1  int a,b;
       2  main()
       3  {
       4    int c=-2;
       5    int d=0xfe;
       6    int e=a&1;
       7    int f=b&2;
       8    if ((char)(c|(e&f)) == (char)d)
       9      return 0;
      10    else
      11      abort();
      12  }