mysys/stacktrace.c:270(my_print_stacktrace)[0x5654ce4541de]

sql/signal_handler.cc:168(handle_fatal_signal)[0x5654cdeee6d7]

sigaction.c:0(__restore_rt)[0x7f24f1a966d0]

:0(__strlen_sse42)[0x7f24efe7a67f]

sql/sql_explain.cc:1389(String_list::append_str(st_mem_root*, char const*))[0x5654cde13672]

sql/sql_explain.cc:1161(Explain_index_use::set(st_mem_root*, st_key*, unsigned int))[0x5654cde13747]

sql/sql_select.cc:25113(st_join_table::save_explain_data(Explain_table_access*, unsigned long long, bool, st_join_table*))[0x5654cdd68e85]

sql/sql_select.cc:25624(JOIN::save_explain_data_intern(Explain_query*, bool, bool, bool, char const*))[0x5654cdd6a8c8]

sql/sql_select.cc:3790(JOIN::save_explain_data(Explain_query*, bool, bool, bool, bool))[0x5654cdd6aa20]

sql/sql_select.cc:1410(JOIN::build_explain())[0x5654cdd6ac6d]

sql/sql_select.cc:1454(JOIN::optimize())[0x5654cdd714e7]

sql/sql_select.cc:4220(mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*))[0x5654cdd72a94]

sql/sql_select.cc:382(handle_select(THD*, LEX*, select_result*, unsigned long))[0x5654cdd7362c]

sql/sql_parse.cc:6548(execute_sqlcom_select(THD*, TABLE_LIST*))[0x5654cdc29cd9]

sql/sql_parse.cc:3769(mysql_execute_command(THD*))[0x5654cdd1fb74]

sql/sql_parse.cc:8092(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x5654cdd2232b]

sql/sql_parse.cc:1850(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x5654cdd24e95]

sql/sql_parse.cc:1397(do_command(THD*))[0x5654cdd25cfe]

sql/sql_connect.cc:1402(do_handle_one_connection(CONNECT*))[0x5654cddf61aa]

sql/sql_connect.cc:1310(handle_one_connection)[0x5654cddf62cd]

pthread_create.c:0(start_thread)[0x7f24f1a8ee25]

/lib64/libc.so.6(clone+0x6d)[0x7f24efe32bad]

MDEV-17222 Reproducible server crash in String_list::append_str or

           in Field_iterator_table::create_item

When IN predicate is converted to IN subquery we have to ensure that

any item from the select list of the subquery has some name and this name

is unique across the select list.

This was not guaranteed by the code before the patch for MDEV-17222.

If the name of an item of the select list was not set, and this happened

for binary constants, then the server crashed. If the first row in the IN

list contained the same constant in two different positions then the server

returned an error message.

This was fixed by providing all constants in the first row of the IN list

with generated names.