The following crash can be observed in the maria-5.3-mwl106 tree:

igor@sophia:~/maria/maria-5.3-mwl148-mwl106-bugs/mysql-test> ./mysql-test-run --ps-protocol func_str
Logging: ./mysql-test-run --ps-protocol func_str
vardir: /home/igor/maria/maria-5.3-mwl148-mwl106-bugs/mysql-test/var
Checking leftover processes...
Removing old var directory...
Creating var directory '/home/igor/maria/maria-5.3-mwl148-mwl106-bugs/mysql-test/var'...
Installing system database...
Checking supported features...
MariaDB Version 5.3.0

• skipping ndbcluster
• SSL connections supported
• binaries are debug compiled
  Collecting tests...
  Using server port 51607

==============================================================================

TEST RESULT TIME (ms)
------------------------------------------------------------

worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019
main.func_str [ fail ]
Test ended at 2011-05-18 13:35:55

CURRENT_TEST: main.func_str
mysqltest: At line 1203: query 'SELECT * FROM (SELECT * FROM v1) x' failed: 2013: Lost connection to MySQL server during query

The result from queries just before the failure was:
< snip >
1790921346
4194326291
2366072709
2707236321
CREATE TABLE t2 SELECT CRC32(a) FROM t1;
desc t2;
Field Type Null Key Default Extra
CRC32(a) int(10) unsigned YES NULL
SELECT * FROM v1;
C
2212294583
450215437
1842515611
4088798008
2226203566
498629140
1790921346
4194326291
2366072709
2707236321

More results from queries before failure can be found in /home/igor/maria/maria-5.3-mwl148-mwl106-bugs/mysql-test/var/log/func_str.log

Server [mysqld.1 - pid: 29468, winpid: 29468, exit: 256] failed during test run
Server log from this test:
---------SERVER LOG START----------
110518 13:35:53 [Note] Plugin 'PBXT' is disabled.
110518 13:35:53 [Note] Plugin 'InnoDB' is disabled.
110518 13:35:53 [Note] Event Scheduler: Loaded 0 events
110518 13:35:53 [Note] /home/igor/maria/maria-5.3-mwl148-mwl106-bugs/sql/mysqld: ready for connections.
Version: '5.3.0-MariaDB-alpha-debug-log' socket: '/home/igor/maria/maria-5.3-mwl148-mwl106-bugs/mysql-test/var/tmp/mysqld.1.sock' port: 16000 Source distribution
110518 13:35:55 [ERROR] mysqld got signal 11 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help diagnose
the problem, but since we have already crashed, something is definitely wrong
and this may fail.

key_buffer_size=0
read_buffer_size=131072
max_used_connections=1
max_threads=153
threads_connected=1
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 60768 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.