| // 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 A check of the form [e == null] or of the form [e is Null] where |
| /// [e] has static type [T] promotes the type of [e] to [Null] in the [true] |
| /// continuation, and to [NonNull(T)] in the [false] continuation. |
| /// |
| /// @description Check that [e] is promoted to [Null] in the [true] condition. |
| /// Test pre-NNBD legacy types |
| /// @author sgrekhov@unipro.ru |
| |
| // Requirements=nnbd-weak |
| import "legacy_lib.dart"; |
| |
| dynamic init() => null; |
| |
| main() { |
| A? a = init(); |
| if (a is Null) { |
| a.foo(); |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
| |
| if (a == null) { |
| a.foo(); |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
| } |
