mariadb/mysql-test/suite/roles/show_grants_anon-5238.test

#
# MDEV-5238 Server crashes in find_role_grant_pair on SHOW GRANTS for an anonymous user
#
--source include/not_embedded.inc

create user ''@localhost;
create role r1;
grant r1 to ''@localhost;

--connect (con1,localhost,nonexisting_user,,)
select current_user;
show grants;

connection default;
drop role r1;
drop user ''@localhost;