| /* |
| * Copyright (c) 2018, 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. |
| */ |
| /** |
| * @description Regression test for the issue 33701 (Dart does not throw error |
| * if function argument parameter extends [Null]). Checks that [typedef] |
| * parameter argument cannot be [Null] |
| * @Issue 33701 |
| * @author iarkh@unipro.ru |
| */ |
| |
| typedef F<X extends Null> = void Function(); |
| main() {} |
