1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <shared_mutex>
11
12// template <class Mutex> class shared_lock;
13
14// shared_lock(shared_lock const&) = delete;
15
16#include <shared_mutex>
17
18#if _LIBCPP_STD_VER > 11
19std::shared_timed_mutex m;
20#endif  // _LIBCPP_STD_VER > 11
21
22int main()
23{
24#if _LIBCPP_STD_VER > 11
25    std::shared_lock<std::shared_timed_mutex> lk0(m);
26    std::shared_lock<std::shared_timed_mutex> lk = lk0;
27#else
28#   error
29#endif  // _LIBCPP_STD_VER > 11
30}
31