LanguageFeatures/Spread-collections/StaticSemantic_A11_t06.dart

/*
 * 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 It is a compile-time error if:
 * A spread element in a map literal has a static type that is not [dynamic] and
 * not a subtype of [Map<Object, Object>].
 * @description Checks that compile error is thrown if null-aware spread element
 * in the constant map is not assignable to [Map] and is not [Null]
 * @author iarkh@unipro.ru
 */

main() {
  const x1 = [];
  const x2 = {1};
  const x3 = 100;
  const x4 = "check";

  const Map m1 = {...?x1};
// [error line 21, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  const Map m2 = {...?x2};
// [error line 25, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  const Map m3 = {...?x3};
// [error line 29, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  const Map m4 = {...?x4};
// [error line 33, column 0]
// [analyzer] unspecified
// [cfe] unspecified
}