| // 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 |
| class A { |
| final x = null; |
| |
| const A.named1() sync* {} |
| |
| const A.named2() : x = new Object(); |
| } |
| |
| external foo(String x) { |
| return x.length; |
| } |
| |
| class B {} |
| |
| class C { |
| B b; |
| } |
| |
| abstract class AbstractClass { |
| const AbstractClass.id(); |
| } |
| |
| m() { |
| const AbstractClass.id(); |
| (new C()?.b ??= new B()).b; |
| } |
| |
| main() {} |
