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 // This test requires the dylib support introduced in D68480
13 // XFAIL: with_system_cxx_lib=macosx10.15
14 // XFAIL: with_system_cxx_lib=macosx10.14
15 // XFAIL: with_system_cxx_lib=macosx10.13
16 // XFAIL: with_system_cxx_lib=macosx10.12
17 // XFAIL: with_system_cxx_lib=macosx10.11
18 // XFAIL: with_system_cxx_lib=macosx10.10
19 // XFAIL: with_system_cxx_lib=macosx10.9
20 
21 // <latch>
22 
23 #include <latch>
24 #include <cassert>
25 
26 #include "test_macros.h"
27 
28 int main(int, char**)
29 {
30   std::latch l(1);
31 
32   l.count_down();
33   bool const b = l.try_wait();
34   assert(b);
35 
36   return 0;
37 }
38