1 // RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wno-gnu
2 // RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wgnu
3 // RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wno-gnu \
4 // RUN: -Wgnu-alignof-expression -Wgnu-case-range -Wgnu-complex-integer -Wgnu-conditional-omitted-operand \
5 // RUN: -Wgnu-empty-initializer -Wgnu-label-as-value -Wgnu-statement-expression \
6 // RUN: -Wgnu-compound-literal-initializer -Wgnu-flexible-array-initializer \
7 // RUN: -Wgnu-redeclared-enum -Wgnu-folding-constant -Wgnu-empty-struct \
8 // RUN: -Wgnu-union-cast -Wgnu-variable-sized-type-not-at-end
9 // RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wgnu \
10 // RUN: -Wno-gnu-alignof-expression -Wno-gnu-case-range -Wno-gnu-complex-integer -Wno-gnu-conditional-omitted-operand \
11 // RUN: -Wno-gnu-empty-initializer -Wno-gnu-label-as-value -Wno-gnu-statement-expression \
12 // RUN: -Wno-gnu-compound-literal-initializer -Wno-gnu-flexible-array-initializer \
13 // RUN: -Wno-gnu-redeclared-enum -Wno-gnu-folding-constant -Wno-gnu-empty-struct \
14 // RUN: -Wno-gnu-union-cast -Wno-gnu-variable-sized-type-not-at-end
15 // Additional disabled tests:
16 // %clang_cc1 -fsyntax-only -verify %s -DALIGNOF -Wno-gnu -Wgnu-alignof-expression
17 // %clang_cc1 -fsyntax-only -verify %s -DCASERANGE -Wno-gnu -Wgnu-case-range
18 // %clang_cc1 -fsyntax-only -verify %s -DCOMPLEXINT -Wno-gnu -Wgnu-complex-integer
19 // %clang_cc1 -fsyntax-only -verify %s -DOMITTEDOPERAND -Wno-gnu -Wgnu-conditional-omitted-operand
20 // %clang_cc1 -fsyntax-only -verify %s -DEMPTYINIT -Wno-gnu -Wgnu-empty-initializer
21 // %clang_cc1 -fsyntax-only -verify %s -DLABELVALUE -Wno-gnu -Wgnu-label-as-value
22 // %clang_cc1 -fsyntax-only -verify %s -DSTATEMENTEXP -Wno-gnu -Wgnu-statement-expression
23 // %clang_cc1 -fsyntax-only -verify %s -DCOMPOUNDLITERALINITIALIZER -Wno-gnu -Wgnu-compound-literal-initializer
24 // %clang_cc1 -fsyntax-only -verify %s -DFLEXIBLEARRAYINITIALIZER -Wno-gnu -Wgnu-flexible-array-initializer
25 // %clang_cc1 -fsyntax-only -verify %s -DREDECLAREDENUM -Wno-gnu -Wgnu-redeclared-enum
26 // %clang_cc1 -fsyntax-only -verify %s -DUNIONCAST -Wno-gnu -Wgnu-union-cast
27 // %clang_cc1 -fsyntax-only -verify %s -DVARIABLESIZEDTYPENOTATEND -Wno-gnu -Wgnu-variable-sized-type-not-at-end
28 // %clang_cc1 -fsyntax-only -verify %s -DFOLDINGCONSTANT -Wno-gnu -Wgnu-folding-constant
29 // %clang_cc1 -fsyntax-only -verify %s -DEMPTYSTRUCT -Wno-gnu -Wgnu-empty-struct
32 // expected-no-diagnostics
37 // expected-warning@+4 {{'_Alignof' applied to an expression is a GNU extension}}
41 _Static_assert(_Alignof(align) > 0, "align's alignment is wrong");
45 // expected-warning@+5 {{use of GNU case range extension}}
48 void caserange(int x) {
56 // expected-warning@+3 {{complex integer types are a GNU extension}}
59 _Complex short int complexint;
62 #if ALL || OMITTEDOPERAND
63 // expected-warning@+3 {{use of GNU ?: conditional expression extension, omitting middle operand}}
66 static const char* omittedoperand = (const char*)0 ?: "Null";
70 // expected-warning@+3 {{use of GNU empty initializer extension}}
73 struct { int x; } emptyinit = {};
77 // expected-warning@+6 {{use of GNU address-of-label extension}}
78 // expected-warning@+7 {{use of GNU indirect-goto extension}}
89 #if ALL || STATEMENTEXP
90 // expected-warning@+5 {{use of GNU statement expression extension}}
99 #if ALL || COMPOUNDLITERALINITIALIZER
100 // expected-warning@+4 {{initialization of an array of type 'int [5]' from a compound literal of type 'int [5]' is a GNU extension}}
104 int cli[5] = (int[]){1, 2, 3, 4, 5};
107 #if ALL || FLEXIBLEARRAYINITIALIZER
108 // expected-note@+6 {{initialized flexible array member 'y' is here}}
109 // expected-warning@+6 {{flexible array initialization is a GNU extension}}
115 } fai = { 1, { 2, 3, 4 } };
118 #if ALL || FOLDINGCONSTANT
119 // expected-warning@+5 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}}
120 // expected-warning@+7 {{variable length array folded to constant array as an extension}}
124 fic = (int)(0.75 * 1000 * 1000)
126 static const int size = 100;
127 void foo(void) { int data[size]; }
129 #if ALL || REDECLAREDENUM
130 // expected-note@+4 {{previous definition is here}}
131 // expected-warning@+8 {{redeclaration of already-defined enum 'RE' is a GNU extension}}
143 // expected-warning@+4 {{cast to union type is a GNU extension}}
146 union uc { int i; unsigned : 3; };
147 union uc w = (union uc)2;
150 #if ALL || VARIABLESIZEDTYPENOTATEND
151 // expected-warning@+8 {{field 'hdr' with variable sized type 'struct vst' not at the end of a struct or class is a GNU extension}}
164 #if ALL || EMPTYSTRUCT
165 // expected-warning@+4 {{empty struct is a GNU extension}}
166 // expected-warning@+4 {{struct without named members is a GNU extension}}
170 struct {int:5;} swnm;