SIGSEGV in handler_index_cond_check on SELECT in connection with rowid_filter setting

SET sql_mode='';

SET join_cache_level=3;

CREATE TABLE t (c BIGINT, d INT, KEY c(c), KEY d(d)) ENGINE=InnoDB;

INSERT INTO t VALUES (0,0),(1,2),(1,3),(2,0),(3,0),(4,6),(5,0);

SELECT * FROM t,t AS b WHERE t.c=0 AND t.d=b.c AND t.c=b.d;

Core was generated by `/test/MD121221-mariadb-10.8.0-linux-x86_64-opt/bin/mysqld --no-defaults --core-'.

Program terminated with signal SIGSEGV, Segmentation fault.

#0  0x000055cb1b08680f in handler_index_cond_check (h_arg=0x14831c049e60)

    at /test/10.8_opt/sql/handler.cc:6708

6708	  if ((res= h->pushed_idx_cond->val_int()? CHECK_POS : CHECK_NEG) ==

[Current thread is 1 (Thread 0x148392175700 (LWP 635439))]

(gdb) bt

#0  0x000055cb1b08680f in handler_index_cond_check (h_arg=0x14831c049e60) at /test/10.8_opt/sql/handler.cc:6708

#1  0x000055cb1b441635 in row_search_idx_cond_check (mysql_rec=0x14831c049a48 <incomplete sequence \371>, prebuilt=0x14831c04aab0, rec=0x1483947c407e <error: Cannot access memory at address 0x1483947c407e>, offsets=0x148392172850) at /test/10.8_opt/storage/innobase/row/row0sel.cc:4045

#2  0x000055cb1b444c8a in row_search_mvcc (buf=buf@entry=0x14831c049a48 <incomplete sequence \371>, mode=<optimized out>, mode@entry=PAGE_CUR_G, prebuilt=0x14831c04aab0, match_mode=match_mode@entry=0, direction=direction@entry=0) at /test/10.8_opt/storage/innobase/row/row0sel.cc:5414

#3  0x000055cb1b375960 in ha_innobase::index_read (find_flag=HA_READ_AFTER_KEY, key_len=0, key_ptr=0x0, buf=0x14831c049a48 <incomplete sequence \371>, this=0x14831c049e60) at /test/10.8_opt/storage/innobase/handler/ha_innodb.cc:9002

#4  ha_innobase::index_first (buf=0x14831c049a48 <incomplete sequence \371>, this=0x14831c049e60) at /test/10.8_opt/storage/innobase/handler/ha_innodb.cc:9364

#5  ha_innobase::rnd_next (buf=0x14831c049a48 <incomplete sequence \371>, this=0x14831c049e60) at /test/10.8_opt/storage/innobase/handler/ha_innodb.cc:9457

#6  ha_innobase::rnd_next (this=0x14831c049e60, buf=0x14831c049a48 <incomplete sequence \371>) at /test/10.8_opt/storage/innobase/handler/ha_innodb.cc:9447

#7  0x000055cb1b07fd57 in handler::ha_rnd_next (this=0x14831c049e60, buf=0x14831c049a48 <incomplete sequence \371>) at /test/10.8_opt/sql/handler.cc:3393

#8  0x000055cb1ad690c4 in rr_sequential (info=0x14831c04d728) at /test/10.8_opt/sql/records.h:82

#9  0x000055cb1af8578f in JOIN_CACHE::join_matching_records (this=0x14831c04ee60, skip_last=false) at /test/10.8_opt/sql/sql_join_cache.cc:2329

#10 0x000055cb1af85141 in JOIN_CACHE::join_records (this=this@entry=0x14831c04ee60, skip_last=skip_last@entry=false) at /test/10.8_opt/sql/sql_join_cache.cc:2151

#11 0x000055cb1ae81b9a in sub_select_cache (join=0x14831c013478, join_tab=0x14831c04d660, end_of_records=<optimized out>) at /test/10.8_opt/sql/sql_select.cc:20844

#12 0x000055cb1aeaf2df in do_select (procedure=<optimized out>, join=0x14831c013478) at /test/10.8_opt/sql/sql_select.cc:20619

#13 JOIN::exec_inner (this=0x14831c013478) at /test/10.8_opt/sql/sql_select.cc:4735

#14 0x000055cb1aeaf848 in JOIN::exec (this=this@entry=0x14831c013478) at /test/10.8_opt/sql/sql_select.cc:4513

#15 0x000055cb1aead941 in mysql_select (thd=0x14831c000c58, tables=0x14831c010f60, fields=@0x14831c010c28: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x14831c010f18, last = 0x14831c013f30, elements = 4}, <No data fields>}, conds=0x14831c0125e0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=<optimized out>, result=0x14831c013450, unit=0x14831c004ea0, select_lex=0x14831c010988) at /test/10.8_opt/sql/sql_select.cc:4993

#16 0x000055cb1aeae0f7 in handle_select (thd=thd@entry=0x14831c000c58, lex=lex@entry=0x14831c004dc8, result=result@entry=0x14831c013450, setup_tables_done_option=setup_tables_done_option@entry=0) at /test/10.8_opt/sql/sql_select.cc:545

#17 0x000055cb1ae2ec01 in execute_sqlcom_select (thd=0x14831c000c58, all_tables=0x14831c010f60) at /test/10.8_opt/sql/sql_parse.cc:6253

#18 0x000055cb1ae3cef2 in mysql_execute_command (thd=0x14831c000c58, is_called_from_prepared_stmt=<optimized out>) at /test/10.8_opt/sql/sql_parse.cc:3944

#19 0x000055cb1ae29986 in mysql_parse (thd=0x14831c000c58, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /test/10.8_opt/sql/sql_parse.cc:8028

#20 0x000055cb1ae35b35 in dispatch_command (command=COM_QUERY, thd=0x14831c000c58, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/10.8_opt/sql/sql_class.h:1360

#21 0x000055cb1ae37d27 in do_command (thd=0x14831c000c58, blocking=blocking@entry=true) at /test/10.8_opt/sql/sql_parse.cc:1402

#22 0x000055cb1af562e7 in do_handle_one_connection (connect=<optimized out>, put_in_cache=true) at /test/10.8_opt/sql/sql_connect.cc:1418

#23 0x000055cb1af5662d in handle_one_connection (arg=arg@entry=0x55cb1dbe5be8) at /test/10.8_opt/sql/sql_connect.cc:1312

#24 0x000055cb1b2c45d8 in pfs_spawn_thread (arg=0x55cb1db9d218) at /test/10.8_opt/storage/perfschema/pfs.cc:2201

#25 0x00001483b1316609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#26 0x00001483b0f04293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Core was generated by `/test/MD121221-mariadb-10.8.0-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.

Program terminated with signal SIGSEGV, Segmentation fault.

#0  0x000055f9f0af1c63 in handler_index_cond_check (h_arg=0x1463a00728e0)

    at /test/10.8_dbg/sql/handler.cc:6708

6708	  if ((res= h->pushed_idx_cond->val_int()? CHECK_POS : CHECK_NEG) ==

[Current thread is 1 (Thread 0x1464505a2700 (LWP 636278))]

(gdb) bt

#0  0x000055f9f0af1c63 in handler_index_cond_check (h_arg=0x1463a00728e0) at /test/10.8_dbg/sql/handler.cc:6708

#1  0x000055f9f10622ac in row_search_idx_cond_check (mysql_rec=mysql_rec@entry=0x1463a0072458 <incomplete sequence \371>, prebuilt=prebuilt@entry=0x1463a00735c8, rec=rec@entry=0x14643cc5c07e "", offsets=0x14645059f520) at /test/10.8_dbg/storage/innobase/row/row0sel.cc:4045

#2  0x000055f9f106d0a9 in row_search_mvcc (buf=buf@entry=0x1463a0072458 <incomplete sequence \371>, mode=PAGE_CUR_G, prebuilt=0x1463a00735c8, match_mode=<optimized out>, direction=direction@entry=0) at /test/10.8_dbg/storage/innobase/row/row0sel.cc:5414

#3  0x000055f9f0ea45c5 in ha_innobase::index_read (this=this@entry=0x1463a00728e0, buf=buf@entry=0x1463a0072458 <incomplete sequence \371>, key_ptr=key_ptr@entry=0x0, key_len=key_len@entry=0, find_flag=find_flag@entry=HA_READ_AFTER_KEY) at /test/10.8_dbg/storage/innobase/handler/ha_innodb.cc:9002

#4  0x000055f9f0ea484c in ha_innobase::index_first (this=this@entry=0x1463a00728e0, buf=buf@entry=0x1463a0072458 <incomplete sequence \371>) at /test/10.8_dbg/storage/innobase/handler/ha_innodb.cc:9364

#5  0x000055f9f0ea48d5 in ha_innobase::rnd_next (this=0x1463a00728e0, buf=0x1463a0072458 <incomplete sequence \371>) at /test/10.8_dbg/storage/innobase/handler/ha_innodb.cc:9457

#6  0x000055f9f0ae8561 in handler::ha_rnd_next (this=0x1463a00728e0, buf=0x1463a0072458 <incomplete sequence \371>) at /test/10.8_dbg/sql/handler.cc:3393

#7  0x000055f9f06d6445 in rr_sequential (info=0x1463a00763e8) at /test/10.8_dbg/sql/records.h:82

#8  0x000055f9f0859b30 in READ_RECORD::read_record (this=0x1463a00763e8) at /test/10.8_dbg/sql/records.h:81

#9  join_init_read_record (tab=0x1463a0076320) at /test/10.8_dbg/sql/sql_select.cc:22065

#10 0x000055f9f09a1827 in JOIN_TAB_SCAN::open (this=0x1463a0077f58) at /test/10.8_dbg/sql/sql_join_cache.cc:3426

#11 0x000055f9f09a4c2d in JOIN_CACHE::join_matching_records (this=0x1463a0077da0, skip_last=false) at /test/10.8_dbg/sql/sql_join_cache.cc:2329

#12 0x000055f9f09a4482 in JOIN_CACHE::join_records (this=this@entry=0x1463a0077da0, skip_last=skip_last@entry=false) at /test/10.8_dbg/sql/sql_join_cache.cc:2151

#13 0x000055f9f0841336 in sub_select_cache (join=0x1463a0016998, join_tab=0x1463a0076320, end_of_records=<optimized out>) at /test/10.8_dbg/sql/sql_select.cc:20844

#14 0x000055f9f0840dfb in sub_select (join=0x1463a0016998, join_tab=0x1463a0075f70, end_of_records=<optimized out>) at /test/10.8_dbg/sql/sql_select.cc:21014

#15 0x000055f9f0878fcc in do_select (procedure=<optimized out>, join=0x1463a0016998) at /test/10.8_dbg/sql/sql_select.cc:20619

#16 JOIN::exec_inner (this=this@entry=0x1463a0016998) at /test/10.8_dbg/sql/sql_select.cc:4735

#17 0x000055f9f0879542 in JOIN::exec (this=this@entry=0x1463a0016998) at /test/10.8_dbg/sql/sql_select.cc:4513

#18 0x000055f9f0877553 in mysql_select (thd=thd@entry=0x1463a0000db8, tables=0x1463a0014480, fields=@0x1463a0014148: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1463a0014438, last = 0x1463a0017450, elements = 4}, <No data fields>}, conds=0x1463a0015b00, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x1463a0016970, unit=0x1463a00051c0, select_lex=0x1463a0013ea8) at /test/10.8_dbg/sql/sql_select.cc:4993

#19 0x000055f9f0877808 in handle_select (thd=thd@entry=0x1463a0000db8, lex=lex@entry=0x1463a00050e8, result=result@entry=0x1463a0016970, setup_tables_done_option=setup_tables_done_option@entry=0) at /test/10.8_dbg/sql/sql_select.cc:545

#20 0x000055f9f07d6c1e in execute_sqlcom_select (thd=thd@entry=0x1463a0000db8, all_tables=0x1463a0014480) at /test/10.8_dbg/sql/sql_parse.cc:6253

#21 0x000055f9f07e3af1 in mysql_execute_command (thd=thd@entry=0x1463a0000db8, is_called_from_prepared_stmt=is_called_from_prepared_stmt@entry=false) at /test/10.8_dbg/sql/sql_parse.cc:3944

#22 0x000055f9f07cfe0f in mysql_parse (thd=thd@entry=0x1463a0000db8, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x1464505a1400) at /test/10.8_dbg/sql/sql_parse.cc:8028

#23 0x000055f9f07deaab in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x1463a0000db8, packet=packet@entry=0x1463a000b879 "", packet_length=packet_length@entry=58, blocking=blocking@entry=true) at /test/10.8_dbg/sql/sql_class.h:1360

#24 0x000055f9f07e1eea in do_command (thd=0x1463a0000db8, blocking=blocking@entry=true) at /test/10.8_dbg/sql/sql_parse.cc:1402

#25 0x000055f9f095b89c in do_handle_one_connection (connect=<optimized out>, connect@entry=0x55f9f466be38, put_in_cache=put_in_cache@entry=true) at /test/10.8_dbg/sql/sql_connect.cc:1418

#26 0x000055f9f095bea1 in handle_one_connection (arg=arg@entry=0x55f9f466be38) at /test/10.8_dbg/sql/sql_connect.cc:1312

#27 0x000055f9f0ddd442 in pfs_spawn_thread (arg=0x55f9f457f4a8) at /test/10.8_dbg/storage/perfschema/pfs.cc:2201

#28 0x0000146459d15609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#29 0x0000146459903293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

2021-04-27 10:18:23 0 [Note] /test/UBASAN_MD260121-mariadb-10.6.0-linux-x86_64-dbg/bin/mysqld: ready for connections.

Version: '10.6.0-MariaDB-debug'  socket: '/test/UBASAN_MD260121-mariadb-10.6.0-linux-x86_64-dbg/socket.sock'  port: 32200  MariaDB Server

/data/builds/10.6_dbg_san/sql/handler.cc:6343:40: runtime error: member call on null pointer of type 'struct Item'

    #0 0x55e4bd3e4d6e in handler_index_cond_check /data/builds/10.6_dbg_san/sql/handler.cc:6343

    #1 0x55e4bf8a7542 in row_search_idx_cond_check /data/builds/10.6_dbg_san/storage/innobase/row/row0sel.cc:3989

    #2 0x55e4bf8d1c3c in row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long) /data/builds/10.6_dbg_san/storage/innobase/row/row0sel.cc:5336

    #3 0x55e4bf1c310a in ha_innobase::index_read(unsigned char*, unsigned char const*, unsigned int, ha_rkey_function) /data/builds/10.6_dbg_san/storage/innobase/handler/ha_innodb.cc:8546

    #4 0x55e4bf1c4a73 in ha_innobase::index_first(unsigned char*) /data/builds/10.6_dbg_san/storage/innobase/handler/ha_innodb.cc:8907

    #5 0x55e4bf1c4d6b in ha_innobase::rnd_next(unsigned char*) /data/builds/10.6_dbg_san/storage/innobase/handler/ha_innodb.cc:9000

    #6 0x55e4bd39cea8 in handler::ha_rnd_next(unsigned char*) /data/builds/10.6_dbg_san/sql/handler.cc:3066

    #7 0x55e4be47f57d in rr_sequential(READ_RECORD*) /data/builds/10.6_dbg_san/sql/records.cc:519

    #8 0x55e4bc07d90d in READ_RECORD::read_record() /data/builds/10.6_dbg_san/sql/records.h:81

    #9 0x55e4bc07d90d in join_init_read_record(st_join_table*) /data/builds/10.6_dbg_san/sql/sql_select.cc:21577

    #10 0x55e4bc96e0c4 in JOIN_TAB_SCAN::open() /data/builds/10.6_dbg_san/sql/sql_join_cache.cc:3358

    #11 0x55e4bc994a42 in JOIN_CACHE::join_matching_records(bool) /data/builds/10.6_dbg_san/sql/sql_join_cache.cc:2261

    #12 0x55e4bc98fac4 in JOIN_CACHE::join_records(bool) /data/builds/10.6_dbg_san/sql/sql_join_cache.cc:2093

    #13 0x55e4bbfc2ade in sub_select_cache(JOIN*, st_join_table*, bool) /data/builds/10.6_dbg_san/sql/sql_select.cc:20376

    #14 0x55e4bbfc02dc in sub_select(JOIN*, st_join_table*, bool) /data/builds/10.6_dbg_san/sql/sql_select.cc:20547

    #15 0x55e4bc18420a in do_select /data/builds/10.6_dbg_san/sql/sql_select.cc:20151

    #16 0x55e4bc18420a in JOIN::exec_inner() /data/builds/10.6_dbg_san/sql/sql_select.cc:4476

    #17 0x55e4bc18596c in JOIN::exec() /data/builds/10.6_dbg_san/sql/sql_select.cc:4256

    #18 0x55e4bc176a97 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /data/builds/10.6_dbg_san/sql/sql_select.cc:4672

    #19 0x55e4bc17846b in handle_select(THD*, LEX*, select_result*, unsigned long) /data/builds/10.6_dbg_san/sql/sql_select.cc:417

    #20 0x55e4bbd89ab2 in execute_sqlcom_select /data/builds/10.6_dbg_san/sql/sql_parse.cc:6133

    #21 0x55e4bbdea948 in mysql_execute_command(THD*) /data/builds/10.6_dbg_san/sql/sql_parse.cc:3829

    #22 0x55e4bbd4e2ea in mysql_parse(THD*, char*, unsigned int, Parser_state*) /data/builds/10.6_dbg_san/sql/sql_parse.cc:7901

    #23 0x55e4bbdbd012 in dispatch_command(enum_server_command, THD*, char*, unsigned int) /data/builds/10.6_dbg_san/sql/sql_parse.cc:1833

    #24 0x55e4bbdd25e4 in do_command(THD*) /data/builds/10.6_dbg_san/sql/sql_parse.cc:1365

    #25 0x55e4bc7ba5bc in do_handle_one_connection(CONNECT*, bool) /data/builds/10.6_dbg_san/sql/sql_connect.cc:1410

    #26 0x55e4bc7bd83f in handle_one_connection /data/builds/10.6_dbg_san/sql/sql_connect.cc:1312

    #27 0x55e4becbe631 in pfs_spawn_thread /data/builds/10.6_dbg_san/storage/perfschema/pfs.cc:2201

    #28 0x14d364474608 in start_thread /build/glibc-eX1tMB/glibc-2.31/nptl/pthread_create.c:477

    #29 0x14d3635c8292 in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x122292)

210427 10:18:54 [ERROR] mysqld got signal 11 ;

2021-04-27 10:45:26 0 [Note] /test/UBASAN_MD260121-mariadb-10.5.9-linux-x86_64-opt/bin/mysqld: ready for connections.

Version: '10.5.9-MariaDB'  socket: '/test/UBASAN_MD260121-mariadb-10.5.9-linux-x86_64-opt/socket.sock'  port: 10430  MariaDB Server

/data/builds/10.5_opt_san/sql/handler.cc:6343:40: runtime error: member call on null pointer of type 'struct Item'

    #0 0x559eb15ee1c9 in handler_index_cond_check /data/builds/10.5_opt_san/sql/handler.cc:6343

    #1 0x559eb37b9c9d in row_search_idx_cond_check /data/builds/10.5_opt_san/storage/innobase/row/row0sel.cc:3965

    #2 0x559eb37de8f3 in row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long) /data/builds/10.5_opt_san/storage/innobase/row/row0sel.cc:5265

    #3 0x559eb313635b in ha_innobase::index_read(unsigned char*, unsigned char const*, unsigned int, ha_rkey_function) /data/builds/10.5_opt_san/storage/innobase/handler/ha_innodb.cc:8758

    #4 0x559eb313854e in ha_innobase::index_first(unsigned char*) /data/builds/10.5_opt_san/storage/innobase/handler/ha_innodb.cc:9119

    #5 0x559eb313854e in ha_innobase::rnd_next(unsigned char*) /data/builds/10.5_opt_san/storage/innobase/handler/ha_innodb.cc:9212

    #6 0x559eb15b4f59 in handler::ha_rnd_next(unsigned char*) /data/builds/10.5_opt_san/sql/handler.cc:3066

    #7 0x559eb2369b18 in rr_sequential(READ_RECORD*) /data/builds/10.5_opt_san/sql/records.cc:519

    #8 0x559eb0d01b87 in JOIN_CACHE::join_matching_records(bool) /data/builds/10.5_opt_san/sql/sql_join_cache.cc:2261

    #9 0x559eb0cfdd07 in JOIN_CACHE::join_records(bool) /data/builds/10.5_opt_san/sql/sql_join_cache.cc:2093

    #10 0x559eb0536811 in sub_select_cache(JOIN*, st_join_table*, bool) /data/builds/10.5_opt_san/sql/sql_select.cc:20405

    #11 0x559eb06af396 in do_select /data/builds/10.5_opt_san/sql/sql_select.cc:20167

    #12 0x559eb06af396 in JOIN::exec_inner() /data/builds/10.5_opt_san/sql/sql_select.cc:4466

    #13 0x559eb06b2c69 in JOIN::exec() /data/builds/10.5_opt_san/sql/sql_select.cc:4246

    #14 0x559eb06a37fd in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /data/builds/10.5_opt_san/sql/sql_select.cc:4662

    #15 0x559eb06a8a93 in handle_select(THD*, LEX*, select_result*, unsigned long) /data/builds/10.5_opt_san/sql/sql_select.cc:417

    #16 0x559eb0367a81 in execute_sqlcom_select /data/builds/10.5_opt_san/sql/sql_parse.cc:6281

    #17 0x559eb03aafa2 in mysql_execute_command(THD*) /data/builds/10.5_opt_san/sql/sql_parse.cc:3977

    #18 0x559eb03351b7 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/builds/10.5_opt_san/sql/sql_parse.cc:8062

    #19 0x559eb038ea31 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/builds/10.5_opt_san/sql/sql_parse.cc:1889

    #20 0x559eb039b5d9 in do_command(THD*) /data/builds/10.5_opt_san/sql/sql_parse.cc:1370

    #21 0x559eb0b8fe2c in do_handle_one_connection(CONNECT*, bool) /data/builds/10.5_opt_san/sql/sql_connect.cc:1410

    #22 0x559eb0b92b64 in handle_one_connection /data/builds/10.5_opt_san/sql/sql_connect.cc:1312

    #23 0x559eb2ba454a in pfs_spawn_thread /data/builds/10.5_opt_san/storage/perfschema/pfs.cc:2201

    #24 0x152c8eb49608 in start_thread /build/glibc-eX1tMB/glibc-2.31/nptl/pthread_create.c:477

    #25 0x152c8dc9d292 in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x122292)

210427 10:45:32 [ERROR] mysqld got signal 11 ;

10.4.19-dbg>SELECT * FROM t,t AS b WHERE t.c=0 AND t.d=b.c AND t.c=b.d;

+------+------+------+------+

| c    | d    | c    | d    |

+------+------+------+------+

|    0 |    0 |    0 |    0 |

+------+------+------+------+

1 row in set (0.002 sec)