| /* |
| * Copyright (c) 2019, 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 type system is extended with a notion of a legacy type |
| * operator. For every type T, there is an additional type T* which is the |
| * legacy version of the type. There is no surface syntax for legacy types, and |
| * implementations should display the legacy type T* in the same way that they |
| * would display the type T, except in so far as it is useful to communicate to |
| * programmers for the purposes of error messages that the type originates in |
| * unmigrated code. |
| * |
| * @description Check that all fields of legacy type T* are nullable. |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| import "legacy_library_lib.dart"; |
| |
| class B extends A with Mx { |
| } |
| |
| main() { |
| B b = new B(); |
| C<B> c = new C(b); |
| c.x.text = null; |
| c.x.iMx = null; |
| } |
