In maria-5.3-mwl90:

backtrace:

#4 <signal handler called>
#5 0x083b5e8f in get_constant_key_infix (index_info=0xae63e458, index_range_tree=0xae66f800, first_non_group_part=0xae63e4b0, min_max_arg_part=0x0,
last_part=0xae63e4c8, thd=0x9c37bc8, key_infix=0xae7f9be0 "^", key_infix_len=0xae7fb41c, first_non_infix_part=0xae7fb438) at opt_range.cc:11865
#6 0x083b5189 in get_best_group_min_max (param=0xae7fb5b8, tree=0xae66f6c8) at opt_range.cc:11517
#7 0x083a3b2d in SQL_SELECT::test_quick_select (this=0xae66db10, thd=0x9c37bc8, keys_to_use=..., prev_tables=4611686018427387904, limit=1,
force_quick_range=false, ordered_output=false) at opt_range.cc:3048
#8 0x08317639 in make_join_select (join=0xae65e6e0, select=0xae66d9e8, cond=0xae6325b8) at sql_select.cc:7616
#9 0x083061b8 in JOIN::optimize (this=0xae65e6e0) at sql_select.cc:1113
#10 0x0823c1ea in subselect_single_select_engine::exec (this=0xae632780) at item_subselect.cc:2642
#11 0x08236d11 in Item_subselect::exec (this=0xae6326b8) at item_subselect.cc:481
#12 0x082385d7 in Item_exists_subselect::val_int (this=0xae6326b8) at item_subselect.cc:1120
#13 0x081d69ee in Item::val_int_result (this=0xae6326b8) at item.h:781
#14 0x081d2712 in Item_cache_int::cache_value (this=0xae633290) at item.cc:7820
#15 0x081da692 in Item_cache_wrapper::cache (this=0xae633228) at item.cc:6825
#16 0x081cfea6 in Item_cache_wrapper::val_int (this=0xae633228) at item.cc:6879
#17 0x08325242 in evaluate_join_record (join=0xae659858, join_tab=0xae632dd0, error=0) at sql_select.cc:14191
#18 0x08324ead in sub_select (join=0xae659858, join_tab=0xae632dd0, end_of_records=false) at sql_select.cc:14096
#19 0x08324759 in do_select (join=0xae659858, fields=0x9c395f8, table=0x0, procedure=0x0) at sql_select.cc:13751
#20 0x0830aa73 in JOIN::exec (this=0xae659858) at sql_select.cc:2464
#21 0x0830b241 in mysql_select (thd=0x9c37bc8, rref_pointer_array=0x9c39668, tables=0xae631b18, wild_num=1, fields=..., conds=0xae6326b8, og_num=0,
order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147764736, result=0xae632818, unit=0x9c392c4, select_lex=0x9c39564)
at sql_select.cc:2681
#22 0x083039d9 in handle_select (thd=0x9c37bc8, lex=0x9c39268, result=0xae632818, setup_tables_done_option=0) at sql_select.cc:283
#23 0x082a1477 in execute_sqlcom_select (thd=0x9c37bc8, all_tables=0xae631b18) at sql_parse.cc:5070
#24 0x08298486 in mysql_execute_command (thd=0x9c37bc8) at sql_parse.cc:2234
#25 0x082a3a12 in mysql_parse (thd=0x9c37bc8, rawbuf=0xae631960 "SELECT * FROM t2\nWHERE EXISTS (\nSELECT DISTINCT f3\nFROM t1\nWHERE f3 <= t2.f4\n)",
length=78, found_semicolon=0xae7ff228) at sql_parse.cc:6077
#26 0x0829611b in dispatch_command (command=COM_QUERY, thd=0x9c37bc8, packet=0x9c4fd89 "", packet_length=78) at sql_parse.cc:1210
#27 0x082955c8 in do_command (thd=0x9c37bc8) at sql_parse.cc:903
#28 0x082926a6 in handle_one_connection (arg=0x9c37bc8) at sql_connect.cc:1154
#29 0x00821919 in start_thread () from /lib/libpthread.so.0
#30 0x00453cce in clone () from /lib/libc.so.6

bzr version-info:

revision-id: <email address hidden>
date: 2011-02-20 11:35:26 +0300
build-date: 2011-02-23 19:00:56 +0200
revno: 2922
branch-nick: maria-5.3-mwl90

CREATE TABLE t1 ( f1 int(11), f3 varchar(1)) ;
INSERT INTO t1 VALUES ('8','c'),('5','f');

ALTER TABLE t1 ADD KEY (f3,f1);

CREATE TABLE t2 ( f4 varchar(1)) ;
INSERT INTO t2 VALUES ('f'),('d');

SELECT * FROM t2
WHERE EXISTS (
SELECT DISTINCT f3
FROM t1
WHERE f3 <= t2.f4
);