1  static int rule_text_needs_stack_pop = 0;
       2  static int input_stack_pos = 1;
       3  
       4  f (void)
       5  {
       6    rule_text_needs_stack_pop = 1;
       7  
       8    if (input_stack_pos <= 0)
       9      return 1;
      10    else
      11      return 0;
      12  }
      13  
      14  main ()
      15  {
      16    f ();
      17    exit (0);
      18  }