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

MaxKellermann · MaxKellermann · commit 98bf9fd9f5c6 · 2024-11-04T22:31:05.000+01:00
Signed-off-by: Max Kellermann &lt;max.kellermann@ionos.com&gt;
diff --git 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"
