bug#27571

1

set @b= 0;

update t4 set b=b + bug27563(b);

select count(*) FROM INFORMATION_SCHEMA.PROCESSLIST where state='User lock';

count(*)

1

kill query ID;

ERROR 70100: Query execution was interrupted

select * from t4 order by b /* must be (1,1), (1,2) */;

a	b

1	1

1

set @b= 0;

delete from t4 where b=bug27563(1) or b=bug27563(2);

select count(*) FROM INFORMATION_SCHEMA.PROCESSLIST where state='User lock';

count(*)

1

kill query ID;

ERROR 70100: Query execution was interrupted

select count(*) from t4 /* must be 1 */;

count(*)

1