1 files changed, 7 insertions, 0 deletions
diff --git a/lib/vty.h b/lib/vty.h
index 31cbd498..65ae6201 100644
--- a/lib/vty.h
+++ b/lib/vty.h
@@ -141,6 +141,13 @@ struct vty
 #define IS_DIRECTORY_SEP(c) ((c) == DIRECTORY_SEP)
 #endif
 
+/* GCC have printf type attribute check.  */
+#ifdef __GNUC__
+#define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
+#else
+#define PRINTF_ATTRIBUTE(a,b)
+#endif /* __GNUC__ */
+
 /* Utility macros to convert VTY argument to unsigned long or integer. */
 #define VTY_GET_LONG(NAME,V,STR) \
 do { \