mariadb/mysql-test/t/adddate_454.test

#
# MDEV-454 Addition of a time interval reduces the resulting value
#
create table t1 (d date);
insert into t1 values ('2012-00-00');
select * from t1;
update t1 set d = adddate(d, interval 1 day);
select * from t1;
drop table t1;