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()21 int main()
22 {
23     static_assert(std::is_nothrow_default_constructible<std::mutex>::value, "");
24     std::mutex m;
25 }
26