From 0af4ba4109048b57151a99eb0067c0a421e876c1 Mon Sep 17 00:00:00 2001
From: Kefu Chai <kchai@redhat.com>
Date: Sat, 7 Aug 2021 00:36:39 +0800
Subject: [PATCH] msg/async/compression_onwire: include used header

this fixes the FTBFS with Clang + libc++.

Signed-off-by: Kefu Chai <kchai@redhat.com>
---
 src/msg/async/compression_onwire.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/msg/async/compression_onwire.h b/src/msg/async/compression_onwire.h
index e90274a6c5c4a..dcd6d26c4ca30 100644
--- a/src/msg/async/compression_onwire.h
+++ b/src/msg/async/compression_onwire.h
@@ -4,6 +4,8 @@
 #ifndef CEPH_COMPRESSION_ONWIRE_H
 #define CEPH_COMPRESSION_ONWIRE_H
 
+#include <optional>
+
 #include "compressor/Compressor.h"
 #include "include/buffer.h"
 
-- 
2.39.5