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> 15// class lock_guard 16// { 17// public: 18// typedef Mutex mutex_type; 19// ... 20// }; 21 22#include <mutex> 23#include <type_traits> 24 25int main() 26{ 27 static_assert((std::is_same<std::lock_guard<std::mutex>::mutex_type, 28 std::mutex>::value), ""); 29} 30