| /* |
| * 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 It is an error if a mixin declaration or a class declaration with |
| * no generative constructors declares an instance variable with a potentially |
| * non-nullable type and no initializer expression unless the variable is marked |
| * with the late modifier. |
| * |
| * @description Check that it is an error if a mixin declaration with no |
| * generative constructors declares an instance variable with a potentially |
| * non-nullable type and no initializer expression. Test some type |
| * <T extends Object?> |
| * @author sgrekhov@unipro.ru |
| * @issue 40940 |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| // Requirements=nnbd-strong |
| class X {} |
| |
| mixin M<T extends Object?> on X { |
| T t; |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
| |
| class C extends X with M<String> { |
| } |
| |
| main() { |
| new C(); |
| } |
