TYPE)
- {
- register tree ttl = TREE_TYPE (type);
- register tree ttr = TREE_TYPE (rhstype);
-
- /* Any non-function converts to a [const][volatile] void *
- and vice versa; otherwise, targets must be the same.
- Meanwhile, the lhs target must have all the qualifiers of the rhs. */
- if (TYPE_MAIN_VARIANT (ttl) == void_type_node
- || TYPE_MAIN_VARIANT (ttr) == void_type_node
- || comp_target_types (type, rhstype))
- {
- if (pedantic
- && ((TYPE_MAIN_VARIANT (ttl) == void_type_node
- && TREE_CODE (ttr) == FUNCTION_TYPE)
- ||
- (TYPE_MAIN_VARIANT (ttr) == void_type_node
- && !integer_zerop (rhs)
- && TREE_CODE (ttl) == FUNCTION_TYPE)))
- warn_for_assignment ("ANSI forbids %s between function pointer and `void *'",
- get_spelling (errtype), funname, parmnum);
- /* Const and volatile mean something different for function types,
- so the usual warnings are not appropriate. */
- else if (TREE_CODE (ttr) != FUNCTION_TYPE
- || TREE_CODE (ttl) != FUNCTION_TYPE)
- {
- if (! TYPE_READONLY (ttl) && TYPE_READONLY (ttr))
- warn_for_assignment ("%s discards `const' from pointer target type",
- get_spelling (errtype), funname, parmnum);
- if (! TYPE_VOLATILE (ttl) && TYPE_VOLATILE (ttr))
- warn_for_assignment ("%s discards `volatile' from pointer target type",
- get_spelling (errtype), funname, parmnum);
- }
- else
- {
- /* Because const and volatile on functions are restrictions
- that say the function will not do certain things,
- it is okay to use a const or volatile function
- where an ordinary one is wanted, but not vice-versa. */
- if (TYPE_READONLY (ttl) && ! TYPE_READONLY (ttr))
- warn_for_assignment ("%s makes `const *' function pointer from non-const",
- get_spelling (errtype), funname, parmnum);
- if (TYPE_VOLATILE (ttl) && ! TYPE_VOLATILE (ttr))
- warn_for_assignment ("%s makes `volatile *' function pointer from non-volatile",
- get_spelling (errtype), funname, parmnum);
- }
- }
- else if (unsigned_type (TYPE_MAIN_VARIANT (ttl))
- == unsigned_type (TYPE_MAIN_VARIANT (ttr)))
- {
- if (pedantic)
- warn_for_assignment ("pointer targets in %s differ in signedness",
- get_spelling (errtype), funname, parmnum);
- }
- else
- warn_for_assignment ("%s from incompatible pointer type",
- get_spelling (errtype), funname, parmnum);
- return convert (type, rhs);
- }
- else if (codel == POINTER_TYPE && coder == INTEGER_TYPE)
- {
- /* An explicit constant 0 can convert to a pointer,
- but not a 0 that results from casting or folding. */
- if (! (TREE_CODE (rhs) == INTEGER_CST && integer_zerop (rhs)))
- {
- warn_for_assignment ("%s makes pointer from integer without a cast",
- get_spelling (errtype), funname, parmnum);
- return convert (type, rhs);
- }
- return null_pointer_node;
- }
- else if (codel == INTEGER_TYPE && coder == POINTER_TYPE)
- {
- warn_for_assignment ("%s makes integer from pointer without a cast",
- get_spelling (errtype), funname, parmnum);
- return convert (type, rhs);
- }
-
- if (!errtype)
- {
- if (funname)
- {
- tree selector = maybe_building_objc_message_expr ();
-
- if (selector && parmnum > 2)
- error ("incompatible type for argument %d of `%s'",
- parmnum - 2, IDENTIFIER_POINTER (selector));
- else
- error ("incompatible type for argument %d of `%s'",
- parmnum, IDENTIFIER_POINTER (funname));
- }
- else
- error ("incompatible type for argument %d of indirect function call",
- parmnum);
- }
- else
- error ("incompatible types in %s", get_spelling (errtype));
-
- return error_mark_node;
-}
-
-/* Print a warning using MSG.
- It gets OPNAME as its one parameter.
- If OPNAME is null, it is replaced by "passing arg ARGNUM of `FUNCTION'".
- FUNCTION and ARGNUM are handled specially if we are building an
- Objective-C selector. */
-
-static void
-warn_for_assignment (msg, opname, function, argnum)
- char *msg;
- char *opname;
- tree function;
- int argnum;
-{
- static char argstring[] = "passing arg %d of `%s'";
- static char argnofun[] = "passing arg %d";
-
- if (opname == 0)
- {
- tree selector = maybe_building_objc_message_expr ();
-
- if (selector && argnum > 2)
- {
- function = selector;
- argnum -= 2;
- }
- if (function)
- {
- /* Function name is known; supply it. */
- opname = (char *) alloca (IDENTIFIER_LENGTH (function)
- + sizeof (argstring) + 25 /*%d*/ + 1);
- sprintf (opname, argstring, argnum, IDENTIFIER_POINTER (function));
- }
- else
- {
- /* Function name unknown (call through ptr); just give arg number. */
- opname = (char *) alloca (sizeof (argnofun) + 25 /*%d*/ + 1);
- sprintf (opname, argnofun, argnum);
- }
- }
- pedwarn (msg, opname);
-}
-
-/* Return nonzero if VALUE is a valid constant-valued expression
- for use in initializing a static variable; one that can be an
- element of a "constant" initializer.
-
- Return null_pointer_node if the value is absolute;
- if it is relocatable, return the variable that determines the relocation.
- We assume that VALUE has been folded as much as possible;
- therefore, we do not need to check for such things as
- arithmetic-combinations of integers. */
-
-static tree
-initializer_constant_valid_p (value, endtype)
- tree value;
- tree endtype;
-{
- switch (TREE_CODE (value))
- {
- case CONSTRUCTOR:
- return TREE_STATIC (value) ? null_pointer_node : 0;
-
- case INTEGER_CST:
- case REAL_CST:
- case STRING_CST:
- case COMPLEX_CST:
- return null_pointer_node;
-
- case ADDR_EXPR:
- return TREE_OPERAND (value, 0);
-
- case NON_LVALUE_EXPR:
- return initializer_constant_valid_p (TREE_OPERAND (value, 0), endtype);
-
- case CONVERT_EXPR:
- case NOP_EXPR:
- /* Allow conversions between pointer types. */
- if (TREE_CODE (TREE_TYPE (value)) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (value, 0))) == POINTER_TYPE)
- return initializer_constant_valid_p (TREE_OPERAND (value, 0), endtype);
- /* Allow conversions between real types. */
- if (TREE_CODE (TREE_TYPE (value)) == REAL_TYPE
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (value, 0))) == REAL_TYPE)
- return initializer_constant_valid_p (TREE_OPERAND (value, 0), endtype);
- /* Allow length-preserving conversions between integer types. */
- if (TREE_CODE (TREE_TYPE (value)) == INTEGER_TYPE
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (value, 0))) == INTEGER_TYPE
- && tree_int_cst_equal (TYPE_SIZE (TREE_TYPE (value)),
- TYPE_SIZE (TREE_TYPE (TREE_OPERAND (value, 0)))))
- return initializer_constant_valid_p (TREE_OPERAND (value, 0), endtype);
- /* Allow conversions between integer types only if explicit value. */
- if (TREE_CODE (TREE_TYPE (value)) == INTEGER_TYPE
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (value, 0))) == INTEGER_TYPE)
- {
- tree inner = initializer_constant_valid_p (TREE_OPERAND (value, 0),
- endtype);
- if (inner == null_pointer_node)
- return null_pointer_node;
- return 0;
- }
- /* Allow (int) &foo provided int is as wide as a pointer. */
- if (TREE_CODE (TREE_TYPE (value)) == INTEGER_TYPE
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (value, 0))) == POINTER_TYPE
- && ! tree_int_cst_lt (TYPE_SIZE (TREE_TYPE (value)),
- TYPE_SIZE (TREE_TYPE (TREE_OPERAND (value, 0)))))
- return initializer_constant_valid_p (TREE_OPERAND (value, 0),
- endtype);
- /* Allow conversions to union types if the value inside is okay. */
- if (TREE_CODE (TREE_TYPE (value)) == UNION_TYPE)
- return initializer_constant_valid_p (TREE_OPERAND (value, 0),
- endtype);
- return 0;
-
- case PLUS_EXPR:
- if (TREE_CODE (endtype) == INTEGER_TYPE
- && TYPE_PRECISION (endtype) < POINTER_SIZE)
- return 0;
- {
- tree valid0 = initializer_constant_valid_p (TREE_OPERAND (value, 0),
- endtype);
- tree valid1 = initializer_constant_valid_p (TREE_OPERAND (value, 1),
- endtype);
- /* If either term is absolute, use the other terms relocation. */
- if (valid0 == null_pointer_node)
- return valid1;
- if (valid1 == null_pointer_node)
- return valid0;
- return 0;
- }
-
- case MINUS_EXPR:
- if (TREE_CODE (endtype) == INTEGER_TYPE
- && TYPE_PRECISION (endtype) < POINTER_SIZE)
- return 0;
- {
- tree valid0 = initializer_constant_valid_p (TREE_OPERAND (value, 0),
- endtype);
- tree valid1 = initializer_constant_valid_p (TREE_OPERAND (value, 1),
- endtype);
- /* Win if second argument is absolute. */
- if (valid1 == null_pointer_node)
- return valid0;
- /* Win if both arguments have the same relocation.
- Then the value is absolute. */
- if (valid0 == valid1)
- return null_pointer_node;
- return 0;
- }
- }
-
- return 0;
-}
-
-/* Perform appropriate conversions on the initial value of a variable,
- store it in the declaration DECL,
- and print any error messages that are appropriate.
- If the init is invalid, store an ERROR_MARK. */
-
-void
-store_init_value (decl, init)
- tree decl, init;
-{
- register tree value, type;
-
- /* If variable's type was invalidly declared, just ignore it. */
-
- type = TREE_TYPE (decl);
- if (TREE_CODE (type) == ERROR_MARK)
- return;
-
- /* Digest the specified initializer into an expression. */
-
- value = digest_init (type, init, NULL_PTR, TREE_STATIC (decl),
- TREE_STATIC (decl) || pedantic,
- IDENTIFIER_POINTER (DECL_NAME (decl)));
-
- /* Store the expression if valid; else report error. */
-
-#if 0
- /* Note that this is the only place we can detect the error
- in a case such as struct foo bar = (struct foo) { x, y };
- where there is one initial value which is a constructor expression. */
- if (value == error_mark_node)
- ;
- else if (TREE_STATIC (decl) && ! TREE_CONSTANT (value))
- {
- error ("initializer for static variable is not constant");
- value = error_mark_node;
- }
- else if (TREE_STATIC (decl)
- && initializer_constant_valid_p (value, TREE_TYPE (value)) == 0)
- {
- error ("initializer for static variable uses complicated arithmetic");
- value = error_mark_node;
- }
- else
- {
- if (pedantic && TREE_CODE (value) == CONSTRUCTOR)
- {
- if (! TREE_CONSTANT (value))
- pedwarn ("aggregate initializer is not constant");
- else if (! TREE_STATIC (value))
- pedwarn ("aggregate initializer uses complicated arithmetic");
- }
- }
-#endif
-
- /* ANSI wants warnings about out-of-range constant initializers. */
- constant_expression_warning (value);
-
- DECL_INITIAL (decl) = value;
-}
-
-/* Methods for storing and printing names for error messages. */
-
-/* Implement a spelling stack that allows components of a name to be pushed
- and popped. Each element on the stack is this structure. */
-
-struct spelling
-{
- int kind;
- union
- {
- int i;
- char *s;
- } u;
-};
-
-#define SPELLING_STRING 1
-#define SPELLING_MEMBER 2
-#define SPELLING_BOUNDS 3
-
-static struct spelling *spelling; /* Next stack element (unused). */
-static struct spelling *spelling_base; /* Spelling stack base. */
-static int spelling_size; /* Size of the spelling stack. */
-
-/* Macros to save and restore the spelling stack around push_... functions.
- Alternative to SAVE_SPELLING_STACK. */
-
-#define SPELLING_DEPTH() (spelling - spelling_base)
-#define RESTORE_SPELLING_DEPTH(depth) (spelling = spelling_base + depth)
-
-/* Save and restore the spelling stack around arbitrary C code. */
-
-#define SAVE_SPELLING_DEPTH(code) \
-{ \
- int __depth = SPELLING_DEPTH (); \
- code; \
- RESTORE_SPELLING_DEPTH (__depth); \
-}
-
-/* Push an element on the spelling stack with type KIND and assign VALUE
- to MEMBER. */
-
-#define PUSH_SPELLING(KIND, VALUE, MEMBER) \
-{ \
- int depth = SPELLING_DEPTH (); \
- \
- if (depth >= spelling_size) \
- { \
- spelling_size += 10; \
- if (spelling_base == 0) \
- spelling_base \
- = (struct spelling *) xmalloc (spelling_size * sizeof (struct spelling)); \
- else \
- spelling_base \
- = (struct spelling *) xrealloc (spelling_base, \
- spelling_size * sizeof (struct spelling)); \
- RESTORE_SPELLING_DEPTH (depth); \
- } \
- \
- spelling->kind = (KIND); \
- spelling->MEMBER = (VALUE); \
- spelling++; \
-}
-
-/* Push STRING on the stack. Printed literally. */
-
-static void
-push_string (string)
- char *string;
-{
- PUSH_SPELLING (SPELLING_STRING, string, u.s);
-}
-
-/* Push a member name on the stack. Printed as '.' STRING. */
-
-static void
-push_member_name (string)
- char *string;
-{
- PUSH_SPELLING (SPELLING_MEMBER, string, u.s);
-}
-
-/* Push an array bounds on the stack. Printed as [BOUNDS]. */
-
-static void
-push_array_bounds (bounds)
- int bounds;
-{
- PUSH_SPELLING (SPELLING_BOUNDS, bounds, u.i);
-}
-
-/* Compute the maximum size in bytes of the printed spelling. */
-
-static int
-spelling_length ()
-{
- register int size = 0;
- register struct spelling *p;
-
- for (p = spelling_base; p < spelling; p++)
- {
- if (p->kind == SPELLING_BOUNDS)
- size += 25;
- else
- size += strlen (p->u.s) + 1;
- }
-
- return size;
-}
-
-/* Print the spelling to BUFFER and return it. */
-
-static char *
-print_spelling (buffer)
- register char *buffer;
-{
- register char *d = buffer;
- register char *s;
- register struct spelling *p;
-
- for (p = spelling_base; p < spelling; p++)
- if (p->kind == SPELLING_BOUNDS)
- {
- sprintf (d, "[%d]", p->u.i);
- d += strlen (d);
- }
- else
- {
- if (p->kind == SPELLING_MEMBER)
- *d++ = '.';
- for (s = p->u.s; *d = *s++; d++)
- ;
- }
- *d++ = '\0';
- return buffer;
-}
-
-/* Provide a means to pass component names derived from the spelling stack. */
-
-char initialization_message;
-
-/* Interpret the spelling of the given ERRTYPE message. */
-
-static char *
-get_spelling (errtype)
- char *errtype;
-{
- static char *buffer;
- static int size = -1;
-
- if (errtype == &initialization_message)
- {
- /* Avoid counting chars */
- static char message[] = "initialization of `%s'";
- register int needed = sizeof (message) + spelling_length () + 1;
- char *temp;
-
- if (size < 0)
- buffer = (char *) xmalloc (size = needed);
- if (needed > size)
- buffer = (char *) xrealloc (buffer, size = needed);
-
- temp = (char *) alloca (needed);
- sprintf (buffer, message, print_spelling (temp));
- return buffer;
- }
-
- return errtype;
-}
-
-/* Issue an error message for a bad initializer component.
- FORMAT describes the message. OFWHAT is the name for the component.
- LOCAL is a format string for formatting the insertion of the name
- into the message.
-
- If OFWHAT is null, the component name is stored on the spelling stack.
- If the component name is a null string, then LOCAL is omitted entirely. */
-
-void
-error_init (format, local, ofwhat)
- char *format, *local, *ofwhat;
-{
- char *buffer;
-
- if (ofwhat == 0)
- ofwhat = print_spelling ((char *) alloca (spelling_length () + 1));
- buffer = (char *) alloca (strlen (local) + strlen (ofwhat) + 2);
-
- if (*ofwhat)
- sprintf (buffer, local, ofwhat);
- else
- buffer[0] = 0;
-
- error (format, buffer);
-}
-
-/* Issue a pedantic warning for a bad initializer component.
- FORMAT describes the message. OFWHAT is the name for the component.
- LOCAL is a format string for formatting the insertion of the name
- into the message.
-
- If OFWHAT is null, the component name is stored on the spelling stack.
- If the component name is a null string, then LOCAL is omitted entirely. */
-
-void
-pedwarn_init (format, local, ofwhat)
- char *format, *local, *ofwhat;
-{
- char *buffer;
-
- if (ofwhat == 0)
- ofwhat = print_spelling ((char *) alloca (spelling_length () + 1));
- buffer = (char *) alloca (strlen (local) + strlen (ofwhat) + 2);
-
- if (*ofwhat)
- sprintf (buffer, local, ofwhat);
- else
- buffer[0] = 0;
-
- pedwarn (format, buffer);
-}
-
-/* Keep a pointer to the last free TREE_LIST node as we digest an initializer,
- so that we can reuse it. This is set in digest_init, and used in
- process_init_constructor.
-
- We will never keep more than one free TREE_LIST node here. This is for
- two main reasons. First, we take elements off the old list and add them
- to the new list one at a time, thus there should never be more than
- one free TREE_LIST at a time, and thus even if there is, we will never
- need more than one. Secondly, to avoid dangling pointers to freed obstacks,
- we want to always ensure that we have either a pointer to a valid TREE_LIST
- within the current initializer, or else a pointer to null. */
-
-static tree free_tree_list = NULL_TREE;
-
-/* Digest the parser output INIT as an initializer for type TYPE.
- Return a C expression of type TYPE to represent the initial value.
-
- If TAIL is nonzero, it points to a variable holding a list of elements
- of which INIT is the first. We update the list stored there by
- removing from the head all the elements that we use.
- Normally this is only one; we use more than one element only if
- TYPE is an aggregate and INIT is not a constructor.
-
- The arguments REQUIRE_CONSTANT and CONSTRUCTOR_CONSTANT request errors
- if non-constant initializers or elements are seen. CONSTRUCTOR_CONSTANT
- applies only to elements of constructors.
-
- If OFWHAT is nonnull, it specifies what we are initializing, for error
- messages. Examples: variable name, variable.member, array[44].
- If OFWHAT is null, the component name is stored on the spelling stack.
- (That is true for all nested calls to digest_init.) */
-
-tree
-digest_init (type, init, tail, require_constant, constructor_constant, ofwhat)
- tree type, init, *tail;
- int require_constant, constructor_constant;
- char *ofwhat;
-{
- enum tree_code code = TREE_CODE (type);
- tree element = 0;
- tree old_tail_contents;
- /* Nonzero if INIT is a braced grouping, which comes in as a CONSTRUCTOR
- tree node which has no TREE_TYPE. */
- int raw_constructor
- = TREE_CODE (init) == CONSTRUCTOR && TREE_TYPE (init) == 0;
- tree inside_init = init;
-
- /* Make sure there is just one "partially bracketed" message
- per top-level initializer or constructor. */
- if (ofwhat != 0)
- partial_bracket_mentioned = 0;
-
- /* By default, assume we use one element from a list.
- We correct this later in the cases where it is not true.
-
- Thus, we update TAIL now to point to the next element, and save the
- old value in OLD_TAIL_CONTENTS. If we didn't actually use the first
- element, then we will reset TAIL before proceeding. FREE_TREE_LIST
- is handled similarly. */
-
- if (tail)
- {
- old_tail_contents = *tail;
- *tail = TREE_CHAIN (*tail);
- free_tree_list = old_tail_contents;
- }
- else
- free_tree_list = 0;
-
- if (init == error_mark_node)
- return init;
-
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- /* Do not use STRIP_NOPS here. We do not want an enumerator
- whose value is 0 to count as a null pointer constant. */
- if (TREE_CODE (init) == NON_LVALUE_EXPR)
- inside_init = TREE_OPERAND (init, 0);
-
- if (inside_init && raw_constructor
- && CONSTRUCTOR_ELTS (inside_init) != 0
- && TREE_CHAIN (CONSTRUCTOR_ELTS (inside_init)) == 0)
- {
- element = TREE_VALUE (CONSTRUCTOR_ELTS (inside_init));
- /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */
- if (element && TREE_CODE (element) == NON_LVALUE_EXPR)
- element = TREE_OPERAND (element, 0);
- }
-
- /* Initialization of an array of chars from a string constant
- optionally enclosed in braces. */
-
- if (code == ARRAY_TYPE)
- {
- tree typ1 = TYPE_MAIN_VARIANT (TREE_TYPE (type));
- if ((typ1 == char_type_node
- || typ1 == signed_char_type_node
- || typ1 == unsigned_char_type_node
- || typ1 == unsigned_wchar_type_node
- || typ1 == signed_wchar_type_node)
- && ((inside_init && TREE_CODE (inside_init) == STRING_CST)
- || (element && TREE_CODE (element) == STRING_CST)))
- {
- tree string = element ? element : inside_init;
-
- if ((TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (string)))
- != char_type_node)
- && TYPE_PRECISION (typ1) == TYPE_PRECISION (char_type_node))
- {
- error_init ("char-array%s initialized from wide string",
- " `%s'", ofwhat);
- return error_mark_node;
- }
- if ((TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (string)))
- == char_type_node)
- && TYPE_PRECISION (typ1) != TYPE_PRECISION (char_type_node))
- {
- error_init ("int-array%s initialized from non-wide string",
- " `%s'", ofwhat);
- return error_mark_node;
- }
-
- TREE_TYPE (string) = type;
- if (TYPE_DOMAIN (type) != 0
- && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST)
- {
- register int size = TREE_INT_CST_LOW (TYPE_SIZE (type));
- size = (size + BITS_PER_UNIT - 1) / BITS_PER_UNIT;
- /* Subtract 1 (or sizeof (wchar_t))
- because it's ok to ignore the terminating null char
- that is counted in the length of the constant. */
- if (size < TREE_STRING_LENGTH (string)
- - (TYPE_PRECISION (typ1) != TYPE_PRECISION (char_type_node)
- ? TYPE_PRECISION (wchar_type_node) / BITS_PER_UNIT
- : 1))
- pedwarn_init (
- "initializer-string for array of chars%s is too long",
- " `%s'", ofwhat);
- }
- return string;
- }
- }
-
- /* Any type except an array can be initialized
- from an expression of the same type, optionally with braces.
- For an array, this is allowed only for a string constant. */
-
- if (inside_init && TREE_TYPE (inside_init) != 0
- && ((TYPE_MAIN_VARIANT (TREE_TYPE (inside_init))
- == TYPE_MAIN_VARIANT (type))
- || (code == ARRAY_TYPE
- && comptypes (TREE_TYPE (inside_init), type))
- || (code == POINTER_TYPE
- && (TREE_CODE (TREE_TYPE (inside_init)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE (inside_init)) == FUNCTION_TYPE)
- && comptypes (TREE_TYPE (TREE_TYPE (inside_init)),
- TREE_TYPE (type)))))
- {
- if (code == POINTER_TYPE
- && (TREE_CODE (TREE_TYPE (inside_init)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE (inside_init)) == FUNCTION_TYPE))
- inside_init = default_conversion (inside_init);
- else if (code == ARRAY_TYPE && TREE_CODE (inside_init) != STRING_CST)
- {
- error_init ("array%s initialized from non-constant array expression",
- " `%s'", ofwhat);
- return error_mark_node;
- }
-
- if (optimize && TREE_READONLY (inside_init)
- && TREE_CODE (inside_init) == VAR_DECL)
- inside_init = decl_constant_value (inside_init);
-
- if (require_constant && ! TREE_CONSTANT (inside_init))
- {
- error_init ("initializer element%s is not constant",
- " for `%s'", ofwhat);
- inside_init = error_mark_node;
- }
- else if (require_constant
- && initializer_constant_valid_p (inside_init, TREE_TYPE (inside_init)) == 0)
- {
- error_init ("initializer element%s is not computable at load time",
- " for `%s'", ofwhat);
- inside_init = error_mark_node;
- }
-
- return inside_init;
- }
-
- if (element && (TREE_TYPE (element) == type
- || (code == ARRAY_TYPE && TREE_TYPE (element)
- && comptypes (TREE_TYPE (element), type))))
- {
- if (code == ARRAY_TYPE)
- {
- error_init ("array%s initialized from non-constant array expression",
- " `%s'", ofwhat);
- return error_mark_node;
- }
- if (pedantic && (code == RECORD_TYPE || code == UNION_TYPE))
- pedwarn ("single-expression nonscalar initializer has braces");
- if (optimize && TREE_READONLY (element) && TREE_CODE (element) == VAR_DECL)
- element = decl_constant_value (element);
-
- if (require_constant && ! TREE_CONSTANT (element))
- {
- error_init ("initializer element%s is not constant",
- " for `%s'", ofwhat);
- element = error_mark_node;
- }
- else if (require_constant
- && initializer_constant_valid_p (element, TREE_TYPE (element)) == 0)
- {
- error_init ("initializer element%s is not computable at load time",
- " for `%s'", ofwhat);
- element = error_mark_node;
- }
-
- return element;
- }
-
- /* Check for initializing a union by its first field.
- Such an initializer must use braces. */
-
- if (code == UNION_TYPE)
- {
- tree result;
- tree field = TYPE_FIELDS (type);
-
- /* Find the first named field. ANSI decided in September 1990
- that only named fields count here. */
- while (field && DECL_NAME (field) == 0)
- field = TREE_CHAIN (field);
-
- if (field == 0)
- {
- error_init ("union%s with no named members cannot be initialized",
- " `%s'", ofwhat);
- return error_mark_node;
- }
-
- if (raw_constructor)
- result = process_init_constructor (type, inside_init, NULL_PTR,
- require_constant,
- constructor_constant, ofwhat);
- else if (tail != 0)
- {
- *tail = old_tail_contents;
- free_tree_list = NULL_TREE;
- result = process_init_constructor (type, NULL_TREE, tail,
- require_constant,
- constructor_constant, ofwhat);
- }
- else
- result = 0;
-
- if (result)
- return result;
- }
-
- /* Handle scalar types, including conversions. */
-
- if (code == INTEGER_TYPE || code == REAL_TYPE || code == POINTER_TYPE
- || code == ENUMERAL_TYPE || code == COMPLEX_TYPE)
- {
- if (raw_constructor)
- {
- if (element == 0)
- {
- error_init (
- "initializer for scalar%s requires one element",
- " `%s'", ofwhat);
- return error_mark_node;
- }
- else
- {
- /* Deal with extra levels of {...}. */
- if (TREE_CODE (element) == CONSTRUCTOR
- && TREE_TYPE (element) == 0)
- {
- error_init (
- "initializer for scalar%s requires one element",
- " `%s'", ofwhat);
- return error_mark_node;
- }
- inside_init = element;
- }
- }
-
-#if 0 /* A non-raw constructor is an actual expression. */
- if (TREE_CODE (inside_init) == CONSTRUCTOR)
- {
- error_init ("initializer for scalar%s has extra braces",
- " `%s'", ofwhat);
- return error_mark_node;
- }
-#endif
-
- SAVE_SPELLING_DEPTH
- ({
- if (ofwhat)
- push_string (ofwhat);
- if (!raw_constructor)
- inside_init = init;
- /* Note that convert_for_assignment calls default_conversion
- for arrays and functions. We must not call it in the
- case where inside_init is a null pointer constant. */
- inside_init
- = convert_for_assignment (type, inside_init,
- &initialization_message,
- NULL_TREE, NULL_TREE, 0);
- });
-
- if (require_constant && ! TREE_CONSTANT (inside_init))
- {
- error_init ("initializer element%s is not constant",
- " for `%s'", ofwhat);
- inside_init = error_mark_node;
- }
- else if (require_constant
- && initializer_constant_valid_p (inside_init, TREE_TYPE (inside_init)) == 0)
- {
- error_init ("initializer element%s is not computable at load time",
- " for `%s'", ofwhat);
- inside_init = error_mark_node;
- }
-
- return inside_init;
- }
-
- /* Come here only for records and arrays. */
-
- if (TYPE_SIZE (type) && TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST)
- {
- error_init ("variable-sized object%s may not be initialized",
- " `%s'", ofwhat);
- return error_mark_node;
- }
-
- if (code == ARRAY_TYPE || code == RECORD_TYPE)
- {
- if (raw_constructor)
- return process_init_constructor (type, inside_init,
- NULL_PTR, constructor_constant,
- constructor_constant, ofwhat);
- else if (tail != 0)
- {
- *tail = old_tail_contents;
- free_tree_list = NULL_TREE;
- return process_init_constructor (type, NULL_TREE, tail,
- constructor_constant,
- constructor_constant, ofwhat);
- }
- else if (flag_traditional)
- /* Traditionally one can say `char x[100] = 0;'. */
- return process_init_constructor (type,
- build_nt (CONSTRUCTOR, NULL_TREE,
- tree_cons (NULL_TREE,
- inside_init,
- NULL_TREE)),
- NULL_PTR, constructor_constant,
- constructor_constant, ofwhat);
- }
-
- error_init ("invalid initializer%s", " for `%s'", ofwhat);
- return error_mark_node;
-}
-
-/* Process a constructor for a variable of type TYPE.
- The constructor elements may be specified either with INIT or with ELTS,
- only one of which should be non-null.
-
- If INIT is specified, it is a CONSTRUCTOR node which is specifically
- and solely for initializing this datum.
-
- If ELTS is specified, it is the address of a variable containing
- a list of expressions. We take as many elements as we need
- from the head of the list and update the list.
-
- In the resulting constructor, TREE_CONSTANT is set if all elts are
- constant, and TREE_STATIC is set if, in addition, all elts are simple enough
- constants that the assembler and linker can compute them.
-
- The argument CONSTANT_VALUE says to print an error if either the
- value or any element is not a constant.
-
- The argument CONSTANT_ELEMENT says to print an error if an element
- of an aggregate is not constant. It does not apply to a value
- which is not a constructor.
-
- OFWHAT is a character string describing the object being initialized,
- for error messages. It might be "variable" or "variable.member"
- or "variable[17].member[5]".
-
- If OFWHAT is null, the description string is stored on the spelling
- stack. That is always true for recursive calls. */
-
-static tree
-process_init_constructor (type, init, elts, constant_value, constant_element,
- ofwhat)
- tree type, init, *elts;
- int constant_value, constant_element;
- char *ofwhat;
-{
- register tree tail;
- /* List of the elements of the result constructor,
- in reverse order. */
- register tree members = NULL;
- tree result;
- int allconstant = 1;
- int allsimple = 1;
- int erroneous = 0;
- int depth = SPELLING_DEPTH ();
-
- if (ofwhat)
- push_string (ofwhat);
-
- /* Make TAIL be the list of elements to use for the initialization,
- no matter how the data was given to us. */
-
- if (elts)
- {
- if (warn_missing_braces)
- {
- if (! partial_bracket_mentioned)
- warning ("aggregate has a partly bracketed initializer");
- partial_bracket_mentioned = 1;
- }
- tail = *elts;
- }
- else
- tail = CONSTRUCTOR_ELTS (init);
-
- /* Gobble as many elements as needed, and make a constructor or initial value
- for each element of this aggregate. Chain them together in result.
- If there are too few, use 0 for each scalar ultimate component. */
-
- if (TREE_CODE (type) == ARRAY_TYPE)
- {
- tree min_index, max_index;
- /* These are non-zero only within a range initializer. */
- tree start_index = 0, end_index = 0;
- /* Within a range, this is the value for the elts in the range. */
- tree range_val = 0;
- /* Do arithmetic using double integers, but don't use fold/build,
- because these allocate a new tree object everytime they are called,
- thus resulting in gcc using too much memory for large
- initializers. */
- union tree_node current_index_node, members_index_node;
- tree current_index = &current_index_node;
- tree members_index = &members_index_node;
- TREE_TYPE (current_index) = integer_type_node;
- TREE_TYPE (members_index) = integer_type_node;
-
- /* If we have array bounds, set our bounds from that. Otherwise,
- we have a lower bound of zero and an unknown upper bound. */
- if (TYPE_DOMAIN (type))
- {
- min_index = TYPE_MIN_VALUE (TYPE_DOMAIN (type));
- max_index = TYPE_MAX_VALUE (TYPE_DOMAIN (type));
- }
- else
- {
- min_index = integer_zero_node;
- max_index = 0;
- }
-
- TREE_INT_CST_LOW (members_index) = TREE_INT_CST_LOW (min_index);
- TREE_INT_CST_HIGH (members_index) = TREE_INT_CST_HIGH (min_index);
-
- /* Don't leave the loop based on index if the next item has an explicit
- index value that will override it. */
-
- for (TREE_INT_CST_LOW (current_index) = TREE_INT_CST_LOW (min_index),
- TREE_INT_CST_HIGH (current_index) = TREE_INT_CST_HIGH (min_index);
- tail != 0 || end_index;
- add_double (TREE_INT_CST_LOW (current_index),
- TREE_INT_CST_HIGH (current_index), 1, 0,
- &TREE_INT_CST_LOW (current_index),
- &TREE_INT_CST_HIGH (current_index)))
- {
- register tree next1 = 0;
-
- /* Handle the case where we are inside of a range.
- current_index increments through the range,
- so just keep reusing the same element of TAIL
- until the end of the range. */
- if (end_index != 0)
- {
- next1 = range_val;
- if (!tree_int_cst_lt (current_index, end_index))
- end_index = 0;
- }
-
- /* If this element specifies an index,
- move to that index before storing it in the new list. */
- else if (TREE_PURPOSE (tail) != 0)
- {
- int win = 0;
- tree index = TREE_PURPOSE (tail);
-
- if (index && (TREE_CODE (index) == NON_LVALUE_EXPR
- || TREE_CODE (index) == NOP_EXPR))
- index = TREE_OPERAND (index, 0);
-
- /* Begin a range. */
- if (TREE_CODE (index) == TREE_LIST)
- {
- start_index = TREE_PURPOSE (index);
- end_index = TREE_PURPOSE (TREE_CHAIN (index));
-
- /* Expose constants. It Doesn't matter if we change
- the mode.*/
- if (end_index
- && (TREE_CODE (end_index) == NON_LVALUE_EXPR
- || TREE_CODE (end_index) == NOP_EXPR))
- end_index = TREE_OPERAND (end_index, 0);
- if (start_index
- && (TREE_CODE (start_index) == NON_LVALUE_EXPR
- || TREE_CODE (start_index) == NOP_EXPR))
- start_index = TREE_OPERAND (start_index, 0);
-
- constant_expression_warning (start_index);
- constant_expression_warning (end_index);
-
- if ((TREE_CODE (start_index) == IDENTIFIER_NODE)
- || (TREE_CODE (end_index) == IDENTIFIER_NODE))
- error ("field name used as index in array initializer");
- else if ((TREE_CODE (start_index) != INTEGER_CST)
- || (TREE_CODE (end_index) != INTEGER_CST))
- error ("non-constant or non-integer array index in initializer");
- else if (tree_int_cst_lt (start_index, min_index)
- || (max_index && tree_int_cst_lt (max_index, start_index))
- || tree_int_cst_lt (end_index, min_index)
- || (max_index && tree_int_cst_lt (max_index, end_index)))
- error ("array index out of range in initializer");
- else if (tree_int_cst_lt (end_index, start_index))
- {
- /* If the range is empty, don't initialize any elements,
- but do reset current_index for the next initializer
- element. */
- warning ("empty array initializer range");
- tail = TREE_CHAIN (tail);
- TREE_INT_CST_LOW (current_index)
- = TREE_INT_CST_LOW (end_index);
- TREE_INT_CST_HIGH (current_index)
- = TREE_INT_CST_HIGH (end_index);
- continue;
- }
- else
- {
- TREE_INT_CST_LOW (current_index)
- = TREE_INT_CST_LOW (start_index);
- TREE_INT_CST_HIGH (current_index)
- = TREE_INT_CST_HIGH (start_index);
- win = 1;
- /* See if the first element is also the last. */
- if (!tree_int_cst_lt (current_index, end_index))
- end_index = 0;
- }
- }
- else if (TREE_CODE (index) == IDENTIFIER_NODE)
- error ("field name used as index in array initializer");
- else if (TREE_CODE (index) != INTEGER_CST)
- error ("non-constant array index in initializer");
- else if (tree_int_cst_lt (index, min_index)
- || (max_index && tree_int_cst_lt (max_index, index)))
- error ("array index out of range in initializer");
- else
- {
- constant_expression_warning (index);
- TREE_INT_CST_LOW (current_index) = TREE_INT_CST_LOW (index);
- TREE_INT_CST_HIGH (current_index)
- = TREE_INT_CST_HIGH (index);
- win = 1;
- }
-
- if (!win)
- {
- /* If there was an error, end the current range. */
- end_index = 0;
- TREE_VALUE (tail) = error_mark_node;
- }
- }
-
- if (max_index && tree_int_cst_lt (max_index, current_index))
- break; /* Stop if we've indeed run out of elements. */
-
- /* Now digest the value specified. */
- if (next1 != 0)
- ;
- else if (TREE_VALUE (tail) != 0)
- {
- tree tail1 = tail;
-
- /* Build the element of this array, with "[]" notation. For
- error messages, we assume that the index fits within a
- host int. */
- SAVE_SPELLING_DEPTH
- ({
- push_array_bounds (TREE_INT_CST_LOW (current_index));
- next1 = digest_init (TYPE_MAIN_VARIANT (TREE_TYPE (type)),
- TREE_VALUE (tail), &tail1,
- /* Both of these are the same because
- a value here is an elt overall. */
- constant_element, constant_element,
- NULL_PTR);
- });
-
- if (tail1 != 0 && TREE_CODE (tail1) != TREE_LIST)
- abort ();
- if (tail == tail1 && TYPE_DOMAIN (type) == 0)
- {
- error_init (
- "non-empty initializer for array%s of empty elements",
- " `%s'", NULL_PTR);
- /* Just ignore what we were supposed to use. */
- tail1 = 0;
- }
- tail = tail1;
- }
- else
- {
- next1 = error_mark_node;
- tail = TREE_CHAIN (tail);
- }
-
- if (end_index != 0)
- range_val = next1;
-
- if (next1 == error_mark_node)
- erroneous = 1;
- else if (!TREE_CONSTANT (next1))
- allconstant = 0;
- else if (initializer_constant_valid_p (next1, TREE_TYPE (next1)) == 0)
- allsimple = 0;
-
- /* Now store NEXT1 in the list, I elements from the *end*.
- Make the list longer if necessary. */
- while (! tree_int_cst_lt (current_index, members_index))
- {
- if (free_tree_list)
- {
- TREE_CHAIN (free_tree_list) = members;
- TREE_PURPOSE (free_tree_list) = NULL_TREE;
- TREE_VALUE (free_tree_list) = NULL_TREE;
- members = free_tree_list;
- free_tree_list = NULL_TREE;
- }
- else
- members = tree_cons (NULL_TREE, NULL_TREE, members);
- add_double (TREE_INT_CST_LOW (members_index),
- TREE_INT_CST_HIGH (members_index), 1, 0,
- &TREE_INT_CST_LOW (members_index),
- &TREE_INT_CST_HIGH (members_index));
- }
-
- {
- tree temp;
- union tree_node idx_node;
- tree idx = &idx_node;
- TREE_TYPE (idx) = integer_type_node;
-
- temp = members;
- for (add_double (TREE_INT_CST_LOW (members_index),
- TREE_INT_CST_HIGH (members_index), -1, -1,
- &TREE_INT_CST_LOW (idx),
- &TREE_INT_CST_HIGH (idx));
- tree_int_cst_lt (current_index, idx);
- add_double (TREE_INT_CST_LOW (idx),
- TREE_INT_CST_HIGH (idx), -1, -1,
- &TREE_INT_CST_LOW (idx),
- &TREE_INT_CST_HIGH (idx)))
- temp = TREE_CHAIN (temp);
- TREE_VALUE (temp) = next1;
- }
- }
- }
- if (TREE_CODE (type) == RECORD_TYPE)
- {
- register tree field;
- int members_length = 0;
- int i;
-
- /* Don't leave the loop based on field just yet; see if next item
- overrides the expected field first. */
-
- for (field = TYPE_FIELDS (type), i = 0; tail;
- field = TREE_CHAIN (field), i++)
- {
- register tree next1;
-
- /* If this element specifies a field,
- move to that field before storing it in the new list. */
- if (TREE_PURPOSE (tail) != 0)
- {
- int win = 0;
-
- if (TREE_CODE (TREE_PURPOSE (tail)) != IDENTIFIER_NODE)
- error ("index value instead of field name in structure initializer");
- else
- {
- tree temp;
- int j;
- for (temp = TYPE_FIELDS (type), j = 0;
- temp;
- temp = TREE_CHAIN (temp), j++)
- if (DECL_NAME (temp) == TREE_PURPOSE (tail))
- break;
- if (temp)
- field = temp, i = j, win = 1;
- else
- error ("no field `%s' in structure being initialized",
- IDENTIFIER_POINTER (TREE_PURPOSE (tail)));
- }
- if (!win)
- TREE_VALUE (tail) = error_mark_node;
- }
-
- if (field == 0)
- break; /* No more fields to init. */
-
- if (! DECL_NAME (field))
- {
- next1 = integer_zero_node;
- }
- else if (TREE_VALUE (tail) != 0)
- {
- tree tail1 = tail;
-
- /* Build the name of this member, with a "." for membership. */
- SAVE_SPELLING_DEPTH
- ({
- push_member_name (IDENTIFIER_POINTER (DECL_NAME (field)));
- next1 = digest_init (TREE_TYPE (field),
- TREE_VALUE (tail), &tail1,
- constant_element, constant_element,
- NULL_PTR);
- });
- if (tail1 != 0 && TREE_CODE (tail1) != TREE_LIST)
- abort ();
- tail = tail1;
- }
- else
- {
- next1 = error_mark_node;
- tail = TREE_CHAIN (tail);
- }
-
- if (next1 == error_mark_node)
- erroneous = 1;
- else if (!TREE_CONSTANT (next1))
- allconstant = 0;
- else if (initializer_constant_valid_p (next1, TREE_TYPE (next1)) == 0)
- allsimple = 0;
-
- /* Now store NEXT1 in the list, I elements from the *end*.
- Make the list longer if necessary. */
- while (i >= members_length)
- {
- if (free_tree_list)
- {
- TREE_CHAIN (free_tree_list) = members;
- TREE_PURPOSE (free_tree_list) = NULL_TREE;
- TREE_VALUE (free_tree_list) = NULL_TREE;
- members = free_tree_list;
- free_tree_list = NULL_TREE;
- }
- else
- members = tree_cons (NULL_TREE, NULL_TREE, members);
- members_length++;
- }
- {
- tree temp;
- int j;
-
- temp = members;
- for (j = members_length - 1; j > i; j--)
- temp = TREE_CHAIN (temp);
- TREE_VALUE (temp) = next1;
- TREE_PURPOSE (temp) = field;
- }
- }
- }
- if (TREE_CODE (type) == UNION_TYPE)
- {
- register tree field = TYPE_FIELDS (type);
- register tree next1;
-
- /* Find the first named field. ANSI decided in September 1990
- that only named fields count here. */
- while (field && DECL_NAME (field) == 0)
- field = TREE_CHAIN (field);
-
- /* For a union, get the initializer for 1 fld. */
-
- if (tail == 0)
- {
- error ("empty initializer for union");
- tail = build_tree_list (0, 0);
- }
-
- /* If this element specifies a field, initialize via that field. */
- if (TREE_PURPOSE (tail) != 0)
- {
- int win = 0;
-
- if (TREE_CODE (TREE_PURPOSE (tail)) == FIELD_DECL)
- /* Handle the case of a call by build_c_cast. */
- field = TREE_PURPOSE (tail), win = 1;
- else if (TREE_CODE (TREE_PURPOSE (tail)) != IDENTIFIER_NODE)
- error ("index value instead of field name in union initializer");
- else
- {
- tree temp;
- for (temp = TYPE_FIELDS (type);
- temp;
- temp = TREE_CHAIN (temp))
- if (DECL_NAME (temp) == TREE_PURPOSE (tail))
- break;
- if (temp)
- field = temp, win = 1;
- else
- error ("no field `%s' in union being initialized",
- IDENTIFIER_POINTER (TREE_PURPOSE (tail)));
- }
- if (!win)
- TREE_VALUE (tail) = error_mark_node;
- }
-
- if (TREE_VALUE (tail) != 0)
- {
- tree tail1 = tail;
-
- /* Build the name of this member, with a "." for membership. */
- SAVE_SPELLING_DEPTH
- ({
- push_member_name (IDENTIFIER_POINTER (DECL_NAME (field)));
- next1 = digest_init (TREE_TYPE (field),
- TREE_VALUE (tail), &tail1,
- constant_value, constant_element, NULL_PTR);
- });
- if (tail1 != 0 && TREE_CODE (tail1) != TREE_LIST)
- abort ();
- tail = tail1;
- }
- else
- {
- next1 = error_mark_node;
- tail = TREE_CHAIN (tail);
- }
-
- if (next1 == error_mark_node)
- erroneous = 1;
- else if (!TREE_CONSTANT (next1))
- allconstant = 0;
- else if (initializer_constant_valid_p (next1, TREE_TYPE (next1)) == 0)
- allsimple = 0;
- if (free_tree_list)
- {
- TREE_CHAIN (free_tree_list) = members;
- TREE_PURPOSE (free_tree_list) = field;
- TREE_VALUE (free_tree_list) = next1;
- members = free_tree_list;
- free_tree_list = NULL_TREE;
- }
- else
- members = tree_cons (field, next1, members);
- }
-
- /* If arguments were specified as a list, just remove the ones we used. */
- if (elts)
- *elts = tail;
- /* If arguments were specified as a constructor,
- complain unless we used all the elements of the constructor. */
- else if (tail)
- {
- if (TREE_CODE (type) == UNION_TYPE)
- {
- pedwarn_init ("excess elements in union initializer%s",
- " after `%s'", NULL_PTR);
- }
- else
- {
- pedwarn_init ("excess elements in aggregate initializer%s",
- " after `%s'", NULL_PTR);
- }
- }
-
- /* It might be possible to use SAVE_SPELLING_DEPTH, but I suspect that
- some preprocessor somewhere won't accept that much text as an argument.
- It's also likely to make debugging difficult. */
-
- RESTORE_SPELLING_DEPTH (depth);
-
- if (erroneous)
- return error_mark_node;
-
- if (elts)
- result = build (CONSTRUCTOR, type, NULL_TREE, nreverse (members));
- else
- {
- result = init;
- CONSTRUCTOR_ELTS (result) = nreverse (members);
- TREE_TYPE (result) = type;
- TREE_CONSTANT (result) = 0;
- TREE_STATIC (result) = 0;
- }
- if (allconstant) TREE_CONSTANT (result) = 1;
- if (allconstant && allsimple) TREE_STATIC (result) = 1;
- return result;
-}
-
-/* Expand an ASM statement with operands, handling output operands
- that are not variables or INDIRECT_REFS by transforming such
- cases into cases that expand_asm_operands can handle.
-
- Arguments are same as for expand_asm_operands. */
-
-void
-c_expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line)
- tree string, outputs, inputs, clobbers;
- int vol;
- char *filename;
- int line;
-{
- int noutputs = list_length (outputs);
- register int i;
- /* o[I] is the place that output number I should be written. */
- register tree *o = (tree *) alloca (noutputs * sizeof (tree));
- register tree tail;
-
- if (TREE_CODE (string) == ADDR_EXPR)
- string = TREE_OPERAND (string, 0);
- if (TREE_CODE (string) != STRING_CST)
- {
- error ("asm template is not a string constant");
- return;
- }
-
- /* Record the contents of OUTPUTS before it is modified. */
- for (i = 0, tail = outputs; tail; tail = TREE_CHAIN (tail), i++)
- o[i] = TREE_VALUE (tail);
-
- /* Perform default conversions on array and function inputs. */
- /* Don't do this for other types--
- it would screw up operands expected to be in memory. */
- for (i = 0, tail = inputs; tail; tail = TREE_CHAIN (tail), i++)
- if (TREE_CODE (TREE_TYPE (TREE_VALUE (tail))) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE (TREE_VALUE (tail))) == FUNCTION_TYPE)
- TREE_VALUE (tail) = default_conversion (TREE_VALUE (tail));
-
- /* Generate the ASM_OPERANDS insn;
- store into the TREE_VALUEs of OUTPUTS some trees for
- where the values were actually stored. */
- expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line);
-
- /* Copy all the intermediate outputs into the specified outputs. */
- for (i = 0, tail = outputs; tail; tail = TREE_CHAIN (tail), i++)
- {
- if (o[i] != TREE_VALUE (tail))
- {
- expand_expr (build_modify_expr (o[i], NOP_EXPR, TREE_VALUE (tail)),
- 0, VOIDmode, 0);
- free_temp_slots ();
- }
- /* Detect modification of read-only values.
- (Otherwise done by build_modify_expr.) */
- else
- {
- tree type = TREE_TYPE (o[i]);
- if (TYPE_READONLY (type)
- || ((TREE_CODE (type) == RECORD_TYPE
- || TREE_CODE (type) == UNION_TYPE)
- && C_TYPE_FIELDS_READONLY (type)))
- readonly_warning (o[i], "modification by `asm'");
- }
- }
-
- /* Those MODIFY_EXPRs could do autoincrements. */
- emit_queue ();
-}
-
-/* Expand a C `return' statement.
- RETVAL is the expression for what to return,
- or a null pointer for `return;' with no value. */
-
-void
-c_expand_return (retval)
- tree retval;
-{
- tree valtype = TREE_TYPE (TREE_TYPE (current_function_decl));
-
- if (TREE_THIS_VOLATILE (current_function_decl))
- warning ("function declared `volatile' has a `return' statement");
-
- if (!retval)
- {
- current_function_returns_null = 1;
- if (warn_return_type && valtype != 0 && TREE_CODE (valtype) != VOID_TYPE)
- warning ("`return' with no value, in function returning non-void");
- expand_null_return ();
- }
- else if (valtype == 0 || TREE_CODE (valtype) == VOID_TYPE)
- {
- current_function_returns_null = 1;
- if (pedantic || TREE_CODE (TREE_TYPE (retval)) != VOID_TYPE)
- pedwarn ("`return' with a value, in function returning void");
- expand_return (retval);
- }
- else
- {
- tree t = convert_for_assignment (valtype, retval, "return",
- NULL_TREE, NULL_TREE, 0);
- tree res = DECL_RESULT (current_function_decl);
- t = build (MODIFY_EXPR, TREE_TYPE (res),
- res, convert (TREE_TYPE (res), t));
- expand_return (t);
- current_function_returns_value = 1;
- }
-}
-
-/* Start a C switch statement, testing expression EXP.
- Return EXP if it is valid, an error node otherwise. */
-
-tree
-c_expand_start_case (exp)
- tree exp;
-{
- register enum tree_code code = TREE_CODE (TREE_TYPE (exp));
- tree type = TREE_TYPE (exp);
-
- if (code != INTEGER_TYPE && code != ENUMERAL_TYPE && code != ERROR_MARK)
- {
- error ("switch quantity not an integer");
- exp = error_mark_node;
- }
- else
- {
- tree index;
- type = TYPE_MAIN_VARIANT (TREE_TYPE (exp));
-
- if (warn_traditional
- && (type == long_integer_type_node
- || type == long_unsigned_type_node))
- pedwarn ("`long' switch expression not converted to `int' in ANSI C");
-
- exp = default_conversion (exp);
- type = TREE_TYPE (exp);
- index = get_unwidened (exp, NULL_TREE);
- /* We can't strip a conversion from a signed type to an unsigned,
- because if we did, int_fits_type_p would do the wrong thing
- when checking case values for being in range,
- and it's too hard to do the right thing. */
- if (TREE_UNSIGNED (TREE_TYPE (exp))
- == TREE_UNSIGNED (TREE_TYPE (index)))
- exp = index;
- }
-
- expand_start_case (1, exp, type, "switch statement");
-
- return exp;
-}