[libc++] Implementation of C++20's P1135R6 for libcxx
Differential Revision: https://reviews.llvm.org/D68480
diff --git a/libcxx/test/std/thread/thread.latch/try_wait.pass.cpp b/libcxx/test/std/thread/thread.latch/try_wait.pass.cpp
new file mode 100644
index 0000000..7284849
--- /dev/null
+++ b/libcxx/test/std/thread/thread.latch/try_wait.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: libcpp-has-no-threads
+// UNSUPPORTED: c++98, c++03, c++11
+
+// <latch>
+
+#include <latch>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+ std::latch l(1);
+
+ l.count_down();
+ bool const b = l.try_wait();
+ assert(b);
+
+ return 0;
+}