| /* |
| * 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 double. |
| * @description Checks that a user-defined interface cannot extend double. |
| * @compile-error |
| * @author iefremov |
| * @reviewer rodionov |
| */ |
| |
| abstract class A extends double {} |
| |
| class B implements A {} |
| |
| main() { |
| try { |
| new B(); |
| } catch(x) {} |
| } |
