CREATE TABLE t (c INT);

SELECT * FROM t WHERE c = 1 AND ( 3 = 0 OR  (SELECT c = 1 OR (SELECT 3 WHERE c = c ) = 3));

mysqld: /test/10.9_dbg/sql/sql_select.cc:17967: virtual COND* Item_cond::remove_eq_conds(THD*, Item::cond_result*, bool): Assertion `functype() == ((Item_cond *) new_item)->functype()' failed.

Core was generated by `/test/MD190722-mariadb-10.9.2-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.

Program terminated with signal SIGABRT, Aborted.

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

[Current thread is 1 (Thread 0x14c6a80a3700 (LWP 519539))]

(gdb) bt

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

#1  0x000014c6bf03b859 in __GI_abort () at abort.c:79

#2  0x000014c6bf03b729 in __assert_fail_base (fmt=0x14c6bf1d1588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x558c7d40aeb8 "functype() == ((Item_cond *) new_item)->functype()", file=0x558c7d409948 "/test/10.9_dbg/sql/sql_select.cc", line=17967, function=<optimized out>) at assert.c:92

#3  0x000014c6bf04cfd6 in __GI___assert_fail (assertion=assertion@entry=0x558c7d40aeb8 "functype() == ((Item_cond *) new_item)->functype()", file=file@entry=0x558c7d409948 "/test/10.9_dbg/sql/sql_select.cc", line=line@entry=17967, function=function@entry=0x558c7d40aef0 "virtual COND* Item_cond::remove_eq_conds(THD*, Item::cond_result*, bool)") at assert.c:101

#4  0x0000558c7c86b210 in Item_cond::remove_eq_conds (this=0x14c67001ff90, thd=0x14c670000db8, cond_value=0x14c670020d00, top_level_arg=<optimized out>) at /test/10.9_dbg/sql/sql_select.cc:17967

#5  0x0000558c7c8524f3 in optimize_cond (join=join@entry=0x14c6700209a8, conds=0x14c67001ff90, join_list=0x14c670013ef0, ignore_on_conds=ignore_on_conds@entry=false, cond_value=cond_value@entry=0x14c670020d00, cond_equal=cond_equal@entry=0x14c670020e28, flags=1) at /test/10.9_dbg/sql/sql_select.cc:17676

#6  0x0000558c7c897883 in JOIN::optimize_inner (this=this@entry=0x14c6700209a8) at /test/10.9_dbg/sql/sql_select.cc:2231

#7  0x0000558c7c8986ee in JOIN::optimize (this=this@entry=0x14c6700209a8) at /test/10.9_dbg/sql/sql_select.cc:1846

#8  0x0000558c7c8987e1 in mysql_select (thd=thd@entry=0x14c670000db8, tables=0x14c670014310, fields=@0x14c670013fd8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x14c6700142c8, last = 0x14c6700142c8, elements = 1}, <No data fields>}, conds=0x14c67001ff90, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x14c670020980, unit=0x14c670004fd8, select_lex=0x14c670013d38) at /test/10.9_dbg/sql/sql_select.cc:5031

#9  0x0000558c7c89902a in handle_select (thd=thd@entry=0x14c670000db8, lex=lex@entry=0x14c670004f00, result=result@entry=0x14c670020980, setup_tables_done_option=setup_tables_done_option@entry=0) at /test/10.9_dbg/sql/sql_select.cc:579

#10 0x0000558c7c803fde in execute_sqlcom_select (thd=thd@entry=0x14c670000db8, all_tables=0x14c670014310) at /test/10.9_dbg/sql/sql_parse.cc:6260

#11 0x0000558c7c8102fc in mysql_execute_command (thd=thd@entry=0x14c670000db8, is_called_from_prepared_stmt=is_called_from_prepared_stmt@entry=false) at /test/10.9_dbg/sql/sql_parse.cc:3944

#12 0x0000558c7c7fe2ba in mysql_parse (thd=thd@entry=0x14c670000db8, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x14c6a80a2470) at /test/10.9_dbg/sql/sql_parse.cc:8036

#13 0x0000558c7c80b8b0 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x14c670000db8, packet=packet@entry=0x14c67000b6c9 "SELECT *  FROM t WHERE c = 1 AND ( 3 = 0 OR  (SELECT c = 1 OR (SELECT 3 WHERE c = c ) = 3))", packet_length=packet_length@entry=91, blocking=blocking@entry=true) at /test/10.9_dbg/sql/sql_class.h:1364

#14 0x0000558c7c80dfb8 in do_command (thd=0x14c670000db8, blocking=blocking@entry=true) at /test/10.9_dbg/sql/sql_parse.cc:1407

#15 0x0000558c7c96f6c2 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x558c80133b08, put_in_cache=put_in_cache@entry=true) at /test/10.9_dbg/sql/sql_connect.cc:1418

#16 0x0000558c7c96fbcb in handle_one_connection (arg=0x558c80133b08) at /test/10.9_dbg/sql/sql_connect.cc:1312

#17 0x000014c6bf54c609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#18 0x000014c6bf138133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95