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 // UNSUPPORTED: c++98, c++03, c++11
11 
12 // <latch>
13 
14 #include <latch>
15 #include <thread>
16 
17 #include "test_macros.h"
18 
19 int main(int, char**)
20 {
21   std::latch l(2);
22 
23   l.count_down();
24   std::thread t([&](){
25     l.count_down();
26   });
27   l.wait();
28   t.join();
29 
30   return 0;
31 }
32