gcc/testsuite/gcc.c-torture/execute/pr33992.c

   1 extern void abort ();
   2
   3 void __attribute__((noinline))
   4 bar (unsigned long long i)
   5 {
   6   if (i)
   7     abort ();
   8 }
   9
  10 void __attribute__((always_inline))
  11 foo (unsigned long long *r)
  12 {
  13   int i;
  14
  15   for (i = 0; ; i++)
  16     if (*r & ((unsigned long long)1 << (63 - i)))
  17       break;
  18
  19   bar (i);
  20 }
  21
  22 void __attribute__((noinline))
  23 do_test (unsigned long long *r)
  24 {
  25   int i;
  26
  27   for (i = 0; i < 2; ++i)
  28     foo (r);
  29 }
  30
  31 int main()
  32 {
  33   unsigned long long r = 0x8000000000000001ull;
  34
  35   do_test (&r);
  36   return 0;
  37 }