1 files changed, 171 insertions, 0 deletions
diff --git a/test/Sema/gnu-flags.c b/test/Sema/gnu-flags.c
new file mode 100644
index 000000000000..e7588b7b371e
--- /dev/null
+++ b/test/Sema/gnu-flags.c
@@ -0,0 +1,171 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wno-gnu
+// RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wgnu 
+// RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wno-gnu \
+// RUN:   -Wgnu-alignof-expression -Wgnu-case-range -Wgnu-complex-integer -Wgnu-conditional-omitted-operand \
+// RUN:   -Wgnu-empty-initializer -Wgnu-label-as-value -Wgnu-statement-expression \
+// RUN:   -Wgnu-compound-literal-initializer -Wgnu-flexible-array-initializer \
+// RUN:   -Wgnu-redeclared-enum  -Wgnu-folding-constant -Wgnu-empty-struct \
+// RUN:   -Wgnu-union-cast -Wgnu-variable-sized-type-not-at-end
+// RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wgnu \
+// RUN:   -Wno-gnu-alignof-expression -Wno-gnu-case-range -Wno-gnu-complex-integer -Wno-gnu-conditional-omitted-operand \
+// RUN:   -Wno-gnu-empty-initializer -Wno-gnu-label-as-value -Wno-gnu-statement-expression \
+// RUN:   -Wno-gnu-compound-literal-initializer -Wno-gnu-flexible-array-initializer \
+// RUN:   -Wno-gnu-redeclared-enum -Wno-gnu-folding-constant -Wno-gnu-empty-struct \
+// RUN:   -Wno-gnu-union-cast -Wno-gnu-variable-sized-type-not-at-end
+// Additional disabled tests:
+// %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -Wno-gnu -Wgnu-alignof-expression
+// %clang_cc1 -fsyntax-only -verify %s -DCASERANGE -Wno-gnu -Wgnu-case-range
+// %clang_cc1 -fsyntax-only -verify %s -DCOMPLEXINT -Wno-gnu -Wgnu-complex-integer
+// %clang_cc1 -fsyntax-only -verify %s -DOMITTEDOPERAND -Wno-gnu -Wgnu-conditional-omitted-operand
+// %clang_cc1 -fsyntax-only -verify %s -DEMPTYINIT -Wno-gnu -Wgnu-empty-initializer
+// %clang_cc1 -fsyntax-only -verify %s -DLABELVALUE -Wno-gnu -Wgnu-label-as-value
+// %clang_cc1 -fsyntax-only -verify %s -DSTATEMENTEXP -Wno-gnu -Wgnu-statement-expression
+// %clang_cc1 -fsyntax-only -verify %s -DCOMPOUNDLITERALINITIALIZER -Wno-gnu -Wgnu-compound-literal-initializer
+// %clang_cc1 -fsyntax-only -verify %s -DFLEXIBLEARRAYINITIALIZER -Wno-gnu -Wgnu-flexible-array-initializer
+// %clang_cc1 -fsyntax-only -verify %s -DREDECLAREDENUM -Wno-gnu -Wgnu-redeclared-enum
+// %clang_cc1 -fsyntax-only -verify %s -DUNIONCAST -Wno-gnu -Wgnu-union-cast
+// %clang_cc1 -fsyntax-only -verify %s -DVARIABLESIZEDTYPENOTATEND -Wno-gnu -Wgnu-variable-sized-type-not-at-end
+// %clang_cc1 -fsyntax-only -verify %s -DFOLDINGCONSTANT -Wno-gnu -Wgnu-folding-constant
+// %clang_cc1 -fsyntax-only -verify %s -DEMPTYSTRUCT -Wno-gnu -Wgnu-empty-struct
+
+#if NONE
+// expected-no-diagnostics
+#endif
+
+
+#if ALL || ALIGNOF
+// expected-warning@+4 {{'_Alignof' applied to an expression is a GNU extension}}
+#endif
+
+char align;
+_Static_assert(_Alignof(align) > 0, "align's alignment is wrong");
+
+
+#if ALL || CASERANGE
+// expected-warning@+5 {{use of GNU case range extension}}
+#endif
+
+void caserange(int x) {
+  switch (x) {
+  case 42 ... 44: ;
+  }
+}
+
+
+#if ALL || COMPLEXINT
+// expected-warning@+3 {{complex integer types are a GNU extension}}
+#endif
+
+_Complex short int complexint;
+
+
+#if ALL || OMITTEDOPERAND
+// expected-warning@+3 {{use of GNU ?: conditional expression extension, omitting middle operand}}
+#endif
+
+static const char* omittedoperand = (const char*)0 ?: "Null";
+
+
+#if ALL || EMPTYINIT
+// expected-warning@+3 {{use of GNU empty initializer extension}}
+#endif
+
+struct { int x; } emptyinit = {};
+
+
+#if ALL || LABELVALUE
+// expected-warning@+6 {{use of GNU address-of-label extension}}
+// expected-warning@+7 {{use of GNU indirect-goto extension}}
+#endif
+
+void labelvalue() {
+	void *ptr;
+	ptr = &&foo;
+foo:
+	goto *ptr;
+}
+
+
+#if ALL || STATEMENTEXP
+// expected-warning@+5 {{use of GNU statement expression extension}}
+#endif
+
+void statementexp()
+{
+	int a = ({ 1; });
+}
+
+
+#if ALL || COMPOUNDLITERALINITIALIZER
+// expected-warning@+4 {{initialization of an array of type 'int [5]' from a compound literal of type 'int [5]' is a GNU extension}}
+#endif
+
+typedef int int5[5];
+int cli[5] = (int[]){1, 2, 3, 4, 5};
+
+
+#if ALL || FLEXIBLEARRAYINITIALIZER
+// expected-note@+6 {{initialized flexible array member 'y' is here}}
+// expected-warning@+6 {{flexible array initialization is a GNU extension}}
+#endif
+
+struct fai {
+  int x;
+  int y[];
+} fai = { 1, { 2, 3, 4 } };
+
+
+#if ALL || FOLDINGCONSTANT
+// expected-warning@+5 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}}
+// expected-warning@+7 {{variable length array folded to constant array as an extension}}
+#endif
+
+enum {
+	fic = (int)(0.75 * 1000 * 1000)
+};
+static const int size = 100;
+void foo(void) { int data[size]; }
+
+#if ALL || REDECLAREDENUM
+// expected-note@+4 {{previous definition is here}}
+// expected-warning@+8 {{redeclaration of already-defined enum 'RE' is a GNU extension}}
+#endif
+
+enum RE {
+  Val1,
+  Val2
+};
+
+enum RE;
+
+
+#if ALL || UNIONCAST
+// expected-warning@+4 {{cast to union type is a GNU extension}}
+#endif
+
+union uc { int i; unsigned : 3; };
+union uc w = (union uc)2;
+
+
+#if ALL || VARIABLESIZEDTYPENOTATEND
+// expected-warning@+8 {{field 'hdr' with variable sized type 'struct vst' not at the end of a struct or class is a GNU extension}}
+#endif
+
+struct vst {
+ short tag_type;
+ char tag_data[];
+};
+struct vstnae {
+  struct vst hdr;
+  char data;
+};
+
+
+#if ALL || EMPTYSTRUCT
+// expected-warning@+4 {{empty struct is a GNU extension}}
+// expected-warning@+4 {{struct without named members is a GNU extension}}
+#endif
+
+const struct {} es;
+struct {int:5;} swnm;
+