// 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 The [??] operator only evaluates its second operand if the first
/// evaluates to [null], and the second operand must be a potentially constant
/// expression.
/// @description Checks that compile-time exception is thrown if the first
/// operand of [??] operator is [null] and the second one is incorrect in the
/// constant expression.
/// @author iarkh@unipro.ru


main() {
  const String s1 = null ?? (null as String).length;
//                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  const int s2 = null ?? (null as String).length;
//                       ^^^^^^^^^^^^^^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  const s3 = null ?? (null as String).length;
//                   ^^^^^^^^^^^^^^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

}