1 | // RUN: %clang_cc1 -std=gnu99 -fsyntax-only -pedantic -verify %s |
2 | // RUN: %clang_cc1 -std=gnu99 -fsyntax-only -Wgnu -Wc11-extensions -verify %s |
3 | // REQUIRES: LP64 |
4 | |
5 | extern int foof() = 1; // expected-error{{illegal initializer (only variables can be initialized)}} |
6 | |
7 | static int x, y, z; |
8 | |
9 | static int ary[] = { x, y, z }; // expected-error{{initializer element is not a compile-time constant}} |
10 | int ary2[] = { x, y, z }; // expected-error{{initializer element is not a compile-time constant}} |
11 | |
12 | extern int fileScopeExtern[3] = { 1, 3, 5 }; // expected-warning{{'extern' variable has an initializer}} |
13 | |
14 | static long ary3[] = { 1, "abc", 3, 4 }; // expected-warning{{incompatible pointer to integer conversion initializing 'long' with an expression of type 'char [4]'}} |
15 | |
16 | void func() { |
17 | int x = 1; |
18 | |
19 | typedef int TInt = 1; // expected-error{{illegal initializer (only variables can be initialized)}} |
20 | |
21 | int xComputeSize[] = { 1, 3, 5 }; |
22 | |
23 | int x3[x] = { 1, 2 }; // expected-error{{variable-sized object may not be initialized}} |
24 | |
25 | int x4 = { 1, 2 }; // expected-warning{{excess elements in scalar initializer}} |
26 | |
27 | int y[4][3] = { |
28 | { 1, 3, 5 }, |
29 | { 2, 4, 6 }, |
30 | { 3, 5, 7 }, |
31 | }; |
32 | |
33 | int y2[4][3] = { |
34 | 1, 3, 5, 2, 4, 6, 3, 5, 7 |
35 | }; |
36 | |
37 | int y3[4][3] = { |
38 | { 1, 3, 5 }, |
39 | { 2, 4, 6 }, |
40 | { 3, 5, 7 }, |
41 | { 4, 6, 8 }, |
42 | { 5 }, // expected-warning{{excess elements in array initializer}} |
43 | }; |
44 | |
45 | struct threeElements { |
46 | int a,b,c; |
47 | } z = { 1 }; |
48 | |
49 | struct threeElements *p = 7; // expected-warning{{incompatible integer to pointer conversion initializing 'struct threeElements *' with an expression of type 'int'}} |
50 | |
51 | extern int blockScopeExtern[3] = { 1, 3, 5 }; // expected-error{{'extern' variable cannot have an initializer}} |
52 | |
53 | static long x2[3] = { 1.0, |
54 | "abc", // expected-warning{{incompatible pointer to integer conversion initializing 'long' with an expression of type 'char [4]'}} |
55 | 5.8 }; // expected-warning {{implicit conversion from 'double' to 'long' changes value from 5.8 to 5}} |
56 | } |
57 | |
58 | void test() { |
59 | int y1[3] = { |
60 | { 1, 2, 3 } // expected-warning{{excess elements in scalar initializer}} |
61 | }; |
62 | int y3[4][3] = { |
63 | { 1, 3, 5 }, |
64 | { 2, 4, 6 }, |
65 | { 3, 5, 7 }, |
66 | { 4, 6, 8 }, |
67 | { }, // expected-warning{{use of GNU empty initializer extension}} expected-warning{{excess elements in array initializer}} |
68 | }; |
69 | int y4[4][3] = { |
70 | { 1, 3, 5, 2 }, // expected-warning{{excess elements in array initializer}} |
71 | { 4, 6 }, |
72 | { 3, 5, 7 }, |
73 | { 4, 6, 8 }, |
74 | }; |
75 | } |
76 | |
77 | void allLegalAndSynonymous() { |
78 | short q[4][3][2] = { |
79 | { 1 }, |
80 | { 2, 3 }, |
81 | { 4, 5, 6 } |
82 | }; |
83 | short q2[4][3][2] = { |
84 | { 1, 0, 0, 0, 0, 0 }, |
85 | { 2, 3, 0, 0, 0, 0 }, |
86 | { 4, 5, 6 } |
87 | }; |
88 | short q3[4][3][2] = { |
89 | { |
90 | { 1 }, |
91 | }, |
92 | { |
93 | { 2, 3 }, |
94 | }, |
95 | { |
96 | { 4, 5 }, |
97 | { 6 }, |
98 | }, |
99 | }; |
100 | } |
101 | |
102 | void legal() { |
103 | short q[][3][2] = { |
104 | { 1 }, |
105 | { 2, 3 }, |
106 | { 4, 5, 6 } |
107 | }; |
108 | int q_sizecheck[(sizeof(q) / sizeof(short [3][2])) == 3? 1 : -1]; |
109 | } |
110 | |
111 | unsigned char asso_values[] = { 34 }; |
112 | int legal2() { |
113 | return asso_values[0]; |
114 | } |
115 | |
116 | void illegal() { |
117 | short q2[4][][2] = { // expected-error{{array has incomplete element type 'short [][2]'}} |
118 | { 1, 0, 0, 0, 0, 0 }, |
119 | { 2, 3, 0, 0, 0, 0 }, |
120 | { 4, 5, 6 } |
121 | }; |
122 | short q3[4][3][] = { // expected-error{{array has incomplete element type 'short []'}} |
123 | { |
124 | { 1 }, |
125 | }, |
126 | { |
127 | { 2, 3 }, |
128 | }, |
129 | { |
130 | { 4, 5 }, |
131 | { 6 }, |
132 | }, |
133 | }; |
134 | int a[][] = { 1, 2 }; // expected-error{{array has incomplete element type 'int []'}} |
135 | } |
136 | |
137 | typedef int AryT[]; |
138 | |
139 | void testTypedef() |
140 | { |
141 | AryT a = { 1, 2 }, b = { 3, 4, 5 }; |
142 | int a_sizecheck[(sizeof(a) / sizeof(int)) == 2? 1 : -1]; |
143 | int b_sizecheck[(sizeof(b) / sizeof(int)) == 3? 1 : -1]; |
144 | } |
145 | |
146 | static char const xx[] = "test"; |
147 | int xx_sizecheck[(sizeof(xx) / sizeof(char)) == 5? 1 : -1]; |
148 | static char const yy[5] = "test"; |
149 | static char const zz[3] = "test"; // expected-warning{{initializer-string for char array is too long}} |
150 | |
151 | void charArrays() { |
152 | static char const test[] = "test"; |
153 | int test_sizecheck[(sizeof(test) / sizeof(char)) == 5? 1 : -1]; |
154 | static char const test2[] = { "weird stuff" }; |
155 | static char const test3[] = { "test", "excess stuff" }; // expected-warning{{excess elements in char array initializer}} |
156 | |
157 | char* cp[] = { "Hello" }; |
158 | |
159 | char c[] = { "Hello" }; |
160 | int l[sizeof(c) == 6 ? 1 : -1]; |
161 | |
162 | int i[] = { "Hello "}; // expected-warning{{incompatible pointer to integer conversion initializing 'int' with an expression of type 'char [7]'}} |
163 | char c2[] = { "Hello", "Good bye" }; //expected-warning{{excess elements in char array initializer}} |
164 | |
165 | int i2[1] = { "Hello" }; //expected-warning{{incompatible pointer to integer conversion initializing 'int' with an expression of type 'char [6]'}} |
166 | char c3[5] = { "Hello" }; |
167 | char c4[4] = { "Hello" }; //expected-warning{{initializer-string for char array is too long}} |
168 | |
169 | int i3[] = {}; //expected-warning{{zero size arrays are an extension}} expected-warning{{use of GNU empty initializer extension}} |
170 | } |
171 | |
172 | void variableArrayInit() { |
173 | int a = 4; |
174 | char strlit[a] = "foo"; //expected-error{{variable-sized object may not be initialized}} |
175 | int b[a] = { 1, 2, 4 }; //expected-error{{variable-sized object may not be initialized}} |
176 | } |
177 | |
178 | // Pure array tests |
179 | float r1[10] = {{7}}; //expected-warning{{braces around scalar initializer}} |
180 | float r2[] = {{8}}; //expected-warning{{braces around scalar initializer}} |
181 | char r3[][5] = {1,2,3,4,5,6}; |
182 | int r3_sizecheck[(sizeof(r3) / sizeof(char[5])) == 2? 1 : -1]; |
183 | char r3_2[sizeof r3 == 10 ? 1 : -1]; |
184 | float r4[1][2] = {1,{2},3,4}; //expected-warning{{braces around scalar initializer}} expected-warning{{excess elements in array initializer}} |
185 | char r5[][5] = {"aa", "bbb", "ccccc"}; |
186 | char r6[sizeof r5 == 15 ? 1 : -1]; |
187 | const char r7[] = "zxcv"; |
188 | char r8[5] = "5char"; |
189 | char r9[5] = "6chars"; //expected-warning{{initializer-string for char array is too long}} |
190 | unsigned char r10[] = __extension__ (_Generic(0, int: (__extension__ "foo" ))); |
191 | int r11[0] = {}; //expected-warning{{zero size arrays are an extension}} expected-warning{{use of GNU empty initializer extension}} |
192 | |
193 | // Some struct tests |
194 | void autoStructTest() { |
195 | struct s1 {char a; char b;} t1; |
196 | struct s2 {struct s1 c;} t2 = { t1 }; |
197 | // The following is a less than great diagnostic (though it's on par with EDG). |
198 | struct s1 t3[] = {t1, t1, "abc", 0}; //expected-warning{{incompatible pointer to integer conversion initializing 'char' with an expression of type 'char [4]'}} |
199 | int t4[sizeof t3 == 6 ? 1 : -1]; |
200 | } |
201 | struct foo { int z; } w; |
202 | int bar (void) { |
203 | struct foo z = { w }; //expected-error{{initializing 'int' with an expression of incompatible type 'struct foo'}} |
204 | return z.z; |
205 | } |
206 | struct s3 {void (*a)(void);} t5 = {autoStructTest}; |
207 | struct {int a; int b[];} t6 = {1, {1, 2, 3}}; // expected-warning{{flexible array initialization is a GNU extension}} \ |
208 | // expected-note{{initialized flexible array member 'b' is here}} |
209 | union {char a; int b;} t7[] = {1, 2, 3}; |
210 | int t8[sizeof t7 == (3*sizeof(int)) ? 1 : -1]; |
211 | |
212 | struct bittest{int : 31, a, :21, :12, b;}; |
213 | struct bittest bittestvar = {1, 2, 3, 4}; //expected-warning{{excess elements in struct initializer}} |
214 | |
215 | // Not completely sure what should happen here... |
216 | int u1 = {}; //expected-warning{{use of GNU empty initializer extension}} expected-error{{scalar initializer cannot be empty}} |
217 | int u2 = {{3}}; //expected-warning{{too many braces around scalar initializer}} |
218 | |
219 | // PR2362 |
220 | void varArray() { |
221 | int c[][x] = { 0 }; //expected-error{{variable-sized object may not be initialized}} |
222 | } |
223 | |
224 | // PR2151 |
225 | void emptyInit() {struct {} x[] = {6};} //expected-warning{{empty struct is a GNU extension}} \ |
226 | // expected-error{{initializer for aggregate with no elements}} |
227 | |
228 | void noNamedInit() { |
229 | struct {int:5;} x[] = {6}; //expected-error{{initializer for aggregate with no elements}} \ |
230 | // expected-warning {{struct without named members is a GNU extension}} |
231 | } |
232 | struct {int a; int:5;} noNamedImplicit[] = {1,2,3}; |
233 | int noNamedImplicitCheck[sizeof(noNamedImplicit) == 3 * sizeof(*noNamedImplicit) ? 1 : -1]; |
234 | |
235 | |
236 | // ptrs are constant |
237 | struct soft_segment_descriptor { |
238 | long ssd_base; |
239 | }; |
240 | static int dblfault_tss; |
241 | |
242 | union uniao { int ola; } xpto[1]; |
243 | |
244 | struct soft_segment_descriptor gdt_segs[] = { |
245 | {(long) &dblfault_tss}, |
246 | { (long)xpto}, |
247 | }; |
248 | |
249 | static void sppp_ipv6cp_up(); |
250 | const struct {} ipcp = { sppp_ipv6cp_up }; //expected-warning{{empty struct is a GNU extension}} \ |
251 | // expected-warning{{excess elements in struct initializer}} |
252 | |
253 | struct _Matrix { union { float m[4][4]; }; }; //expected-warning{{anonymous unions are a C11 extension}} |
254 | typedef struct _Matrix Matrix; |
255 | void test_matrix() { |
256 | const Matrix mat1 = { |
257 | { { 1.0f, 2.0f, 3.0f, 4.0f, |
258 | 5.0f, 6.0f, 7.0f, 8.0f, |
259 | 9.0f, 10.0f, 11.0f, 12.0f, |
260 | 13.0f, 14.0f, 15.0f, 16.0f } } |
261 | }; |
262 | |
263 | const Matrix mat2 = { |
264 | 1.0f, 2.0f, 3.0f, 4.0f, |
265 | 5.0f, 6.0f, 7.0f, 8.0f, |
266 | 9.0f, 10.0f, 11.0f, 12.0f, |
267 | 13.0f, 14.0f, 15.0f, 16.0f |
268 | }; |
269 | } |
270 | |
271 | char badchararray[1] = { badchararray[0], "asdf" }; // expected-warning {{excess elements in array initializer}} expected-error {{initializer element is not a compile-time constant}} |
272 | |
273 | // Test the GNU extension for initializing an array from an array |
274 | // compound literal. PR9261. |
275 | typedef int int5[5]; |
276 | int a1[5] = (int[]){1, 2, 3, 4, 5}; // expected-warning{{initialization of an array of type 'int [5]' from a compound literal of type 'int [5]' is a GNU extension}} |
277 | int a2[5] = (int[5]){1, 2, 3, 4, 5}; // expected-warning{{initialization of an array of type 'int [5]' from a compound literal of type 'int [5]' is a GNU extension}} |
278 | int a3[] = ((int[]){1, 2, 3, 4, 5}); // expected-warning{{initialization of an array of type 'int []' from a compound literal of type 'int [5]' is a GNU extension}} |
279 | int a4[] = (int[5]){1, 2, 3, 4, 5}; // expected-warning{{initialization of an array of type 'int []' from a compound literal of type 'int [5]' is a GNU extension}} |
280 | int a5[] = (int5){1, 2, 3, 4, 5}; // expected-warning{{initialization of an array of type 'int []' from a compound literal of type 'int5' (aka 'int [5]') is a GNU extension}} |
281 | |
282 | int a6[5] = (int[]){1, 2, 3}; // expected-error{{cannot initialize array of type 'int [5]' with array of type 'int [3]'}} |
283 | |
284 | int nonconst_value(); |
285 | int a7[5] = (int[5]){ 1, |
286 | 2, |
287 | 3, |
288 | 4, |
289 | nonconst_value() // expected-error{{initializer element is not a compile-time constant}} |
290 | }; |
291 | |
292 | // <rdar://problem/10636946> |
293 | __attribute__((weak)) const unsigned int test10_bound = 10; |
294 | char test10_global[test10_bound]; // expected-error {{variable length array declaration not allowed at file scope}} |
295 | void test10() { |
296 | char test10_local[test10_bound] = "help"; // expected-error {{variable-sized object may not be initialized}} |
297 | } |
298 | |