followup for lp:730637

mysql-test/t/func_time.test:
  fixed wrong test case
sql-common/my_time.c:
  negative datetime is invalid.
  fix check_date() to reflect that.

mysql-test/r/func_time.result

@@ -1430,18 +1430,14 @@ NULL
 select cast(str_to_date(NULL, '%H:%i:%s') as time);
 cast(str_to_date(NULL, '%H:%i:%s') as time)
 NULL
-create table t1 (a timestamp,key(a));
-insert t1 values ('2010-01-01 02:03:04');
-insert t1 select a + interval 1 day from t1;
-insert t1 select a + interval 2 day from t1;
-insert t1 select a + interval 4 day from t1;
-insert t1 select a + interval 8 day from t1;
-insert t1 select a + interval 16 day from t1;
-explain select * from t1 where a > cast('2010-10-00 01:02:03' as datetime);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	a	a	4	NULL	32	Using where; Using index
+create table t1 (f1 datetime, key (f1));
+insert into t1 values ('2000-09-12 00:00:00'), ('2007-04-25 05:08:49');
+select * from t1 where f1 > time('-23:00:06');
+f1
+2000-09-12 00:00:00
+2007-04-25 05:08:49
 Warnings:
-Warning	1292	Incorrect datetime value: '2010-10-00 01:02:03' for column 'a' at row 1
+Warning	1292	Incorrect datetime value: '-23:00:06' for column 'f1' at row 1
 drop table t1;
 select maketime(20,61,10)+0;
 maketime(20,61,10)+0

mysql-test/t/func_time.test

@@ -886,16 +886,14 @@ select truncate(date('2010-40-10'), 6);
 select extract(month from '2010-40-50');
 select subtime('0000-00-10 10:10:10', '30 10:00:00');
 
+#
+# lp:730637 Valgrind warnings in 5.1-micro 
+#
 select cast(str_to_date(NULL, '%H:%i:%s') as time);
 
-create table t1 (a timestamp,key(a));
-insert t1 values ('2010-01-01 02:03:04');
-insert t1 select a + interval 1 day from t1;
-insert t1 select a + interval 2 day from t1;
-insert t1 select a + interval 4 day from t1;
-insert t1 select a + interval 8 day from t1;
-insert t1 select a + interval 16 day from t1;
-explain select * from t1 where a > cast('2010-10-00 01:02:03' as datetime);
+create table t1 (f1 datetime, key (f1));
+insert into t1 values ('2000-09-12 00:00:00'), ('2007-04-25 05:08:49');
+select * from t1 where f1 > time('-23:00:06');
 drop table t1;
 
 #

sql-common/my_time.c

@@ -84,7 +84,7 @@ my_bool check_date(const MYSQL_TIME *ltime, my_bool not_zero_date,
   if (not_zero_date)
   {
     if ((((flags & TIME_NO_ZERO_IN_DATE) || !(flags & TIME_FUZZY_DATE)) &&
-         (ltime->month == 0 || ltime->day == 0)) ||
+         (ltime->month == 0 || ltime->day == 0)) || ltime->neg ||
         (!(flags & TIME_INVALID_DATES) &&
          ltime->month && ltime->day > days_in_month[ltime->month-1] &&
          (ltime->month != 2 || calc_days_in_year(ltime->year) != 366 ||