| /* | |
| * 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 n/a | |
| * @description: Checks that spread elements in the set cannot have recurrent | |
| * references. | |
| * @compile-error | |
| * @author iarkh@unipro.ru | |
| */ | |
| // SharedOptions=--enable-experiment=constant-update-2018 | |
| main() { | |
| Set s1 = {...s2}; | |
| Set s2 = {...s1}; | |
| } |