crash in fix_semijoin_strategies_for_picked_join_order

Use of uninitialised value of size 8

at: fix_semijoin_strategies_for_picked_join_order (opt_subselect.cc:3191)

by: get_best_combination (sql_select.cc:7672)

by: make_join_statistics (sql_select.cc:3864)

by: JOIN::optimize_inner (sql_select.cc:1264)

by: JOIN::optimize (sql_select.cc:986)

by: mysql_select (sql_select.cc:3178)

by: handle_select (sql_select.cc:363)

by: execute_sqlcom_select (sql_parse.cc:5004)

by: mysql_execute_command (sql_parse.cc:2472)

by: mysql_parse (sql_parse.cc:6124)

by: dispatch_command (sql_parse.cc:1266)

by: do_handle_one_connection (sql_connect.cc:1267)

by: handle_one_connection (sql_connect.cc:1181)

by: start_thread (pthread_create.c:309)

by: clone (clone.S:115)

bool greedy_search(JOIN*, table_map, uint, uint): Assertion `!is_interleave_error' failed.

--source include/have_innodb.inc

drop table if exists y,e,j;

create table e(a int,unique key (a)) engine=innodb;

create table j(b int) engine=innodb;

create table y(a int,b int)engine=innodb;

set optimizer_prune_level=0;

set optimizer_search_depth=2;

select 1 from y join e a 

natural left join e b 

natural right outer join j;