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|
Warnings:
Warning	1681	Integer display width is deprecated and will be removed in a future release.
reset master;
insert into t2 values (bug23333(),1);
ERROR 23000: Duplicate entry '1' for key 't2.PRIMARY'
include/show_binlog_events.inc
Log_name	Pos	Event_type	Server_id	End_log_pos	Info
binlog.000001	#	Query	#	#	BEGIN
binlog.000001	#	Table_map	#	#	table_id: # (test.t1)
binlog.000001	#	Write_rows	#	#	table_id: # flags: STMT_END_F
binlog.000001	#	Query	#	#	COMMIT
select count(*),@a from t1 /* must be 1,1 */;
count(*)	@a
1	1
drop table t1,t2;
drop function if exists bug23333;