LP:1006231 - crash in select_describe

I:\ade\build\bzr\maria-5.5>bzr revno
3418

mysqld --no-defaults --console --skip-gr --skip-na --core-file

Version: '5.5.24-MariaDB' socket: '' port: 3306 Source distribution
120530 7:41:32 [ERROR] mysqld got exception 0xc0000005 ;

mysqld.exe!select_describe()[sql_select.cc:21331]
mysqld.exe!JOIN::exec()[sql_select.cc:2319]
mysqld.exe!mysql_select()[sql_select.cc:3016]
mysqld.exe!mysql_explain_union()[sql_select.cc:21818]
mysqld.exe!select_describe()[sql_select.cc:21775]
mysqld.exe!JOIN::exec()[sql_select.cc:2319]
mysqld.exe!mysql_select()[sql_select.cc:3016]
mysqld.exe!mysql_explain_union()[sql_select.cc:21818]
mysqld.exe!select_describe()[sql_select.cc:21775]
mysqld.exe!JOIN::exec()[sql_select.cc:2319]
mysqld.exe!mysql_select()[sql_select.cc:3016]
mysqld.exe!mysql_explain_union()[sql_select.cc:21818]
mysqld.exe!execute_sqlcom_select()[sql_parse.cc:4587]
mysqld.exe!mysql_execute_command()[sql_parse.cc:2184]
mysqld.exe!mysql_parse()[sql_parse.cc:5731]
mysqld.exe!dispatch_command()[sql_parse.cc:1058]
mysqld.exe!do_command()[sql_parse.cc:794]
mysqld.exe!do_handle_one_connection()[sql_connect.cc:1253]
mysqld.exe!handle_one_connection()[sql_connect.cc:1168]
mysqld.exe!pthread_start()[my_winthread.c:60]
mysqld.exe!_callthreadstartex()[threadex.c:314]
mysqld.exe!_threadstartex()[threadex.c:292]

#How to repeat:

drop table if exists `t1`;
create table `t1`(`a1` int)engine=innodb;
insert into `t1` values (1);
explain select 1 from `t1` where 1 like
( select 1 from t1 where 1 <=>
(select 1 from t1 group by `a1`)
);