LSAN: memory leaks in sp_add_used_routine upon double view creation with missing user

SET GLOBAL log_bin_trust_function_creators=1;

CREATE FUNCTION f (c INT) RETURNS INT MODIFIES SQL DATA RETURN CONCAT ('1','2');

RENAME USER current_user TO '';

CREATE VIEW v AS SELECT f();

CREATE VIEW v AS WITH q(foo,bar) AS (SELECT * FROM v) SELECT * FROM q;

SHUTDOWN;

2024-06-15 15:44:39 0 [Note] /test/UBASAN_MD250524-mariadb-11.5.0-linux-x86_64-opt/bin/mariadbd: Shutdown complete

Warning: Memory not freed: 280

=================================================================

==2064173==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 280 byte(s) in 1 object(s) allocated from:

    #0 0x55935f94ec17 in __interceptor_malloc (/test/UBASAN_MD250524-mariadb-11.5.0-linux-x86_64-opt/bin/mariadbd+0x7ec6c17)

    #1 0x559363f4e234 in my_malloc /test/11.5_opt_san/mysys/my_malloc.c:93

    #2 0x559363ecde0e in init_dynamic_array2 /test/11.5_opt_san/mysys/array.c:73

    #3 0x5593626d76b3 in sp_add_used_routine(Query_tables_list*, Query_arena*, MDL_key const*, Sp_handler const*, TABLE_LIST*) /test/11.5_opt_san/sql/sp.cc:2358

    #4 0x5593626dcba9 in Sp_handler::add_used_routine(Query_tables_list*, Query_arena*, Database_qualified_name const*) const /test/11.5_opt_san/sql/sp.cc:2673

    #5 0x559361cb3f56 in Create_sp_func::create_with_db(THD*, Lex_ident_db_normalized const&, Lex_ident_routine const&, bool, List<Item>*) /test/11.5_opt_san/sql/item_create.cc:3007

    #6 0x559361c66d35 in Create_qfunc::create_func(THD*, st_mysql_const_lex_string const*, List<Item>*) /test/11.5_opt_san/sql/item_create.cc:2854

    #7 0x559361441d62 in MYSQLparse(THD*) /test/11.5_opt_san/sql/sql_yacc.yy:10712

    #8 0x559360212794 in parse_sql(THD*, Parser_state*, Object_creation_ctx*, bool) /test/11.5_opt_san/sql/sql_parse.cc:10168

    #9 0x5593609de6f8 in mysql_make_view(THD*, TABLE_SHARE*, TABLE_LIST*, bool) /test/11.5_opt_san/sql/sql_view.cc:1495

    #10 0x55935fdedd3a in open_table(THD*, TABLE_LIST*, Open_table_context*) /test/11.5_opt_san/sql/sql_base.cc:2141

    #11 0x55935fe04a59 in open_and_process_table /test/11.5_opt_san/sql/sql_base.cc:4165

    #12 0x55935fe04a59 in open_tables(THD*, DDL_options_st const&, TABLE_LIST**, unsigned int*, unsigned int, Prelocking_strategy*) /test/11.5_opt_san/sql/sql_base.cc:4651

    #13 0x55935fe08e2c in open_and_lock_tables(THD*, DDL_options_st const&, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*) /test/11.5_opt_san/sql/sql_base.cc:5625

    #14 0x5593609cafc5 in open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int) /test/11.5_opt_san/sql/sql_base.h:530

    #15 0x5593609cafc5 in mysql_create_view(THD*, TABLE_LIST*, enum_view_create_mode) /test/11.5_opt_san/sql/sql_view.cc:467

    #16 0x559360221dd2 in mysql_execute_command(THD*, bool) /test/11.5_opt_san/sql/sql_parse.cc:5610

    #17 0x55936023a382 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /test/11.5_opt_san/sql/sql_parse.cc:7815

    #18 0x559360245853 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /test/11.5_opt_san/sql/sql_parse.cc:1892

    #19 0x559360252428 in do_command(THD*, bool) /test/11.5_opt_san/sql/sql_parse.cc:1405

    #20 0x559360bca6fc in do_handle_one_connection(CONNECT*, bool) /test/11.5_opt_san/sql/sql_connect.cc:1445

    #21 0x559360bcccfc in handle_one_connection /test/11.5_opt_san/sql/sql_connect.cc:1347

    #22 0x14fdcfa97ad9 in start_thread nptl/pthread_create.c:444

SUMMARY: AddressSanitizer: 280 byte(s) leaked in 1 allocation(s).