| //===----------------------------------------------------------------------===// |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| //===----------------------------------------------------------------------===// |
| // void swap(weak_ptr& r); |
| std::shared_ptr<A> p1(new A); |
| assert(w1.use_count() == 1); |
| assert(w1.use_count() == 0); |
| assert(p1.use_count() == 1); |