UBSAN: runtime error: member access within null pointer of type 'struct SPIDER_FIELD_CHAIN' and SIGSEGV in spider_db_open_item_ident on SELECT

INSTALL PLUGIN Spider SONAME 'ha_spider.so';

CREATE SERVER s FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET '../socket.sock',DATABASE'',USER'',PASSWORD'');

CREATE TABLE t (c BLOB) ENGINE=InnoDB;

CREATE TABLE ts (c BLOB) ENGINE=Spider COMMENT='WRAPPER "mysql",srv "s",TABLE "t"';

SELECT TRIM(BOTH ' ' FROM c) FROM ts ORDER BY c;

/test/11.0_dbg_san/storage/spider/spd_db_conn.cc:7624:32: runtime error: member access within null pointer of type 'struct SPIDER_FIELD_CHAIN'

    #0 0x150d1b92ad7d in spider_db_open_item_ident(Item_ident*, ha_spider*, spider_string*, char const*, unsigned int, unsigned int, bool, spider_fields*) /test/11.0_dbg_san/storage/spider/spd_db_conn.cc:7624

    #1 0x150d1b92d7cd in spider_db_open_item_field(Item_field*, ha_spider*, spider_string*, char const*, unsigned int, unsigned int, bool, spider_fields*) /test/11.0_dbg_san/storage/spider/spd_db_conn.cc:7759

    #2 0x150d1b932a4c in spider_db_print_item_type(Item*, Field*, ha_spider*, spider_string*, char const*, unsigned int, unsigned int, bool, spider_fields*) /test/11.0_dbg_san/storage/spider/spd_db_conn.cc:7387

    #3 0x150d1bc59e48 in spider_mbase_handler::append_order_by(st_order*, spider_string*, char const*, unsigned int, bool, spider_fields*) /test/11.0_dbg_san/storage/spider/spd_db_mysql.cc:15213

    #4 0x150d1bc5a095 in spider_mbase_handler::append_order_by_part(st_order*, char const*, unsigned int, bool, spider_fields*, unsigned long) /test/11.0_dbg_san/storage/spider/spd_db_mysql.cc:15190

    #5 0x150d1bc768d2 in spider_group_by_handler::init_scan() /test/11.0_dbg_san/storage/spider/spd_group_by_handler.cc:1347

    #6 0x55f4e0f82c9a in Pushdown_query::execute(JOIN*) /test/11.0_dbg_san/sql/group_by_handler.cc:49

    #7 0x55f4e0e0c68f in do_select /test/11.0_dbg_san/sql/sql_select.cc:22665

    #8 0x55f4e0e0c68f in JOIN::exec_inner() /test/11.0_dbg_san/sql/sql_select.cc:4900

    #9 0x55f4e0e0f916 in JOIN::exec() /test/11.0_dbg_san/sql/sql_select.cc:4677

    #10 0x55f4e0dfe0c1 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*) /test/11.0_dbg_san/sql/sql_select.cc:5158

    #11 0x55f4e0e0251c in handle_select(THD*, LEX*, select_result*, unsigned long long) /test/11.0_dbg_san/sql/sql_select.cc:616

    #12 0x55f4e0974a01 in execute_sqlcom_select /test/11.0_dbg_san/sql/sql_parse.cc:6279

    #13 0x55f4e09d5ef5 in mysql_execute_command(THD*, bool) /test/11.0_dbg_san/sql/sql_parse.cc:3949

    #14 0x55f4e0a05973 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /test/11.0_dbg_san/sql/sql_parse.cc:8014

    #15 0x55f4e0a15707 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /test/11.0_dbg_san/sql/sql_parse.cc:1894

    #16 0x55f4e0a23542 in do_command(THD*, bool) /test/11.0_dbg_san/sql/sql_parse.cc:1407

    #17 0x55f4e13f88b5 in do_handle_one_connection(CONNECT*, bool) /test/11.0_dbg_san/sql/sql_connect.cc:1416

    #18 0x55f4e13f9dd0 in handle_one_connection /test/11.0_dbg_san/sql/sql_connect.cc:1318

    #19 0x150d3ea94b42 in start_thread nptl/pthread_create.c:442

    #20 0x150d3eb269ff  (/lib/x86_64-linux-gnu/libc.so.6+0x1269ff)

Compiled with GCC >=7.5.0 (I use GCC 11.3.0) and:

    -DWITH_ASAN=ON -DWITH_ASAN_SCOPE=ON -DWITH_UBSAN=ON -DWITH_RAPID=OFF -DWSREP_LIB_WITH_ASAN=ON

Set before execution:

    export UBSAN_OPTIONS=print_stacktrace=1