/*
 * Copyright (c) 2015, 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, mix in or implement Null.
 * @description Checks that Null cannot be mixed in. Test class C = M form
 * @compile-error
 * @author sgrekhov@unipro.ru
 */

class A {}

class C = A with Null;

main() {
  try {
    new C();
  } catch (e) {
  }
}