gcc/testsuite/gcc.dg/torture/pr25654.c

   1 /* { dg-do run } */
   2
   3 extern void abort (void) __attribute__((noreturn));
   4
   5 union setconflict
   6 {
   7   short a[20];
   8   int b[10];
   9 };
  10
  11 int
  12 main ()
  13 {
  14   int sum = 0;
  15   {
  16     union setconflict a;
  17     short *c;
  18     c = a.a;
  19     asm ("": "=r" (c):"0" (c));
  20     *c = 0;
  21     asm ("": "=r" (c):"0" (c));
  22     sum += *c;
  23   }
  24   {
  25     union setconflict a;
  26     int *c;
  27     c = a.b;
  28     asm ("": "=r" (c):"0" (c));
  29     *c = 1;
  30     asm ("": "=r" (c):"0" (c));
  31     sum += *c;
  32   }
  33
  34   if (sum != 1)
  35     abort();
  36   return 0;
  37 }