Bug #6572 SHOW ERRORS doesn't

Description:
SHOW ERRORS consistently returns "Empty Set"

SHOW WARNINGS shows only warnings, not errors

How to repeat:
mysql> create table t (i);
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
mysql> show errors;
Empty set (0.00 sec)

mysql> create table t (i int) engine=blah;
ERROR 1286 (42000): Unknown table engine 'blah'

mysql> create table t (i int not null primary key);
Query OK, 0 rows affected (0.11 sec)

mysql> insert into t values (1), (1);
ERROR 1062 (23000): Duplicate entry '1' for key 1
mysql> show warnings;
Empty set (0.00 sec)

mysql> show errors;
Empty set (0.00 sec)

Fixed in 4.1.11

Noted in 4.1.11 changelog.