| // 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 The [Null] class extends the [Object] class and declares no |
| * methods except those also declared by [Object]. |
| * @description Checks that invoking [toString] method on [null] does not yield |
| * error. |
| * @author hlodvig |
| * @issue 42219 |
| */ |
| |
| class A {} |
| |
| main() { |
| A? a = null; |
| var x = a.toString(); |
| } |