clang/test/Sema/compound-literal.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -pedantic %s
   2 // REQUIRES: LP64
   3
   4 struct foo { int a, b; };
   5
   6 static struct foo t = (struct foo){0,0};
   7 static struct foo t1 = __builtin_choose_expr(0, (struct foo){0,0}, (struct foo){0,0});
   8 static struct foo t2 = {0,0};
   9 static struct foo t3 = t2; // expected-error {{initializer element is not a compile-time constant}}
  10 static int *p = (int []){2,4};
  11 static int x = (int){1};
  12
  13 static int *p2 = (int []){2,x}; // expected-error {{initializer element is not a compile-time constant}}
  14 static long *p3 = (long []){2,"x"}; // expected-error {{incompatible pointer to integer conversion initializing 'long' with an expression of type 'char[2]'}}
  15
  16 typedef struct { } cache_t; // expected-warning{{empty struct is a GNU extension}}
  17 static cache_t clo_I1_cache = ((cache_t) { } ); // expected-warning{{use of GNU empty initializer extension}}
  18
  19 typedef struct Test {int a;int b;} Test;
  20 static Test* ll = &(Test) {0,0};
  21
  22 extern void fooFunc(struct foo *pfoo);
  23
  24 int main(int argc, char **argv) {
  25  int *l = (int []){x, *p, *p2};
  26  fooFunc(&(struct foo){ 1, 2 });
  27 }
  28
  29 struct Incomplete; // expected-note{{forward declaration of 'struct Incomplete'}}
  30 struct Incomplete* I1 = &(struct Incomplete){1, 2, 3}; // expected-error {{variable has incomplete type}}
  31 void IncompleteFunc(unsigned x) {
  32   struct Incomplete* I2 = (struct foo[x]){1, 2, 3}; // expected-error {{variable-sized object may not be initialized}}
  33   (void){1,2,3}; // expected-error {{variable has incomplete type}}
  34   (void(void)) { 0 }; // expected-error{{illegal initializer type 'void (void)'}}
  35 }
  36
  37 // PR6080
  38 int array[(sizeof(int[3]) == sizeof( (int[]) {0,1,2} )) ? 1 : -1];
  39
  40 // rdar://28949016 - Constant restriction should not apply to compound literals in blocks
  41 int (^block)(int) = ^(int i) {
  42   int *array = (int[]) {i, i + 2, i + 4};
  43   return array[i];
  44 };