Crash in create_ref_for_key() with maria-5.3-mwl89

[Philip Stoev]

When executed with semijoin=off, the following query crashes in maria-5.3-mwl89:

SELECT `col_int_key` FROM B
WHERE ( 2 , 6 ) IN ( SELECT SUBQUERY1_t1 .`col_int_nokey` , SUBQUERY1_t1 .`col_int_nokey` FROM C SUBQUERY1_t1 STRAIGHT_JOIN CC SUBQUERY1_t2 ON SUBQUERY1_t2 .`pk` = SUBQUERY1_t1 .`pk` ) ;

backtrace:

#4 <signal handler called>
#5 0x0830e269 in create_ref_for_key (join=0xaeca51d0, j=0xaecab710, org_keyuse=0xaecac484, used_tables=4611686018427387907) at sql_select.cc:6223
#6 0x0830d87b in get_best_combination (join=0xaeca51d0) at sql_select.cc:6083
#7 0x083068e4 in make_join_statistics (join=0xaeca51d0, tables_arg=0xaec5ebc0, conds=0xaecaa760, keyuse_array=0xaeca9f0c) at sql_select.cc:3151
#8 0x082fe797 in JOIN::optimize (this=0xaeca51d0) at sql_select.cc:962
#9 0x081a7131 in st_select_lex::optimize_unflattened_subqueries (this=0xa28beb8) at sql_lex.cc:3107
#10 0x083be01d in JOIN::optimize_unflattened_subqueries (this=0xaeca0358) at opt_subselect.cc:3569
#11 0x082ffb9c in JOIN::optimize (this=0xaeca0358) at sql_select.cc:1312
#12 0x08304283 in mysql_select (thd=0xa28a548, rref_pointer_array=0xa28bfbc, tables=0xaec5e208, wild_num=0, fields=..., conds=0xaec5f518, og_num=0,
    order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147764736, result=0xaec5f6a0, unit=0xa28bc20, select_lex=0xa28beb8)
    at sql_select.cc:2583
#13 0x082fc7e3 in handle_select (thd=0xa28a548, lex=0xa28bbc4, result=0xaec5f6a0, setup_tables_done_option=0) at sql_select.cc:276
#14 0x0829af04 in execute_sqlcom_select (thd=0xa28a548, all_tables=0xaec5e208) at sql_parse.cc:5081
#15 0x082918e4 in mysql_execute_command (thd=0xa28a548) at sql_parse.cc:2265
#16 0x0829d0e5 in mysql_parse (thd=0xa28a548,
    inBuf=0xaec5def8 "SELECT `col_int_key` FROM B WHERE ( 2 , 6 ) IN ( SELECT SUBQUERY1_t1 .`col_int_nokey` , SUBQUERY1_t1 .`col_int_nokey` FROM C SUBQUERY1_t1 STRAIGHT_JOIN CC SUBQUERY1_t2 ON SUBQUERY1_t2 .`pk"..., length=226, found_semicolon=0xaedf8230) at sql_parse.cc:6027
#17 0x0828f316 in dispatch_command (command=COM_QUERY, thd=0xa28a548,
    packet=0xa2a6c19 " SELECT `col_int_key` FROM B WHERE ( 2 , 6 ) IN ( SELECT SUBQUERY1_t1 .`col_int_nokey` , SUBQUERY1_t1 .`col_int_nokey` FROM C SUBQUERY1_t1 STRAIGHT_JOIN CC SUBQUERY1_t2 ON SUBQUERY1_t2 .`p"..., packet_length=230) at sql_parse.cc:1184
#18 0x0828e7bc in do_command (thd=0xa28a548) at sql_parse.cc:890
#19 0x0828b91c in handle_one_connection (arg=0xa28a548) at sql_connect.cc:1153
#20 0x00bea919 in start_thread () from /lib/libpthread.so.0
#21 0x00b2ccbe in clone () from /lib/libc.so.6

bzr version-info:

revision-id: <email address hidden>
date: 2010-09-30 18:32:44 +0300
build-date: 2010-10-01 09:27:26 +0300
revno: 2811
branch-nick: maria-5.3-mwl89

[Philip Stoev (pstoev-askmonty)]

Test case :

SET SESSION optimizer_switch='semijoin=off';

--disable_warnings
DROP TABLE /*! IF EXISTS */ CC;
DROP TABLE /*! IF EXISTS */ C;
DROP TABLE /*! IF EXISTS */ B;
--enable_warnings

CREATE TABLE `CC` (
  `pk` int(11) NOT NULL AUTO_INCREMENT,
  `col_int_nokey` int(11) DEFAULT NULL,
  `col_int_key` int(11) DEFAULT NULL,
  `col_varchar_key` varchar(1) DEFAULT NULL,
  PRIMARY KEY (`pk`),
  KEY `col_int_key` (`col_int_key`),
  KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`)
) ENGINE=MyISAM AUTO_INCREMENT=30 DEFAULT CHARSET=latin1;
INSERT INTO `CC` VALUES (10,7,8,'v');
INSERT INTO `CC` VALUES (11,1,9,'r');
INSERT INTO `CC` VALUES (12,5,9,'a');
INSERT INTO `CC` VALUES (13,3,186,'m');
INSERT INTO `CC` VALUES (14,6,NULL,'y');
INSERT INTO `CC` VALUES (15,92,2,'j');
INSERT INTO `CC` VALUES (16,7,3,'d');
INSERT INTO `CC` VALUES (17,NULL,0,'z');
INSERT INTO `CC` VALUES (18,3,133,'e');
INSERT INTO `CC` VALUES (19,5,1,'h');
INSERT INTO `CC` VALUES (20,1,8,'b');
INSERT INTO `CC` VALUES (21,2,5,'s');
INSERT INTO `CC` VALUES (22,NULL,5,'e');
INSERT INTO `CC` VALUES (23,1,8,'j');
INSERT INTO `CC` VALUES (24,0,6,'e');
INSERT INTO `CC` VALUES (25,210,51,'f');
INSERT INTO `CC` VALUES (26,8,4,'v');
INSERT INTO `CC` VALUES (27,7,7,'x');
INSERT INTO `CC` VALUES (28,5,6,'m');
INSERT INTO `CC` VALUES (29,NULL,4,'c');
CREATE TABLE `C` (
  `pk` int(11) NOT NULL AUTO_INCREMENT,
  `col_int_nokey` int(11) DEFAULT NULL,
  `col_int_key` int(11) DEFAULT NULL,
  `col_varchar_key` varchar(1) DEFAULT NULL,
  PRIMARY KEY (`pk`),
  KEY `col_int_key` (`col_int_key`),
  KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`)
) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1;
INSERT INTO `C` VALUES (1,NULL,2,'w');
INSERT INTO `C` VALUES (2,7,9,'m');
INSERT INTO `C` VALUES (3,9,3,'m');
INSERT INTO `C` VALUES (4,7,9,'k');
INSERT INTO `C` VALUES (5,4,NULL,'r');
INSERT INTO `C` VALUES (6,2,9,'t');
INSERT INTO `C` VALUES (7,6,3,'j');
INSERT INTO `C` VALUES (8,8,8,'u');
INSERT INTO `C` VALUES (9,NULL,8,'h');
INSERT INTO `C` VALUES (10,5,53,'o');
INSERT INTO `C` VALUES (11,NULL,0,NULL);
INSERT INTO `C` VALUES (12,6,5,'k');
INSERT INTO `C` VALUES (13,188,166,'e');
INSERT INTO `C` VALUES (14,2,3,'n');
INSERT INTO `C` VALUES (15,1,0,'t');
INSERT INTO `C` VALUES (16,1,1,'c');
INSERT INTO `C` VALUES (17,0,9,'m');
INSERT INTO `C` VALUES (18,9,5,'y');
INSERT INTO `C` VALUES (19,NULL,6,'f');
INSERT INTO `C` VALUES (20,4,2,'d');
CREATE TABLE `B` (
  `pk` int(11) NOT NULL AUTO_INCREMENT,
  `col_int_nokey` int(11) DEFAULT NULL,
  `col_int_key` int(11) DEFAULT NULL,
  `col_varchar_key` varchar(1) DEFAULT NULL,
  PRIMARY KEY (`pk`),
  KEY `col_int_key` (`col_int_key`),
  KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`)
) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=latin1;
INSERT INTO `B` VALUES (1,1,7,'f');

SELECT `col_int_key`
FROM B
WHERE ( 2 , 6 ) IN (
SELECT SUBQUERY1_t1 .`col_int_nokey` , SUBQUERY1_t1 .`col_int_nokey`
FROM C SUBQUERY1_t1 STRAIGHT_JOIN CC SUBQUERY1_t2 ON SUBQUERY1_t2 .`pk` = SUBQUERY1_t1 .`pk` ) ;