// Copyright (c) 2012, 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. // Check possibly still unresolved upper bounds of default factory class. abstract class A { factory A() = _AImpl; } class Moo extends Foo {} class Foo extends Bar {} class Bar {} class _AImpl implements A { factory _AImpl() { return _AImpl._(); } _AImpl._(); } main() { var result = new A(); }