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, c++17 11 12 // XFAIL: availability-synchronization_library-missing 13 14 // <latch> 15 16 #include <latch> 17 #include <cassert> 18 19 #include "test_macros.h" 20 21 int main(int, char**) 22 { 23 std::latch l(1); 24 25 l.count_down(); 26 bool const b = l.try_wait(); 27 assert(b); 28 29 return 0; 30 } 31