Merge rkalimullin@bk-internal.mysql.com:/home/bk/mysql-5.1-maint

into  mysql.com:/usr/home/ram/work/bug22229/my51-bug22229

mysql-test/r/func_time.result

@@ -1180,6 +1180,9 @@ id	day	id	day
 3	2005-07-01	3	2005-07-15
 DROP TABLE t1,t2;
 set time_zone= @@global.time_zone;
+select str_to_date('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE;
+str_to_date('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE
+NULL
 End of 5.0 tests
 select date_sub("0050-01-01 00:00:01",INTERVAL 2 SECOND);
 date_sub("0050-01-01 00:00:01",INTERVAL 2 SECOND)

mysql-test/t/func_time.test

@@ -686,6 +686,12 @@ DROP TABLE t1,t2;
 
 # Restore timezone to default
 set time_zone= @@global.time_zone;
+
+#
+# Bug #22229: bug in DATE_ADD()
+#
+
+select str_to_date('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE;
 --echo End of 5.0 tests
 
 #

sql/item_timefunc.cc

@@ -3208,7 +3208,9 @@ bool Item_func_str_to_date::get_date(TIME *ltime, uint fuzzy_date)
   date_time_format.format.str=    (char*) format->ptr();
   date_time_format.format.length= format->length();
   if (extract_date_time(&date_time_format, val->ptr(), val->length(),
-			ltime, cached_timestamp_type, 0, "datetime"))
+			ltime, cached_timestamp_type, 0, "datetime") ||
+      ((fuzzy_date & TIME_NO_ZERO_DATE) &&
+       (ltime->year == 0 || ltime->month == 0 || ltime->day == 0)))
     goto null_date;
   if (cached_timestamp_type == MYSQL_TIMESTAMP_TIME && ltime->day)
   {