gcc/testsuite/gcc.dg/torture/pr112639.c

   1 /* PR middle-end/112639 */
   2 /* { dg-do run } */
   3
   4 unsigned long long b = 0;
   5
   6 int
   7 foo (void)
   8 {
   9   return __builtin_clzg (b++, __SIZEOF_LONG_LONG__ * __CHAR_BIT__);
  10 }
  11
  12 int
  13 bar (void)
  14 {
  15   return __builtin_ctzg (b++, __SIZEOF_LONG_LONG__ * __CHAR_BIT__);
  16 }
  17
  18 int
  19 main ()
  20 {
  21   if (foo () != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ || b != 1)
  22     __builtin_abort ();
  23   if (foo () != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 1 || b != 2)
  24     __builtin_abort ();
  25   if (foo () != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 2 || b != 3)
  26     __builtin_abort ();
  27   b = 0;
  28   if (bar () != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ || b != 1)
  29     __builtin_abort ();
  30   if (bar () != 0 || b != 2)
  31     __builtin_abort ();
  32   if (bar () != 1 || b != 3)
  33     __builtin_abort ();
  34 }