/*
 * 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 map cannot have recurrent
 * references.
 * @compile-error
 * @author iarkh@unipro.ru
 */

main() {
  Map m1 = {...m2};
  Map m2 = {...m1};
}