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 30 31 #if NONE 32 // expected-no-diagnostics 33 #endif 34 35 36 #if ALL || ALIGNOF 37 // expected-warning@+4 {{'_Alignof' applied to an expression is a GNU extension}} 38 #endif 39 40 char align; 41 _Static_assert(_Alignof(align) > 0, "align's alignment is wrong"); 42 43 44 #if ALL || CASERANGE 45 // expected-warning@+5 {{use of GNU case range extension}} 46 #endif 47 48 void caserange(int x) { 49 switch (x) { 50 case 42 ... 44: ; 51 } 52 } 53 54 55 #if ALL || COMPLEXINT 56 // expected-warning@+3 {{complex integer types are a GNU extension}} 57 #endif 58 59 _Complex short int complexint; 60 61 62 #if ALL || OMITTEDOPERAND 63 // expected-warning@+3 {{use of GNU ?: conditional expression extension, omitting middle operand}} 64 #endif 65 66 static const char* omittedoperand = (const char*)0 ?: "Null"; 67 68 69 #if ALL || EMPTYINIT 70 // expected-warning@+3 {{use of GNU empty initializer extension}} 71 #endif 72 73 struct { int x; } emptyinit = {}; 74 75 76 #if ALL || LABELVALUE 77 // expected-warning@+6 {{use of GNU address-of-label extension}} 78 // expected-warning@+7 {{use of GNU indirect-goto extension}} 79 #endif 80 81 void labelvalue() { 82 void *ptr; 83 ptr = &&foo; 84 foo: 85 goto *ptr; 86 } 87 88 89 #if ALL || STATEMENTEXP 90 // expected-warning@+5 {{use of GNU statement expression extension}} 91 #endif 92 93 void statementexp() 94 { 95 int a = ({ 1; }); 96 } 97 98 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}} 101 #endif 102 103 typedef int int5[5]; 104 int cli[5] = (int[]){1, 2, 3, 4, 5}; 105 106 107 #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}} 110 #endif 111 112 struct fai { 113 int x; 114 int y[]; 115 } fai = { 1, { 2, 3, 4 } }; 116 117 118 #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}} 121 #endif 122 123 enum { 124 fic = (int)(0.75 * 1000 * 1000) 125 }; 126 static const int size = 100; 127 void foo(void) { int data[size]; } 128 129 #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}} 132 #endif 133 134 enum RE { 135 Val1, 136 Val2 137 }; 138 139 enum RE; 140 141 142 #if ALL || UNIONCAST 143 // expected-warning@+4 {{cast to union type is a GNU extension}} 144 #endif 145 146 union uc { int i; unsigned : 3; }; 147 union uc w = (union uc)2; 148 149 150 #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}} 152 #endif 153 154 struct vst { 155 short tag_type; 156 char tag_data[]; 157 }; 158 struct vstnae { 159 struct vst hdr; 160 char data; 161 }; 162 163 164 #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}} 167 #endif 168 169 const struct {} es; 170 struct {int:5;} swnm; 171 172
