1  int
       2  blah (int zzz)
       3  {
       4    int foo;
       5    if (zzz >= 0)
       6      return 1;
       7    foo = (zzz >= 0 ? (zzz) : -(zzz));
       8    return foo;
       9  }
      10  
      11  main()
      12  {
      13    if (blah (-1) != 1)
      14      abort ();
      15    else
      16      exit (0);
      17  }