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 // UNSUPPORTED: c++98, c++03, c++11
11 // <shared_mutex>
12 
13 // template <class Mutex> class shared_lock;
14 
15 // shared_lock& operator=(shared_lock const&) = delete;
16 
17 #include <shared_mutex>
18 
19 std::shared_timed_mutex m0;
20 std::shared_timed_mutex m1;
21 
main()22 int main()
23 {
24     std::shared_lock<std::shared_timed_mutex> lk0(m0);
25     std::shared_lock<std::shared_timed_mutex> lk1(m1);
26     lk1 = lk0;
27 }
28