1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // UNSUPPORTED: libcpp-has-no-threads
10 
11 // <mutex>
12 
13 // class recursive_mutex;
14 
15 // recursive_mutex();
16 
17 #include <mutex>
18 
19 int main(int, char**)
20 {
21     std::recursive_mutex m;
22 
23   return 0;
24 }
25