drop function if exists bug23333|
drop table if exists t1,t2|
CREATE TABLE t1 (a int  NOT NULL auto_increment primary key) ENGINE=MyISAM|
CREATE TABLE t2 (a int  NOT NULL auto_increment, b int, PRIMARY KEY (a)) ENGINE=InnoDB|
insert into t2 values (1,1)|
create function bug23333() 
RETURNS int(11)
DETERMINISTIC
begin
insert into t1 values (null);
select count(*) from t1 into @a;
return @a;
end|
reset master|
insert into t2 values (bug23333(),1)|
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
drop table t1,t2;
drop function if exists bug23333;