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  1. MariaDB Server
  2. MDEV-17830

Server crashes in Item_null_result::field_type upon SELECT with CHARSET(date) and ROLLUP

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      Description

      CREATE TABLE t (d DATE) ENGINE=MyISAM;
      INSERT INTO t VALUES ('2018-12-12');
      SELECT CHARSET(d) AS f FROM t GROUP BY d WITH ROLLUP; 
       
      # Cleanup
      DROP TABLE t;
      

      10.1 8324e5e84dc

      #3  <signal handler called>
      #4  0x0000555e4ffb80e7 in Item_null_result::field_type (this=0x7f4408445d98) at /data/src/10.1/sql/item.h:2612
      #5  0x0000555e4fedfe23 in Item_ref::field_type (this=0x7f4408444368) at /data/src/10.1/sql/item.h:3939
      #6  0x0000555e5018c777 in Item::cmp_type (this=0x7f4408444368) at /data/src/10.1/sql/item.cc:658
      #7  0x0000555e4fe83287 in Item::charset_for_protocol (this=0x7f4408444368) at /data/src/10.1/sql/item.h:1374
      #8  0x0000555e502110cd in Item_func_charset::val_str (this=0x7f4408443268, str=0x7f4412eecdd0) at /data/src/10.1/sql/item_strfunc.cc:3439
      #9  0x0000555e5019bc3f in Item::send (this=0x7f4408443268, protocol=0x7f440a0d5600, buffer=0x7f4412eecdd0) at /data/src/10.1/sql/item.cc:6398
      #10 0x0000555e4fe80154 in Protocol::send_result_set_row (this=0x7f440a0d5600, row_items=0x7f4408444298) at /data/src/10.1/sql/protocol.cc:914
      #11 0x0000555e4fef881a in select_send::send_data (this=0x7f4408443ba0, items=...) at /data/src/10.1/sql/sql_class.cc:2747
      #12 0x0000555e4ffb017f in JOIN::rollup_send_data (this=0x7f4408443bc0, idx=0) at /data/src/10.1/sql/sql_select.cc:24032
      #13 0x0000555e4ffa5c62 in end_send_group (join=0x7f4408443bc0, join_tab=0x0, end_of_records=true) at /data/src/10.1/sql/sql_select.cc:19769
      #14 0x0000555e4ffa213e in do_select (join=0x7f4408443bc0, fields=0x7f4408443fc0, table=0x0, procedure=0x0) at /data/src/10.1/sql/sql_select.cc:18093
      #15 0x0000555e4ff7cbac in JOIN::exec_inner (this=0x7f4408443bc0) at /data/src/10.1/sql/sql_select.cc:3275
      #16 0x0000555e4ff79e3d in JOIN::exec (this=0x7f4408443bc0) at /data/src/10.1/sql/sql_select.cc:2562
      #17 0x0000555e4ff7d3d3 in mysql_select (thd=0x7f440a0d5070, rref_pointer_array=0x7f440a0d9550, tables=0x7f4408443380, wild_num=0, fields=..., conds=0x0, og_num=1, order=0x0, group=0x7f4408443a88, having=0x0, proc_param=0x0, select_options=2147748608, result=0x7f4408443ba0, unit=0x7f440a0d8ba8, select_lex=0x7f440a0d92a8) at /data/src/10.1/sql/sql_select.cc:3499
      #18 0x0000555e4ff72a8c in handle_select (thd=0x7f440a0d5070, lex=0x7f440a0d8ae0, result=0x7f4408443ba0, setup_tables_done_option=0) at /data/src/10.1/sql/sql_select.cc:388
      #19 0x0000555e4ff4241b in execute_sqlcom_select (thd=0x7f440a0d5070, all_tables=0x7f4408443380) at /data/src/10.1/sql/sql_parse.cc:5948
      #20 0x0000555e4ff387ef in mysql_execute_command (thd=0x7f440a0d5070) at /data/src/10.1/sql/sql_parse.cc:2993
      #21 0x0000555e4ff4605f in mysql_parse (thd=0x7f440a0d5070, rawbuf=0x7f4408443088 "SELECT CHARSET(d) AS f FROM t GROUP BY d WITH ROLLUP", length=52, parser_state=0x7f4412eee5e0) at /data/src/10.1/sql/sql_parse.cc:7466
      #22 0x0000555e4ff348c0 in dispatch_command (command=COM_QUERY, thd=0x7f440a0d5070, packet=0x7f440cbf9071 "", packet_length=52) at /data/src/10.1/sql/sql_parse.cc:1495
      #23 0x0000555e4ff33645 in do_command (thd=0x7f440a0d5070) at /data/src/10.1/sql/sql_parse.cc:1124
      #24 0x0000555e5006e194 in do_handle_one_connection (thd_arg=0x7f440a0d5070) at /data/src/10.1/sql/sql_connect.cc:1330
      #25 0x0000555e5006def8 in handle_one_connection (arg=0x7f440a0d5070) at /data/src/10.1/sql/sql_connect.cc:1242
      #26 0x0000555e5042c15e in pfs_spawn_thread (arg=0x7f4410839ef0) at /data/src/10.1/storage/perfschema/pfs.cc:1861
      #27 0x00007f4412b6e494 in start_thread (arg=0x7f4412eefb00) at pthread_create.c:333
      #28 0x00007f441114293f in clone () from /lib/x86_64-linux-gnu/libc.so.6
      

      Reproducible on 10.1 and 10.2, debug and non-debug builds, at least MyISAM and Aria.
      Not reproducible on 10.3 or 10.4.

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              • Assignee:
                bar Alexander Barkov
                Reporter:
                elenst Elena Stepanova
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                • Created:
                  Updated:
                  Resolved: