modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/compile/abs.c (about)

     1  foo (a)
     2  {
     3    return __builtin_abs (a);
     4  }
     5  
     6  main ()
     7  {
     8    printf ("%d %d\n", foo (0x80000000), foo (12));
     9  }