// 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 To infer the type of element:
/// ...
/// If element is a spreadElement with expression e1:
/// ...
/// If P is Set<Ps> then let S be the inferred type of e1 in context Iterable<Ps>:
/// ...
/// Otherwise it is an error
///
/// @description Checks that otherwise it is an error
/// @author sgrekhov@unipro.ru


main() {
  List? s = [1, 2, 3];
  Map? m = {1:1, 2: 2};
  var x1 = <int>{...s, ...m};
//                        ^
// [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
// [cfe] Unexpected type 'Map<dynamic, dynamic>' of a spread.  Expected 'dynamic' or an Iterable.
  var x2 = <int>{...?s, ...?m};
//                          ^
// [analyzer] unspecified
// [cfe] unspecified
}