/*
 * 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 From the Unified collection Spec:
 * A spreadElement starting with [...] is a constant element if its expression
 * is constant and it evaluates to a constant List, Set or Map instance
 * originally created by a list, set or map literal. It is a potentially
 * constant element if the expression is a potentially constant expression.
 * @description: Checks that constant map spread element can be potentially
 * constant map.
 * @compile-error
 * @author iarkh@unipro.ru
 */

class MyClass {
  final String a;
  const MyClass(Object o) : a = o as String;
}

main() {
  const Map m = {...(MyClass(12345) is MyClass ? {1: 1} : {2: 2})};
}