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 19 std::mutex m0; 20 std::mutex m1; 21 22 int 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
