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 // <shared_mutex> 13 14 // template <class Mutex> 15 // class shared_lock 16 // { 17 // public: 18 // typedef Mutex mutex_type; 19 // ... 20 // }; 21 22 #include <shared_mutex> 23 #include <type_traits> 24 main()25int main() 26 { 27 #if _LIBCPP_STD_VER > 11 28 static_assert((std::is_same<std::shared_lock<std::mutex>::mutex_type, 29 std::mutex>::value), ""); 30 #endif // _LIBCPP_STD_VER > 11 31 } 32