| /* |
| * 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 It is an error to read a field or tear off a method from an |
| * expression whose type is potentially nullable and not dynamic, except for the |
| * methods and fields on Object. |
| * |
| * @description Check that it is no compile-time error to read a field or tear |
| * off a method from an expression whose type is potentially nullable if they |
| * are methods, setters, getters, and operators on Object. Test that methods of |
| * Object are allowed for the type <T extends F?>, where F is a function type |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| // Requirements=nnbd-strong |
| import "../../Utils/expect.dart"; |
| |
| typedef void Foo(); |
| |
| void foo() {} |
| void bar() {} |
| |
| class C<T extends Foo?> { |
| T a; |
| C(this.a); |
| |
| test() { |
| Expect.isNotNull(a.toString); |
| } |
| } |
| |
| main() { |
| C<Foo?> c = new C<Foo?>(foo); |
| c.test(); |
| } |