DNAMES: Server crashes in Item_dyncol_get::get_dyn_value => String::charset on COLUMN_GET with NULL as a column number/name

#3  0x083cea84 in handle_fatal_signal (sig=11)

    at sql/signal_handler.cc:262

#4  <signal handler called>

#5  0x081acb0a in String::charset (this=0x0)

    at sql/sql_string.h:113

#6  0x08452d3a in Item_dyncol_get::get_dyn_value (this=0x971ed80, val=0xad189984,

    tmp=0xad1899f0) at sql/item_strfunc.cc:4172

#7  0x08452f8f in Item_dyncol_get::val_str (this=0x971ed80, str_result=0xad18a0b4)

    at sql/item_strfunc.cc:4232

#8  0x0847a238 in Item_char_typecast::val_str (this=0x971ee08, str=0xad18a0b4)

    at sql/item_timefunc.cc:2302

#9  0x083eb321 in Item::send (this=0x971ee08, protocol=0x966f7b0, buffer=0xad18a0b4)

    at sql/item.cc:6317

#10 0x081aad13 in Protocol::send_result_set_row (this=0x966f7b0, row_items=0x9670e78)

    at sql/protocol.cc:900

#11 0x08207a4e in select_send::send_data (this=0x971efd8, items=...)

    at sql/sql_class.cc:2275

#12 0x0826d5cb in JOIN::exec (this=0x971efe8)

    at sql/sql_select.cc:2229

#13 0x0826ff66 in mysql_select (thd=0x966f350, rref_pointer_array=0x9670f20, tables=0x0,

    wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0,

    proc_param=0x0, select_options=2147748608, result=0x971efd8, unit=0x9670930,

    select_lex=0x9670de0) at sql/sql_select.cc:3050

#14 0x08267932 in handle_select (thd=0x966f350, lex=0x96708cc, result=0x971efd8,

    setup_tables_done_option=0) at sql/sql_select.cc:313

#15 0x08243498 in execute_sqlcom_select (thd=0x966f350, all_tables=0x0)

    at sql/sql_parse.cc:4621

#16 0x0823c432 in mysql_execute_command (thd=0x966f350)

    at sql/sql_parse.cc:2189

#17 0x08245a89 in mysql_parse (thd=0x966f350,

    rawbuf=0x971ea48 "SELECT COLUMN_GET( COLUMN_CREATE( 'col', 'val' ), NULL AS CHAR )",

    length=64, parser_state=0xad18ada4) at sql/sql_parse.cc:5736

#18 0x08239ed4 in dispatch_command (command=COM_QUERY, thd=0x966f350, packet=0x9718d19 "",

    packet_length=64) at sql/sql_parse.cc:1055

#19 0x08239399 in do_command (thd=0x966f350)

    at sql/sql_parse.cc:794

#20 0x08325471 in do_handle_one_connection (thd_arg=0x966f350)

    at sql/sql_connect.cc:1253

#21 0x08324fbc in handle_one_connection (arg=0x966f350)

    at sql/sql_connect.cc:1168

#22 0x0854fd1b in pfs_spawn_thread (arg=0x975fae0)

    at storage/perfschema/pfs.cc:1015

#23 0xb77fbb25 in start_thread () from /lib/libpthread.so.0

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

Query (0x971ea48): SELECT COLUMN_GET( COLUMN_CREATE( 'col', 'val' ), NULL AS CHAR )

Connection ID (thread ID): 2

Status: NOT_KILLED

bzr version-info

revision-id: sanja@askmonty.org-20120823152900-3ngz79t2yvtq28f6

date: 2012-08-23 18:29:00 +0300

build-date: 2012-08-26 22:22:52 +0400

revno: 3496

SELECT COLUMN_GET( COLUMN_CREATE( 'col', 'val' ), NULL AS CHAR );