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