modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/931228-1.c (about)

     1  f (x)
     2  {
     3    x &= 010000;
     4    x &= 007777;
     5    x ^= 017777;
     6    x &= 017770;
     7    return x;
     8  }
     9  
    10  main ()
    11  {
    12    if (f (-1) != 017770)
    13      abort ();
    14    exit (0);
    15  }