LeakSanitizer errors in String::real_alloc / cmp_item_sort_string_in_static::store_value

CREATE TABLE t1 (a INT);

INSERT INTO t1 VALUES (1),(2);

SELECT * FROM t1 WHERE ('62','0') IN ((62,NULL),(62,56));

# Cleanup

DROP TABLE t1;

==166365==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 32 byte(s) in 1 object(s) allocated from:

    #0 0x7f8b094b89cf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69

    #1 0x55dc8f2eaa44 in my_malloc /data/src/10.3/mysys/my_malloc.c:101

    #2 0x55dc8d982f86 in String::real_alloc(unsigned long) /data/src/10.3/sql/sql_string.cc:44

    #3 0x55dc8d4e87f7 in String::alloc(unsigned long) /data/src/10.3/sql/sql_string.h:383

    #4 0x55dc8d9836c0 in String::set_int(long long, bool, charset_info_st const*) /data/src/10.3/sql/sql_string.cc:127

    #5 0x55dc8df3bad6 in Item_int::val_str(String*) /data/src/10.3/sql/item.cc:3771

    #6 0x55dc8dfda44e in cmp_item_sort_string_in_static::store_value(Item*) /data/src/10.3/sql/item_cmpfunc.h:1725

    #7 0x55dc8dc9131a in cmp_item::store_value_by_template(THD*, cmp_item*, Item*) /data/src/10.3/sql/item_cmpfunc.h:1516

    #8 0x55dc8dfb97d3 in cmp_item_row::store_value_by_template(THD*, cmp_item*, Item*) /data/src/10.3/sql/item_cmpfunc.cc:3966

    #9 0x55dc8dfb62d9 in in_row::set(unsigned int, Item*) /data/src/10.3/sql/item_cmpfunc.cc:3645

    #10 0x55dc8dfbbc0e in Item_func_in::fix_in_vector() /data/src/10.3/sql/item_cmpfunc.cc:4271

    #11 0x55dc8dfbc936 in Item_func_in::fix_for_row_comparison_using_bisection(THD*) /data/src/10.3/sql/item_cmpfunc.cc:4374

    #12 0x55dc8dc7aed6 in Type_handler_row::Item_func_in_fix_comparator_compatible_types(THD*, Item_func_in*) const /data/src/10.3/sql/sql_type.cc:4017

    #13 0x55dc8dfbb7cc in Item_func_in::fix_length_and_dec() /data/src/10.3/sql/item_cmpfunc.cc:4238

    #14 0x55dc8e01c5ff in Item_func::fix_fields(THD*, Item**) /data/src/10.3/sql/item_func.cc:370

    #15 0x55dc8dfbae00 in Item_func_in::fix_fields(THD*, Item**) /data/src/10.3/sql/item_cmpfunc.cc:4163

    #16 0x55dc8d50b2ca in Item::fix_fields_if_needed(THD*, Item**) /data/src/10.3/sql/item.h:831

    #17 0x55dc8d50b300 in Item::fix_fields_if_needed_for_scalar(THD*, Item**) /data/src/10.3/sql/item.h:835

    #18 0x55dc8d62de78 in Item::fix_fields_if_needed_for_bool(THD*, Item**) /data/src/10.3/sql/item.h:839

    #19 0x55dc8d625a9e in setup_conds(THD*, TABLE_LIST*, List<TABLE_LIST>&, Item**) /data/src/10.3/sql/sql_base.cc:8353

    #20 0x55dc8d8160ce in setup_without_group /data/src/10.3/sql/sql_select.cc:675

    #21 0x55dc8d81c45a in JOIN::prepare(TABLE_LIST*, unsigned int, Item*, unsigned int, st_order*, bool, st_order*, Item*, st_order*, st_select_lex*, st_select_lex_unit*) /data/src/10.3/sql/sql_select.cc:1181

    #22 0x55dc8d83dec5 in 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*) /data/src/10.3/sql/sql_select.cc:4371

    #23 0x55dc8d8de4b4 in mysql_explain_union(THD*, st_select_lex_unit*, select_result*) /data/src/10.3/sql/sql_select.cc:26567

    #24 0x55dc8d787e33 in execute_sqlcom_select /data/src/10.3/sql/sql_parse.cc:6279

    #25 0x55dc8d7764b6 in mysql_execute_command(THD*) /data/src/10.3/sql/sql_parse.cc:3871

    #26 0x55dc8d79217f in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.3/sql/sql_parse.cc:7855

    #27 0x55dc8d768fae in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.3/sql/sql_parse.cc:1852

    #28 0x55dc8d765b46 in do_command(THD*) /data/src/10.3/sql/sql_parse.cc:1398

    #29 0x55dc8db2df5b in do_handle_one_connection(CONNECT*) /data/src/10.3/sql/sql_connect.cc:1404

SUMMARY: AddressSanitizer: 32 byte(s) leaked in 1 allocation(s).