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& operator=(shared_lock const&) = delete;
15
16#include <shared_mutex>
17
18#if _LIBCPP_STD_VER > 11
19
20std::shared_timed_mutex m0;
21std::shared_timed_mutex m1;
22
23#endif  // _LIBCPP_STD_VER > 11
24
25int main()
26{
27#if _LIBCPP_STD_VER > 11
28    std::shared_lock<std::shared_timed_mutex> lk0(m0);
29    std::shared_lock<std::shared_timed_mutex> lk1(m1);
30    lk1 = lk0;
31#else
32#   error
33#endif  // _LIBCPP_STD_VER > 11
34}
35