gcc/testsuite/gcc.dg/pr83609.c

   1 /* PR middle-end/83609 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -fno-tree-forwprop -fno-tree-ccp -fno-tree-fre -fno-tree-pre -fno-code-hoisting" } */
   4
   5 #if __SIZEOF_LONG_LONG__ == 2 * __SIZEOF_FLOAT__
   6 _Complex float
   7 foo (void)
   8 {
   9   _Complex float c;
  10   *((unsigned long long *)&c) = 0x123456789abcdef0ULL;
  11   return c;
  12 }
  13
  14 int
  15 main ()
  16 {
  17   union { _Complex float c; unsigned long long l; } u;
  18   u.c = foo ();
  19   if (u.l != 0x123456789abcdef0ULL)
  20     __builtin_abort ();
  21   return 0;
  22 }
  23 #else
  24 int
  25 main ()
  26 {
  27   return 0;
  28 }
  29 #endif