//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is dual licensed under the MIT and the University of Illinois Open // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // <mutex> // template <class Mutex> // class lock_guard // { // public: // typedef Mutex mutex_type; // ... // }; #include <mutex> #include <type_traits> int main() { static_assert((std::is_same<std::lock_guard<std::mutex>::mutex_type, std::mutex>::value), ""); }