| //===----------------------------------------------------------------------===// | 
 | // | 
 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | 
 | // See https://llvm.org/LICENSE.txt for license information. | 
 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | 
 | // | 
 | //===----------------------------------------------------------------------===// | 
 |  | 
 | // <mutex> | 
 |  | 
 | // class mutex; | 
 |  | 
 | // mutex(const mutex&) = delete; | 
 |  | 
 | #include <mutex> | 
 |  | 
 | int main(int, char**) | 
 | { | 
 |     std::mutex m0; | 
 |     std::mutex m1(m0); | 
 |  | 
 |   return 0; | 
 | } |