LP:601156 - RQG: item_subselect.cc:4635: virtual void subselect_partial_match_engine::print(String*, enum_query_type): Assertion `(0)' failed.

When executing the query below, MariaDB 5.3 asserts as follows:

mysqld: item_subselect.cc:4635: virtual void subselect_partial_match_engine::print(String*, enum_query_type): Assertion `(0)' failed.

The assertion seems to be introduced by the following patch:

https://lists.launchpad.net/maria-developers/msg02447.html

Backtrace:

#8 0x00897de8 in __assert_fail () from /lib/libc.so.6
#9 0x08232040 in subselect_partial_match_engine::print (this=0x99c2da8, str=0xb6e5f33c, query_type=QT_ORDINARY) at item_subselect.cc:4635
#10 0x08228d59 in Item_subselect::print (this=0x98e23c0, str=0xb6e5f33c, query_type=QT_ORDINARY) at item_subselect.cc:559
#11 0x0822c8eb in Item_in_subselect::print (this=0x98e23c0, str=0xb6e5f33c, query_type=QT_ORDINARY) at item_subselect.cc:1985
#12 0x081da127 in Item_func::print_args (this=0x9991ef0, str=0xb6e5f33c, from=0, query_type=QT_ORDINARY) at item_func.cc:418
#13 0x081da0ad in Item_func::print (this=0x9991ef0, str=0xb6e5f33c, query_type=QT_ORDINARY) at item_func.cc:407
#14 0x081da127 in Item_func::print_args (this=0x98e24d0, str=0xb6e5f33c, from=0, query_type=QT_ORDINARY) at item_func.cc:418
#15 0x081da0ad in Item_func::print (this=0x98e24d0, str=0xb6e5f33c, query_type=QT_ORDINARY) at item_func.cc:407
#16 0x081f0226 in Item_func_not::print (this=0x98e24d0, str=0xb6e5f33c, query_type=QT_ORDINARY) at item_cmpfunc.cc:304
#17 0x081fb70e in Item_cond::print (this=0x98e2550, str=0xb6e5f33c, query_type=QT_ORDINARY) at item_cmpfunc.cc:4447
#18 0x0832547c in st_select_lex::print (this=0x98e1168, thd=0x97841a0, str=0xb6e5f33c, query_type=QT_ORDINARY) at sql_select.cc:18816
#19 0x081a0df8 in st_select_lex_unit::print (this=0x98e1300, str=0xb6e5f33c, query_type=QT_ORDINARY) at sql_lex.cc:2036
#20 0x08324e55 in TABLE_LIST::print (this=0x99919d8, thd=0x97841a0, eliminated_tables=0, str=0xb6e5f33c, query_type=QT_ORDINARY) at sql_select.cc:18678
#21 0x08324770 in print_table_array (thd=0x97841a0, eliminated_tables=0, str=0xb6e5f33c, table=0x99e70f8, end=0x99e70fc, query_type=QT_ORDINARY)
at sql_select.cc:18509
#22 0x08324b78 in print_join (thd=0x97841a0, eliminated_tables=0, str=0xb6e5f33c, tables=0x9785b5c, query_type=QT_ORDINARY) at sql_select.cc:18603
#23 0x083253da in st_select_lex::print (this=0x9785a98, thd=0x97841a0, str=0xb6e5f33c, query_type=QT_ORDINARY) at sql_select.cc:18797
#24 0x081a0df8 in st_select_lex_unit::print (this=0x9785810, str=0xb6e5f33c, query_type=QT_ORDINARY) at sql_lex.cc:2036
#25 0x08294550 in execute_sqlcom_select (thd=0x97841a0, all_tables=0x99919d8) at sql_parse.cc:5117
#26 0x0828b069 in mysql_execute_command (thd=0x97841a0) at sql_parse.cc:2318
#27 0x08296857 in mysql_parse (thd=0x97841a0,
inBuf=0x98e0c18 "EXPLAIN EXTENDED\nSELECT `col_int_key`\nFROM (\nSELECT SUBQUERY1_t1 .*\nFROM CC SUBQUERY1_t1 STRAIGHT_JOIN C SUBQUERY1_t2 ON SUBQUERY1_t2 .`col_varchar_key` AND SUBQUERY1_t1 .`col_int_nokey` NOT IN "..., length=242, found_semicolon=0xb6e60228) at sql_parse.cc:6079
#28 0x08288b11 in dispatch_command (command=COM_QUERY, thd=0x97841a0, packet=0x988f571 "", packet_length=245) at sql_parse.cc:1253
#29 0x08287d4f in do_command (thd=0x97841a0) at sql_parse.cc:891
#30 0x08284e96 in handle_one_connection (arg=0x97841a0) at sql_connect.cc:1599
#31 0x00a08919 in start_thread () from /lib/libpthread.so.0
#32 0x00951e5e in clone () from /lib/libc.so.6