1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <mutex>
10 
11 // template <class Mutex> class unique_lock;
12 
13 // unique_lock(mutex_type& m, adopt_lock_t);
14 
15 #include <cassert>
16 #include <memory>
17 #include <mutex>
18 
19 #include "checking_mutex.h"
20 
21 int main(int, char**) {
22   checking_mutex m;
23   m.lock();
24   m.last_try = checking_mutex::none;
25   std::unique_lock<checking_mutex> lk(m, std::adopt_lock_t());
26   assert(m.last_try == checking_mutex::none);
27   assert(lk.mutex() == std::addressof(m));
28   assert(lk.owns_lock());
29 
30   return 0;
31 }
32