Fix for bug #6266 "Invalid DATETIME value is not handled properly".

In server we assume that datetime values stored in MYSQL_TIME struct
are normalized (and year is not greater than 9999), so we should 
perform range checks in all places then we convert something to
MYSQL_TIME. 

1 files changed, 3 insertions, 2 deletions

diff --git a/include/my_time.h b/include/my_time.h
index dab17904b2d..94701e159c4 100644
--- a/include/my_time.h
+++ b/include/my_time.h
@@ -58,14 +58,15 @@ void init_time(void);
 my_time_t 
 my_system_gmt_sec(const MYSQL_TIME *t, long *my_timezone, bool *in_dst_time_gap);
 
-void set_zero_time(MYSQL_TIME *tm);
+void set_zero_time(MYSQL_TIME *tm, enum enum_mysql_timestamp_type time_type);
 
 /*
   Required buffer length for my_time_to_str, my_date_to_str,
   my_datetime_to_str and TIME_to_string functions. Note, that the
   caller is still responsible to check that given TIME structure
   has values in valid ranges, otherwise size of the buffer could
-  be not enough.
+  be not enough. We also rely on the fact that even wrong values
+  sent using binary protocol fit in this buffer.
 */
 #define MAX_DATE_STRING_REP_LENGTH 30