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 12 // <mutex> 13 14 // template <class Mutex> class unique_lock; 15 16 // unique_lock& operator=(unique_lock&& u); 17 18 #include <mutex> 19 #include <cassert> 20 21 std::mutex m0; 22 std::mutex m1; 23 24 int main() 25 { 26 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 27 std::unique_lock<std::mutex> lk0(m0); 28 std::unique_lock<std::mutex> lk1(m1); 29 lk1 = std::move(lk0); 30 assert(lk1.mutex() == &m0); 31 assert(lk1.owns_lock() == true); 32 assert(lk0.mutex() == nullptr); 33 assert(lk0.owns_lock() == false); 34 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 35 } 36
