Crash with Explain extended when using limit rows examined

create table t1 (c1 char(2));

create table t2 (c2 char(2));

insert into t1 values ('bb'), ('cc'), ('aa'), ('dd');

insert into t2 values ('bb'), ('cc'), ('dd'), ('ff');

explain extended

select * from t1, t2 where c1 = c2 LIMIT ROWS EXAMINED 2;