CREATE TABLE t1(a INT);

DELIMITER $$;

CREATE FUNCTION f1() RETURNS VARCHAR(16383)

BEGIN

  INSERT INTO t1 VALUES(1);

  RETURN 'test';

END;

$$

DELIMITER ;$$

CREATE OR REPLACE TABLE t1 AS SELECT f1();

LOCK TABLE t1 WRITE;

CREATE OR REPLACE TABLE t1 AS SELECT f1();

UNLOCK TABLES;

DROP FUNCTION f1;

DROP TABLE t1;

      if ((create_info.options & HA_LEX_CREATE_REPLACE) &&

          !create_info.tmp_table())

      {

        TABLE_LIST *duplicate;

        if ((duplicate= unique_table(thd, lex->query_tables,

                                     lex->query_tables->next_global,

                                     0)))

        {

          update_non_unique_table_error(lex->query_tables, "CREATE",

                                        duplicate);

          res= TRUE;

          goto end_with_restore_list;

        }

      }

    /*

      Skip if marked to be excluded (could be a derived table) or if

      entry is a prelocking placeholder.

    */

    if (res->select_lex &&

        !res->select_lex->exclude_from_table_unique_test &&

        !res->prelocking_placeholder)

      break;

mysqld: /data/src/10.3/sql/table_cache.cc:1147: bool tdc_remove_table(THD*, enum_tdc_remove_table_type, const char*, const char*, bool): Assertion `element->all_tables.is_empty() || remove_type != TDC_RT_REMOVE_ALL' failed.

180420 17:59:32 [ERROR] mysqld got signal 6 ;

#7  0x00007fe3ce535ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6

#8  0x000055b9b0a18e85 in tdc_remove_table (thd=0x7fe360000b00, remove_type=TDC_RT_REMOVE_ALL, db=0x7fe360013fd8 "test", table_name=0x7fe360013950 "t1", kill_delayed_threads=false) at /data/src/10.3/sql/table_cache.cc:1147

#9  0x000055b9b08c1e4d in mysql_rm_table_no_locks (thd=0x7fe360000b00, tables=0x7fe3cc2335d0, if_exists=false, drop_temporary=false, drop_view=false, drop_sequence=false, dont_log_query=true, dont_free_locks=true) at /data/src/10.3/sql/sql_table.cc:2502

#10 0x000055b9b08c8d60 in create_table_impl (thd=0x7fe360000b00, orig_db=0x7fe3600139a0, orig_table_name=0x7fe3600139b0, db=0x7fe3600139a0, table_name=0x7fe3600139b0, path=0x7fe3cc233d00 "./test/t1", options=..., create_info=0x7fe3cc2357e0, alter_info=0x7fe3cc235720, create_table_mode=1, is_trans=0x0, key_info=0x7fe3cc233ce0, key_count=0x7fe3cc233cd4, frm=0x7fe3cc233cf0) at /data/src/10.3/sql/sql_table.cc:4878

#11 0x000055b9b08c9802 in mysql_create_table_no_lock (thd=0x7fe360000b00, db=0x7fe3600139a0, table_name=0x7fe3600139b0, create_info=0x7fe3cc2357e0, alter_info=0x7fe3cc235720, is_trans=0x0, create_table_mode=1, table_list=0x7fe360013988) at /data/src/10.3/sql/sql_table.cc:5082

#12 0x000055b9b07c72c8 in select_create::create_table_from_items (this=0x7fe360015f88, thd=0x7fe360000b00, items=0x7fe3cc235160, lock=0x7fe3cc235150, hooks=0x7fe3cc2351a0) at /data/src/10.3/sql/sql_insert.cc:4228

#13 0x000055b9b07c7a25 in select_create::prepare (this=0x7fe360015f88, _values=..., u=0x7fe360004948) at /data/src/10.3/sql/sql_insert.cc:4403

#14 0x000055b9b083bbf7 in JOIN::prepare (this=0x7fe360016078, tables_init=0x0, wild_num=0, conds_init=0x0, og_num=0, order_init=0x0, skip_order_by=false, group_init=0x0, having_init=0x0, proc_param_init=0x0, select_lex_arg=0x7fe3600050c0, unit_arg=0x7fe360004948) at /data/src/10.3/sql/sql_select.cc:1331

#15 0x000055b9b08457db in mysql_select (thd=0x7fe360000b00, tables=0x0, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2416184064, result=0x7fe360015f88, unit=0x7fe360004948, select_lex=0x7fe3600050c0) at /data/src/10.3/sql/sql_select.cc:4130

#16 0x000055b9b0837deb in handle_select (thd=0x7fe360000b00, lex=0x7fe360004880, result=0x7fe360015f88, setup_tables_done_option=0) at /data/src/10.3/sql/sql_select.cc:382

#17 0x000055b9b07fad44 in mysql_execute_command (thd=0x7fe360000b00) at /data/src/10.3/sql/sql_parse.cc:4238

#18 0x000055b9b0806cf4 in mysql_parse (thd=0x7fe360000b00, rawbuf=0x7fe360013888 "CREATE OR REPLACE TABLE t1 AS SELECT f1()", length=41, parser_state=0x7fe3cc236620, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:8001

#19 0x000055b9b07f44d7 in dispatch_command (command=COM_QUERY, thd=0x7fe360000b00, packet=0x7fe36001bab1 "CREATE OR REPLACE TABLE t1 AS SELECT f1()", packet_length=41, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1846

#20 0x000055b9b07f2f16 in do_command (thd=0x7fe360000b00) at /data/src/10.3/sql/sql_parse.cc:1391

#21 0x000055b9b0955a13 in do_handle_one_connection (connect=0x55b9b4016920) at /data/src/10.3/sql/sql_connect.cc:1402

#22 0x000055b9b09557a0 in handle_one_connection (arg=0x55b9b4016920) at /data/src/10.3/sql/sql_connect.cc:1308

#23 0x00007fe3d020c494 in start_thread (arg=0x7fe3cc237700) at pthread_create.c:333

#24 0x00007fe3ce5f293f in clone () from /lib/x86_64-linux-gnu/libc.so.6