Version: '5.3.4-MariaDB-rc-debug-log'
mysqld: sql_class.cc:3443: void THD::restore_backup_open_tables_state(Open_tables_state*): Assertion `open_tables == 0 && temporary_tables == 0 && handler_tables == 0 && derived_tables == 0 && lock == 0 && locked_tables == 0 && prelocked_mode == NON_PRELOCKED && m_reprepare_observer == __null' failed.
[ERROR] mysqld got signal 6 ;

#6 0x00007ff27d674235 in __assert_fail () from /lib64/libc.so.6
#7 0x00000000006ccdeb in THD::restore_backup_open_tables_state (this=0x7ff26107daa8, backup=0x7ff25209f360)
at sql_class.cc:3439
#8 0x000000000075da9d in open_performance_schema_table (thd=0x7ff26107daa8, one_table=0x7ff25209ed70,
backup=0x7ff25209f360) at sql_base.cc:9616
#9 0x00000000007e09e8 in Log_to_csv_event_handler::log_general (this=0x7ff260fe3680, thd=0x7ff26107daa8,
event_time=..., user_host=0x7ff25209f490 "root[root] @ [127.0.0.1]", user_host_len=25, thread_id=12,
command_type=0xd992bd "Query", command_type_len=5, sql_text=0x2886d40 "SELECT DATABASE()",
sql_text_len=17, client_cs=0x1311260) at log.cc:450
#10 0x00000000007e27f3 in LOGGER::general_log_write (this=0x131e980, thd=0x7ff26107daa8, command=COM_QUERY,
query=0x2886d40 "SELECT DATABASE()", query_length=17) at log.cc:1109
#11 0x00000000007ec8ce in general_log_write (thd=0x7ff26107daa8, command=COM_QUERY,
query=0x2886d40 "SELECT DATABASE()", query_length=17) at log.cc:4815
#12 0x00000000006f373f in dispatch_command (command=COM_QUERY, thd=0x7ff26107daa8,
packet=0x7ff2610c8fa9 "SELECT DATABASE()", packet_length=17) at sql_parse.cc:1218
#13 0x00000000006f2b44 in do_command (thd=0x7ff26107daa8) at sql_parse.cc:923
#14 0x00000000006efa22 in handle_one_connection (arg=0x7ff26107daa8) at sql_connect.cc:1193
#15 0x00007ff27e32fa4f in start_thread () from /lib64/libpthread.so.0
#16 0x00007ff27d71982d in clone () from /lib64/libc.so.6

Query (0x2886d40): SELECT DATABASE()
Connection ID (thread ID): 12
Status: NOT_KILLED

bzr version-info
revision-id: <email address hidden>
date: 2012-02-16 20:15:57 +0400
build-date: 2012-02-16 21:51:16 +0200
revno: 3424

Could not reproduce on maria-5.5, mysql-5.1.60, mysql-5.5.20; however, the RQG test is not deterministic.
If you don't get the failure, try a few times, also changing the number of threads might help.

perl runall.pl \
--no-mask \
--threads=16 \
--duration=600 \
--queries=100M \
--grammar=./test.yy \
--views \
--engine=MyISAM \
-mysqld=-log-output=TABLE \
--vardir=<your vardir> \
--basedir=<debug basedir>

1. cat test.yy

query:
update | trigger ;
dml:
insert | update | delete ;
insert:
INSERT INTO view_table ( _field ) VALUES ( value ) ;
update:
UPDATE view SET _field = value where ;
delete:
DELETE FROM view_table where LIMIT 1 ;
trigger:
CREATE TRIGGER _letter AFTER UPDATE ON table FOR EACH ROW BEGIN dml ; dml ; dml ; END ;
where:
WHERE _field > value | WHERE _field < value ;
value:
_digit ;
view_table:
view | table ;
table:
A | AA | B | BB | C | CC ;
view:
view_A | view_AA | view_B | view_BB | view_C | view_CC ;

1. EOF