SystemExit.new

static VALUE
exit_initialize(int argc, VALUE *argv, VALUE exc)
{
    VALUE status;
    if (argc > 0) {
        status = *argv;

        switch (status) {
          case Qtrue:
            status = INT2FIX(EXIT_SUCCESS);
            ++argv;
            --argc;
            break;
          case Qfalse:
            status = INT2FIX(EXIT_FAILURE);
            ++argv;
            --argc;
            break;
          default:
            status = rb_check_to_int(status);
            if (NIL_P(status)) {
                status = INT2FIX(EXIT_SUCCESS);
            }
            else {
#if EXIT_SUCCESS != 0
                if (status == INT2FIX(0))
                    status = INT2FIX(EXIT_SUCCESS);
#endif
                ++argv;
                --argc;
            }
            break;
        }
    }
    else {
        status = INT2FIX(EXIT_SUCCESS);
    }
    rb_call_super(argc, argv);
    rb_ivar_set(exc, id_status, status);
    return exc;
}