User auto-creation does not work upon GRANT <role>

--disable_warnings

drop database if exists db;

--enable_warnings

--error 0,ER_CANNOT_USER

drop role auto_create;

create database db;

create role auto_create;

grant all on db.* to auto_create;

--error 0,ER_CANNOT_USER

drop user foo@localhost, bar@localhost;

grant auto_create to foo@localhost;

grant auto_create to bar@localhost identified by 'baz';

--connect (con1,localhost,foo,,db)

set role 'auto_create';

create table t1 (i int);

--disconnect con1

--connect (con1,localhost,bar,baz,db)

set role auto_create;

insert into t1 values (1);

--disconnect con1

--connection default

drop user foo@localhost, bar@localhost;

set @sql_mode_saved = @@sql_mode;

set sql_mode = 'no_auto_create_user';

--error ER_PASSWORD_NO_MATCH

grant auto_create to foo@localhost;

grant auto_create to bar@localhost identified by 'baz';

--error ER_ACCESS_DENIED_ERROR

--connect (con1,localhost,foo,,db)

--connect (con1,localhost,bar,baz,db)

set role auto_create;

drop table t1;

--disconnect con1

--connection default

drop user bar@localhost;

drop role auto_create;

drop database db;

set sql_mode = @sql_mode_saved;