gcc/testsuite/gcc.c-torture/execute/pr97325.c

/* PR tree-optimization/97325 */

unsigned long long
foo (unsigned long long c)
{
  return c ? __builtin_ffs (-(unsigned short) c) : 0;
}

int
main ()
{
  if (foo (2) != 2)
    __builtin_abort ();
  return 0;
}