SELECT 

  EXISTS ( 

    WITH x ( x ) AS ( SELECT 1 ) 

    SELECT NULL 

    WHERE ( 1 , 1 ) = 

         ( SELECT 

           1 , ( ( x , 1.000000 ) , 1 ) 

           IN 

           (SELECT 'x' , 'x' 

            WHERE ( ( 'x' ) ) 

            UNION 

            SELECT 1 , x 

            HAVING 1 != 1 

           )

           FROM x 

          ) 

  );

mariadbd(my_print_stacktrace+0x32)[0x55ab626be7c2]

mariadbd(handle_fatal_signal+0x488)[0x55ab62197cf8]

/lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7fe667658520]

mariadbd(_ZN5TABLE11add_tmp_keyEjjPFjPhES0_b+0x1bc)[0x55ab620253ec]

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mariadbd(_ZN26select_singlerow_subselect9send_dataER4ListI4ItemE+0x3f)[0x55ab61ec193f]

mariadbd(+0x89bf74)[0x55ab61f8df74]

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mariadbd(_ZN14Item_subselect4execEv+0x4c)[0x55ab6227673c]

mariadbd(_ZN21Item_exists_subselect7val_intEv+0x23)[0x55ab622764a3]

mariadbd(_ZNK12Type_handler14Item_send_longEP4ItemP8ProtocolP8st_value+0x1d)[0x55ab620ee89d]

mariadbd(_ZN8Protocol19send_result_set_rowEP4ListI4ItemE+0xea)[0x55ab61e4ccfa]

mariadbd(_ZN11select_send9send_dataER4ListI4ItemE+0x37)[0x55ab61ecb6a7]

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mariadbd(_Z12mysql_selectP3THDP10TABLE_LISTR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x12c)[0x55ab61fa4f7c]

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mariadbd(_Z21mysql_execute_commandP3THDb+0x419e)[0x55ab61f27f0e]

mariadbd(_Z11mysql_parseP3THDPcjP12Parser_state+0x1e7)[0x55ab61f29237]

mariadbd(_Z16dispatch_command19enum_server_commandP3THDPcjb+0x14bd)[0x55ab61f2ba1d]

mariadbd(_Z10do_commandP3THDb+0x138)[0x55ab61f2d818]

mariadbd(_Z24do_handle_one_connectionP7CONNECTb+0x3bf)[0x55ab620553af]

mariadbd(handle_one_connection+0x5d)[0x55ab620556fd]

mariadbd(+0xcd1906)[0x55ab623c3906]

/lib/x86_64-linux-gnu/libc.so.6(+0x94b43)[0x7fe6676aab43]

/lib/x86_64-linux-gnu/libc.so.6(clone+0x44)[0x7fe66773bbb4]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7fe5f80130d8): SELECT EXISTS ( WITH x ( x ) AS ( SELECT 1 ) SELECT NULL WHERE ( 1 , 1 ) = ( SELECT 1 , ( ( x , 1.000000 ) , 1 ) IN ( SELECT 'x' , 'x' WHERE ( ( 'x' ) ) UNION SELECT 1 , x HAVING 1 != 1 ) FROM x ) )

Connection ID (thread ID): 4

Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on,not_null_range_scan=off,hash_join_cardinality=on