1 // RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-unknown-unknown %s 2 3 int complete_array_from_init[] = { 1, 2, [10] = 5, 1, 2, [5] = 2, 6 }; 4 5 int complete_array_from_init_check[((sizeof(complete_array_from_init) / sizeof(int)) == 13)? 1 : -1]; 6 7 int iarray[10] = { 8 [0] = 1, 9 [1 ... 5] = 2, 10 [ 6 ... 6 ] = 3, 11 [ 8 ... 7 ] = 4, // expected-error{{array designator range [8, 7] is empty}} 12 [10] = 5, 13 [-1] = 6 // expected-error{{array designator value '-1' is negative}} 14 }; 15 16 int iarray2[10] = { 17 [10] = 1, // expected-error{{array designator index (10) exceeds array bounds (10)}} 18 }; 19 20 int iarray3[10] = { 21 [3] 2, // expected-warning{{use of GNU 'missing =' extension in designator}} 22 [5 ... 12] = 2 // expected-error{{array designator index (12) exceeds array bounds (10)}} 23 }; 24 25 struct point { 26 double x; 27 double y; 28 }; 29 30 struct point p1 = { 31 .y = 1.0, 32 x: 2.0, // expected-warning{{}} 33 .a = 4.0, // expected-error{{field designator 'a' does not refer to any field in type 'struct point'}} 34 }; 35 36 struct point p2 = { 37 [1] = 1.0 // expected-error{{array designator cannot initialize non-array type}} 38 }; 39 40 struct point array[10] = { 41 [0].x = 1.0, 42 [1].y = 2.0, 43 [2].z = 3.0, // expected-error{{field designator 'z' does not refer to any field in type 'struct point'}} 44 }; 45 46 struct point array2[10] = { 47 [10].x = 2.0, // expected-error{{array designator index (10) exceeds array bounds (10)}} 48 [4 ... 5].y = 2.0, 49 [4 ... 6] = { .x = 3, .y = 4.0 } 50 }; 51 52 struct point array3[10] = { 53 .x = 5 // expected-error{{field designator cannot initialize a non-struct, non-union type}} 54 }; 55 56 struct rect { 57 struct point top_left; 58 struct point bottom_right; 59 }; 60 61 struct rect window = { .top_left.x = 1.0 }; 62 63 struct rect windows[] = { 64 [2].top_left = { 1.0, 2.0 }, 65 [4].bottom_right = { .y = 1.0 }, 66 { { .y = 7.0, .x = 8.0 }, { .x = 5.0 } }, 67 [3] = { .top_left = { 1.1, 2.2 }, .bottom_right = { .y = 1.1 } } 68 }; 69 70 int windows_size[((sizeof(windows) / sizeof(struct rect)) == 6)? 1 : -1]; 71 72 struct rect windows_bad[3] = { 73 [2].top_left = { { .x = 1.1 } }, // expected-error{{designator in initializer for scalar type}} 74 [1].top_left = { .x = 1.1 } 75 }; 76 77 struct gui { 78 struct rect windows[10]; 79 }; 80 81 struct gui gui[] = { 82 [5].windows[3].top_left.x = { 7.0 } // expected-warning{{braces around scalar initializer}} 83 }; 84 85 struct translator { 86 struct wonky { int * ptr; } wonky ; 87 struct rect window; 88 struct point offset; 89 } tran = { 90 .window = { .top_left = { 1.0, 2.0 } }, 91 { .x = 5.0, .y = 6.0 }, 92 .wonky = { 0 } 93 }; 94 95 int anint; 96 struct {int x,*y;} z[] = {[0].x = 2, &z[0].x}; 97 98 struct outer { struct inner { int x, *y; } in, *inp; } zz[] = { 99 [0].in.x = 2, &zz[0].in.x, &zz[0].in, 100 0, &anint, &zz[1].in, 101 [3].in = { .y = &anint, .x = 17 }, 102 [7].in.y = &anint, &zz[0].in, 103 [4].in.y = &anint, [5].in.x = 12 104 }; 105 106 int zz_sizecheck[sizeof(zz) / sizeof(struct outer) == 8? 1 : -1 ]; 107 108 struct disklabel_ops { 109 struct {} type; 110 int labelsize; 111 }; 112 113 struct disklabel_ops disklabel64_ops = { 114 .labelsize = sizeof(struct disklabel_ops) 115 }; 116 117 // PR clang/3378 118 int bitwidth[] = { [(long long int)1] = 5, [(short int)2] = 2 }; 119 int a[]= { [sizeof(int)] = 0 }; 120 int a2[]= { [0 ... sizeof(int)] = 0 }; 121 122 // Test warnings about initializers overriding previous initializers 123 struct X { 124 int a, b, c; 125 }; 126 127 int counter = 0; 128 int get8() { ++counter; return 8; } 129 130 void test() { 131 struct X xs[] = { 132 [0] = (struct X){1, 2}, // expected-note{{previous initialization is here}} 133 [0].c = 3, // expected-warning{{subobject initialization overrides initialization of other fields within its enclosing subobject}} 134 (struct X) {4, 5, 6}, // expected-note{{previous initialization is here}} 135 [1].b = get8(), // expected-warning{{subobject initialization overrides initialization of other fields within its enclosing subobject}} 136 [0].b = 8 137 }; 138 } 139 140 // FIXME: How do we test that this initializes the long properly? 141 union { char c; long l; } u1 = { .l = 0xFFFF }; 142 143 extern float global_float; 144 145 struct XX { int a, *b; }; 146 struct XY { int before; struct XX xx, *xp; float* after; } xy[] = { 147 0, 0, &xy[0].xx.a, &xy[0].xx, &global_float, 148 [1].xx = 0, &xy[1].xx.a, &xy[1].xx, &global_float, 149 0, // expected-note{{previous initialization is here}} 150 0, // expected-note{{previous initialization is here}} 151 [2].before = 0, // expected-warning{{initializer overrides prior initialization of this subobject}} 152 0, // expected-warning{{initializer overrides prior initialization of this subobject}} 153 &xy[2].xx.a, &xy[2].xx, &global_float 154 }; 155 156 // PR3519 157 struct foo { 158 int arr[10]; 159 }; 160 161 struct foo Y[10] = { 162 [1] .arr [1] = 2, 163 [4] .arr [2] = 4 164 }; 165 166 struct bar { 167 struct foo f; 168 float *arr[10]; 169 }; 170 171 extern float f; 172 struct bar saloon = { 173 .f.arr[3] = 1, 174 .arr = { &f } 175 }; 176 177 typedef unsigned char u_char; 178 typedef unsigned short u_short; 179 180 union wibble { 181 u_char arr1[6]; 182 u_short arr2[3]; 183 }; 184 185 const union wibble wobble = { .arr2[0] = 0xffff, 186 .arr2[1] = 0xffff, 187 .arr2[2] = 0xffff }; 188 189 const union wibble wobble2 = { .arr2 = {4, 5, 6}, 7 }; // expected-warning{{excess elements in union initializer}} 190 191 // PR3778 192 struct s { 193 union { int i; }; 194 }; 195 struct s si = { 196 { .i = 1 } 197 }; 198 199 double d0; 200 char c0; 201 float f0; 202 int i0; 203 204 struct Enigma { 205 union { 206 struct { 207 struct { 208 double *double_ptr; 209 char *string; 210 }; 211 float *float_ptr; 212 }; 213 int *int_ptr; 214 }; 215 char *string2; 216 }; 217 218 struct Enigma enigma = { 219 .double_ptr = &d0, &c0, 220 &f0, // expected-note{{previous}} 221 &c0, 222 .float_ptr = &f0 // expected-warning{{overrides}} 223 }; 224 225 226 /// PR4073 227 /// Should use evaluate to fold aggressively and emit a warning if not an ice. 228 extern int crazy_x; 229 230 int crazy_Y[] = { 231 [ 0 ? crazy_x : 4] = 1 232 }; 233 234 // PR5843 235 struct expr { 236 int nargs; 237 union { 238 unsigned long int num; 239 struct expr *args[3]; 240 } val; 241 }; 242 243 struct expr expr0 = { 244 .nargs = 2, 245 .val = { 246 .args = { 247 [0] = (struct expr *)0, 248 [1] = (struct expr *)0 249 } 250 } 251 }; 252 253 // PR6955 254 255 struct ds { 256 struct { 257 struct { 258 unsigned int a; 259 }; 260 unsigned int b; 261 struct { 262 unsigned int c; 263 }; 264 }; 265 }; 266 267 // C1X lookup-based anonymous member init cases 268 struct ds ds0 = { 269 { { 270 .a = 1 // expected-note{{previous initialization is here}} 271 } }, 272 .a = 2, // expected-warning{{initializer overrides prior initialization of this subobject}} 273 .b = 3 274 }; 275 struct ds ds1 = { .c = 0 }; 276 struct ds ds2 = { { { 277 .a = 0, 278 .b = 1 // expected-error{{field designator 'b' does not refer to any field}} 279 } } }; 280 281 // Check initializer override warnings overriding a character in a string 282 struct overwrite_string_struct { 283 char L[6]; 284 int M; 285 } overwrite_string[] = { 286 { { "foo" }, 1 }, // expected-note {{previous initialization is here}} 287 [0].L[2] = 'x' // expected-warning{{initializer overrides prior initialization of this subobject}} 288 }; 289 struct overwrite_string_struct2 { 290 char L[6]; 291 int M; 292 } overwrite_string2[] = { 293 { { "foo" }, 1 }, 294 [0].L[4] = 'x' // no-warning 295 }; 296
