| // 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 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 of incorrect type. |
| /// @author iarkh@unipro.ru |
| |
| |
| const int i = 1; |
| |
| const String nil = null; |
| const String str = "check me here"; |
| |
| main() { |
| const String s1 = 14 ?? "12345"; |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| const String s2 = i ?? "12345"; |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| const int i1 = "12345" ?? 12345; |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| const int res = str ?? 12345; |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| } |
