// 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.

// @dart = 2.9

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


main() {
  var s = [1, 2, 3];
  var m = {1:1, 2: 2};
  var x1 = <int, int>{...s, ...m};       //# 01: compile-time error
  var x2 = <int, int>{...?s, ...?m};     //# 02: compile-time error
}