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;
get8()128 int get8() { ++counter; return 8; }
129
test()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