| // Copyright (c) 2017, 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. | |
| /*@testedFeatures=inference*/ | |
| library test; | |
| abstract class A { | |
| int? get x; | |
| } | |
| mixin class B { | |
| int? get x => 0; | |
| } | |
| class C extends A { | |
| var x; | |
| } | |
| class D extends B { | |
| var x; | |
| } | |
| class E implements A { | |
| var x; | |
| } | |
| class F implements B { | |
| var x; | |
| } | |
| class G extends Object with B { | |
| var x; | |
| } | |
| main() {} |