| /* |
| * 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 [NonNull(T)] in the [false] |
| * condition. Test pre-NNBD legacy types |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| import "legacy_library_lib.dart"; |
| |
| dynamic init(x) => x; |
| |
| main() { |
| A? a = init(A()); |
| if (a is Null) { |
| } else { |
| a.foo(); |
| A a1 = a; |
| } |
| |
| if (a == null) { |
| } else { |
| a.foo(); |
| A a1 = a; |
| } |
| } |
