common/buffer: add missing include for std::cerr

Signed-off-by: Max Kellermann <max.kellermann@ionos.com>

diff --git a/src/common/buffer.cc b/src/common/buffer.cc
index b464097928906635ccc567cd27c72cdd6418d37f..4443ef1412494460da1eddbeea4f812d689d11f1 100644 (file)
--- a/src/common/buffer.cc
+++ b/src/common/buffer.cc
@@ -19,6 +19,8 @@
 
 #include <sys/uio.h>
 
+#include <iostream>
+
 #include "include/ceph_assert.h"
 #include "include/types.h"
 #include "include/buffer_raw.h"