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// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
// RUN: %clang_cc1 -E %s 2>&1 | grep 'blonk.c:92:2: error: #error ABC'
// RUN: %clang_cc1 -E %s 2>&1 | grep 'blonk.c:93:2: error: #error DEF'
#line 'a' // expected-error {{#line directive requires a positive integer argument}}
#line 0 // expected-error {{#line directive requires a positive integer argument}}
#line 00 // expected-error {{#line directive requires a positive integer argument}}
#line 2147483648 // expected-warning {{C requires #line number to be less than 2147483648, allowed as extension}}
#line 42 // ok
#line 42 'a' // expected-error {{invalid filename for #line directive}}
#line 42 "foo/bar/baz.h" // ok
// #line directives expand macros.
#define A 42 "foo"
#line A
# 42
# 42 "foo"
# 42 "foo" 2 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
# 42 "foo" 1 3 // enter
# 42 "foo" 2 3 // exit
# 42 "foo" 2 3 4 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
# 42 "foo" 3 4
# 'a' // expected-error {{invalid preprocessing directive}}
# 42 'f' // expected-error {{invalid filename for line marker directive}}
# 42 1 3 // expected-error {{invalid filename for line marker directive}}
# 42 "foo" 3 1 // expected-error {{invalid flag line marker directive}}
# 42 "foo" 42 // expected-error {{invalid flag line marker directive}}
# 42 "foo" 1 2 // expected-error {{invalid flag line marker directive}}
// These are checked by the RUN line.
#line 92 "blonk.c"
#error ABC // expected-error {{#error ABC}}
#error DEF // expected-error {{#error DEF}}
// Verify that linemarker diddling of the system header flag works.
# 192 "glomp.h" // not a system header.
typedef int x; // expected-note {{previous definition is here}}
typedef int x; // expected-error {{redefinition of typedef 'x' is invalid in C}}
# 192 "glomp.h" 3 // System header.
typedef int y; // ok
typedef int y; // ok
typedef int q; // q is in system header.
#line 42 "blonk.h" // doesn't change system headerness.
typedef int z; // ok
typedef int z; // ok
# 97 // doesn't change system headerness.
typedef int z1; // ok
typedef int z1; // ok
# 42 "blonk.h" // DOES change system headerness.
typedef int w; // expected-note {{previous definition is here}}
typedef int w; // expected-error {{redefinition of typedef 'w' is invalid in C}}
typedef int q; // original definition in system header, should not diagnose.
// This should not produce an "extra tokens at end of #line directive" warning,
// because #line is allowed to contain expanded tokens.
#define EMPTY()
#line 2 "foo.c" EMPTY( )
#line 2 "foo.c" NONEMPTY( ) // expected-warning{{extra tokens at end of #line directive}}
// PR3940
#line 0xf // expected-error {{#line directive requires a simple digit sequence}}
#line 42U // expected-error {{#line directive requires a simple digit sequence}}
// Line markers are digit strings interpreted as decimal numbers, this is
// 10, not 8.
#line 010 // expected-warning {{#line directive interprets number as decimal, not octal}}
extern int array[__LINE__ == 10 ? 1:-1];
/* PR3917 */
#line 41
extern char array2[\
_\
_LINE__ == 42 ? 1: -1]; /* line marker is location of first _ */
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