noexcept and constexpr applied to <mutex>.

llvm-svn: 160604

1 files changed, 8 insertions, 1 deletions

diff --git a/libcxx/test/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp b/libcxx/test/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp
index dc4a07405ff..6995f064833 100644
--- a/libcxx/test/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp
+++ b/libcxx/test/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp
@@ -11,11 +11,18 @@
 
 // struct once_flag;
 
-// constexpr once_flag();
+// constexpr once_flag() noexcept;
 
 #include <mutex>
 
 int main()
 {
+    {
     std::once_flag f;
+    }
+#ifndef _LIBCPP_HAS_NO_CONSTEXPR
+    {
+    constexpr std::once_flag f;
+    }
+#endif
 }