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: no-threads
10 // UNSUPPORTED: c++03, c++11, c++14
11 
12 // <shared_mutex>
13 
14 // shared_lock
15 
16 // Make sure that the implicitly-generated CTAD works.
17 
18 #include <shared_mutex>
19 
20 #include "test_macros.h"
21 
main(int,char **)22 int main(int, char**) {
23   std::shared_mutex mutex;
24   {
25     std::shared_lock lock(mutex);
26     ASSERT_SAME_TYPE(decltype(lock), std::shared_lock<std::shared_mutex>);
27   }
28 
29   return 0;
30 }
31