1 files changed, 1 insertions, 0 deletions
diff --git a/sql/field.h b/sql/field.h
index 4efabcead18..002a7228164 100644
--- a/sql/field.h
+++ b/sql/field.h
@@ -92,6 +92,7 @@ public:
 	utype unireg_check_arg, const char *field_name_arg,
 	struct st_table *table_arg);
   virtual ~Field() {}
+  /* Store functions returns 1 on overflow and -1 on fatal error */
   virtual int  store(const char *to,uint length,CHARSET_INFO *cs)=0;
   virtual int  store(double nr)=0;
   virtual int  store(longlong nr)=0;