| // 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. |
| |
| // @dart = 2.9 |
| |
| /// Casts in constants correctly substitute type variables. |
| |
| class A { |
| const A(); |
| } |
| |
| class B implements A { |
| const B(); |
| } |
| |
| class M<T extends A> { |
| final T a; |
| const M(dynamic t) : a = t; // adds implicit cast `as T` |
| } |
| |
| class N<S extends A> extends M<S> { |
| const N(dynamic t) : super(t); |
| } |
| |
| main() { |
| print(const N<B>(const B())); |
| } |
