| // 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. |
| |
| // @dart = 2.9 |
| |
| // Verifies that references to deduplicated mixins are properly updated |
| // in types which are only accessible through constants. |
| // Regression test for https://github.com/flutter/flutter/issues/55345. |
| |
| class Diagnosticable {} |
| |
| class SomeClass with Diagnosticable {} |
| |
| class State<T> with Diagnosticable { |
| const State(); |
| } |
| |
| class StateA extends State { |
| const StateA(); |
| } |
| |
| class StateB extends State<int> { |
| const StateB(); |
| } |
| |
| const c1 = StateA(); |
| const c2 = StateB(); |
| |
| main() { |
| print(const [ |
| { |
| (c1 ?? c2): [ |
| [c1 ?? c2] |
| ] |
| }, |
| 'abc' |
| ]); |
| // No compile time or runtime errors. |
| } |