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// <mutex> 11 12// template <class Mutex> class unique_lock; 13 14// unique_lock& operator=(unique_lock&& u); 15 16#include <mutex> 17#include <cassert> 18 19std::mutex m0; 20std::mutex m1; 21 22int main() 23{ 24#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 25 std::unique_lock<std::mutex> lk0(m0); 26 std::unique_lock<std::mutex> lk1(m1); 27 lk1 = std::move(lk0); 28 assert(lk1.mutex() == &m0); 29 assert(lk1.owns_lock() == true); 30 assert(lk0.mutex() == nullptr); 31 assert(lk0.owns_lock() == false); 32#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 33} 34