/*
 * Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 * for details. All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */
/**
 * @assertion It is a compile-time error for a class to attempt to extend or implement Null.
 * @description Checks that Null cannot be extended by a class.
 * @compile-error
 * @author hlodvig
 * @reviewer iefremov
 */

class A extends Null {}

main() {
  try {
    new A();
  } catch (anything) {
  }
}