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      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: libcpp-has-no-threads
     11 // UNSUPPORTED: c++98, c++03, c++11
     12 
     13 // <shared_mutex>
     14 
     15 // template <class Mutex> class shared_lock;
     16 
     17 // shared_lock(shared_lock&& u);
     18 
     19 #include <shared_mutex>
     20 #include <cassert>
     21 #include "nasty_containers.hpp"
     22 
     23 int main()
     24 {
     25     {
     26     typedef std::shared_timed_mutex M;
     27     M m;
     28     std::shared_lock<M> lk0(m);
     29     std::shared_lock<M> lk = std::move(lk0);
     30     assert(lk.mutex() == std::addressof(m));
     31     assert(lk.owns_lock() == true);
     32     assert(lk0.mutex() == nullptr);
     33     assert(lk0.owns_lock() == false);
     34     }
     35     {
     36     typedef nasty_mutex M;
     37     M m;
     38     std::shared_lock<M> lk0(m);
     39     std::shared_lock<M> lk = std::move(lk0);
     40     assert(lk.mutex() == std::addressof(m));
     41     assert(lk.owns_lock() == true);
     42     assert(lk0.mutex() == nullptr);
     43     assert(lk0.owns_lock() == false);
     44     }
     45 }
     46