From bea9fd14e33be31be3d54cbf29cf2a4e6fa9e7d4 Mon Sep 17 00:00:00 2001
From: Willem Jan Withagen <wjw@digiware.nl>
Date: Tue, 28 Aug 2018 11:21:00 +0200
Subject: [PATCH] core: Clang misses <optional> include

Signed-off-by: Willem Jan Withagen <wjw@digiware.nl>
---
 src/common/async/detail/shared_mutex.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/common/async/detail/shared_mutex.h b/src/common/async/detail/shared_mutex.h
index 100ec701909f7..1a79a69d4e14f 100644
--- a/src/common/async/detail/shared_mutex.h
+++ b/src/common/async/detail/shared_mutex.h
@@ -16,6 +16,7 @@
 
 #include <condition_variable>
 #include <mutex>
+#include <optional>
 #include <shared_mutex> // for std::shared_lock
 
 #include <boost/smart_ptr/intrusive_ref_counter.hpp>
-- 
2.39.5