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 // class mutex; 15 16 // mutex(); 17 18 #include <mutex> 19 #include <type_traits> 20 main()21int main() 22 { 23 static_assert(std::is_nothrow_default_constructible<std::mutex>::value, ""); 24 std::mutex m; 25 } 26