modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr61725.c (about)

     1  /* PR tree-optimization/61725 */
     2  
     3  int
     4  main ()
     5  {
     6    int x;
     7    for (x = -128; x <= 128; x++)
     8      {
     9        int a = __builtin_ffs (x);
    10        if (x == 0 && a != 0)
    11          __builtin_abort ();
    12      }
    13    return 0;
    14  }