// 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 (Unified collections)
/// It is a compile-time error if:
/// ...
/// A spread element in a list or set has a static type that implements
/// [Iterable<T>] for some [T] and [T] is not assignable to the element type of
/// the list.
/// @description Checks that compile error appears if [T] is not assignable to
/// the element type.
/// @author iarkh@unipro.ru


main() {
  var strings = <String>[];
  var res = <int>{11, ...strings};
//                       ^
// [analyzer] unspecified
// [cfe] unspecified
}