| // Copyright (c) 2020, 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 NORM relation defines the canonical representative of classes |
| * of equivalent types... |
| * This is based on the following equations: |
| * T*? == T? |
| * |
| * @description Checks that T*? == T? |
| * |
| * @author sgrekhov@unipro.ru |
| */ |
| // Requirements=nnbd-weak |
| import 'opted_in_lib.dart'; |
| import 'opted_out_lib.dart'; |
| |
| class C extends LE<String> implements A<String?> {} |
| |
| main() { |
| new C(); |
| } |
