membuffer: annotate printf style function

(cherry picked from commit ff8597d50bebe92a9bf25df61d091f530c30791d)

diff --git a/src/util-buffer.h b/src/util-buffer.h
index 58bee053979d91dd5adb2c9723036fb2315cbefc..a08ac38042868217763dc5c1de9aab4fc4086fa3 100644 (file)
--- a/src/util-buffer.h
+++ b/src/util-buffer.h
@@ -128,6 +128,6 @@ uint32_t MemBufferWriteRaw(MemBuffer *dst, const uint8_t *raw, const uint32_t ra
  * \param format The format string.
  * \param ...    Variable arguments.
  */
-void MemBufferWriteString(MemBuffer *dst, const char *fmt, ...);
+void MemBufferWriteString(MemBuffer *dst, const char *fmt, ...) ATTR_FMT_PRINTF(2, 3);
 
 #endif /* __UTIL_BUFFER_H__ */