gcc/testsuite/gcc.c-torture/execute/pr78675.c

   1 /* PR tree-optimization/78675 */
   2
   3 long int a;
   4
   5 __attribute__((noinline, noclone)) long int
   6 foo (long int x)
   7 {
   8   long int b;
   9   while (a < 1)
  10     {
  11       b = a && x;
  12       ++a;
  13     }
  14   return b;
  15 }
  16
  17 int
  18 main ()
  19 {
  20   if (foo (0) != 0)
  21     __builtin_abort ();
  22   a = 0;
  23   if (foo (1) != 0)
  24     __builtin_abort ();
  25   a = 0;
  26   if (foo (25) != 0)
  27     __builtin_abort ();
  28   a = -64;
  29   if (foo (0) != 0)
  30     __builtin_abort ();
  31   a = -64;
  32   if (foo (1) != 0)
  33     __builtin_abort ();
  34   a = -64;
  35   if (foo (25) != 0)
  36     __builtin_abort ();
  37   return 0;
  38 }