| // Copyright (c) 2023, 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. | |
| extension on Object { | |
| int get q => 42; | |
| } | |
| void main() { | |
| switch (Object() as dynamic) { | |
| case Object(q: var x): print(x); | |
| } | |
| } |