// 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 In cases where the context type is not specific enough to
 * disambiguate, we could make it an error instead of defaulting to map.
 * @description Checks that {...?null} collection type is detected correctly
 * @compile-error
 * @author iarkh@unipro.ru
 */

main() {
  var res = {...?null};
}