#
# MDEV-4520: Assertion `0' fails in Query_cache::end_of_result on
# concurrent drop event and event execution
#
set @save_query_cache_size=@@query_cache_size;
set GLOBAL query_cache_size=1355776;
create user mysqltest1@localhost;
grant SELECT on test.* to mysqltest1@localhost;
create table t1 (a int);
connect  con1,localhost,mysqltest1,,;
connection con1;
# This explain put here to be sure that init connection query
# has 'Impossible WHERE'.
explain extended select * from test.t1 where 0;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
Warnings:
Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where 0
connection default;
disconnect con1;
revoke all privileges, grant option from mysqltest1@localhost;
drop user mysqltest1@localhost;
drop table t1;
set GLOBAL query_cache_size=@save_query_cache_size;