Hi Gergely !

 Thank you for your time and the patch, but it's still happening...


# gdb ./syslog-ng/.libs/syslog-ng
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "amd64-marcel-freebsd"...
(gdb) run -d -f /usr/local/etc/syslog-ng.conf
Starting program: /usr/ports/sysutils/syslog-ng/work/syslog-ng-3.4.3/syslog-ng/.libs/syslog-ng -d -f /usr/local/etc/syslog-ng.conf
[New LWP 100524]
[New Thread 802407400 (LWP 100524/syslog-ng)]
nanosleep() is not accurate enough to introduce minor stalls on the reader side, multi-threaded performance may be affected;
Reading path for candidate modules; path='/usr/local/lib/syslog-ng'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='afamqp.so', module='afamqp'
Registering candidate plugin; module='afamqp', context='destination', name='amqp', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='affile.so', module='affile'
Registering candidate plugin; module='affile', context='source', name='file', preference='0'
Registering candidate plugin; module='affile', context='source', name='pipe', preference='0'
Registering candidate plugin; module='affile', context='destination', name='file', preference='0'
Registering candidate plugin; module='affile', context='destination', name='pipe', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='afmongodb.so', module='afmongodb'
Registering candidate plugin; module='afmongodb', context='destination', name='mongodb', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='afprog.so', module='afprog'
Registering candidate plugin; module='afprog', context='source', name='program', preference='0'
Registering candidate plugin; module='afprog', context='destination', name='program', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='afsocket-notls.so', module='afsocket-notls'
Registering candidate plugin; module='afsocket-notls', context='source', name='unix-stream', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='unix-stream', preference='0'
Registering candidate plugin; module='afsocket-notls', context='source', name='unix-dgram', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='unix-dgram', preference='0'
Registering candidate plugin; module='afsocket-notls', context='source', name='tcp', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='tcp', preference='0'
Registering candidate plugin; module='afsocket-notls', context='source', name='tcp6', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='tcp6', preference='0'
Registering candidate plugin; module='afsocket-notls', context='source', name='udp', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='udp', preference='0'
Registering candidate plugin; module='afsocket-notls', context='source', name='udp6', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='udp6', preference='0'
Registering candidate plugin; module='afsocket-notls', context='source', name='syslog', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='syslog', preference='0'
Registering candidate plugin; module='afsocket-notls', context='source', name='network', preference='0'
Registering candidate plugin; module='afsocket-notls', context='destination', name='network', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='afsocket-tls.so', module='afsocket-tls'
Registering candidate plugin; module='afsocket-tls', context='source', name='unix-stream', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='unix-stream', preference='100'
Registering candidate plugin; module='afsocket-tls', context='source', name='unix-dgram', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='unix-dgram', preference='100'
Registering candidate plugin; module='afsocket-tls', context='source', name='tcp', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='tcp', preference='100'
Registering candidate plugin; module='afsocket-tls', context='source', name='tcp6', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='tcp6', preference='100'
Registering candidate plugin; module='afsocket-tls', context='source', name='udp', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='udp', preference='100'
Registering candidate plugin; module='afsocket-tls', context='source', name='udp6', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='udp6', preference='100'
Registering candidate plugin; module='afsocket-tls', context='source', name='syslog', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='syslog', preference='100'
Registering candidate plugin; module='afsocket-tls', context='source', name='network', preference='100'
Registering candidate plugin; module='afsocket-tls', context='destination', name='network', preference='100'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='afsocket.so', module='afsocket'
Registering candidate plugin; module='afsocket', context='source', name='unix-stream', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='unix-stream', preference='100'
Registering candidate plugin; module='afsocket', context='source', name='unix-dgram', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='unix-dgram', preference='100'
Registering candidate plugin; module='afsocket', context='source', name='tcp', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='tcp', preference='100'
Registering candidate plugin; module='afsocket', context='source', name='tcp6', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='tcp6', preference='100'
Registering candidate plugin; module='afsocket', context='source', name='udp', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='udp', preference='100'
Registering candidate plugin; module='afsocket', context='source', name='udp6', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='udp6', preference='100'
Registering candidate plugin; module='afsocket', context='source', name='syslog', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='syslog', preference='100'
Registering candidate plugin; module='afsocket', context='source', name='network', preference='100'
Registering candidate plugin; module='afsocket', context='destination', name='network', preference='100'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='afuser.so', module='afuser'
Registering candidate plugin; module='afuser', context='destination', name='usertty', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='basicfuncs.so', module='basicfuncs'
Registering candidate plugin; module='basicfuncs', context='template-func', name='grep', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='if', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='echo', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='length', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='substr', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='strip', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='sanitize', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='+', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='-', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='*', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='/', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='%', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='ipv4-to-int', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='indent-multi-line', preference='0'
Registering candidate plugin; module='basicfuncs', context='template-func', name='context-length', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='confgen.so', module='confgen'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='cryptofuncs.so', module='cryptofuncs'
Registering candidate plugin; module='cryptofuncs', context='template-func', name='uuid', preference='0'
Registering candidate plugin; module='cryptofuncs', context='template-func', name='hash', preference='0'
Registering candidate plugin; module='cryptofuncs', context='template-func', name='sha1', preference='0'
Registering candidate plugin; module='cryptofuncs', context='template-func', name='sha256', preference='0'
Registering candidate plugin; module='cryptofuncs', context='template-func', name='sha512', preference='0'
Registering candidate plugin; module='cryptofuncs', context='template-func', name='md4', preference='0'
Registering candidate plugin; module='cryptofuncs', context='template-func', name='md5', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='csvparser.so', module='csvparser'
Registering candidate plugin; module='csvparser', context='parser', name='csv-parser', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='dbparser.so', module='dbparser'
Registering candidate plugin; module='dbparser', context='parser', name='db-parser', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='syslog-ng-crypto.so', module='syslog-ng-crypto'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='syslogformat.so', module='syslogformat'
Registering candidate plugin; module='syslogformat', context='format', name='syslog', preference='0'
Registering candidate plugin; module='syslogformat', context='parser', name='syslog-parser', preference='0'
Reading shared object for a candidate module; path='/usr/local/lib/syslog-ng', fname='system-source.so', module='system-source'
Compiling #unnamed sequence [log] at [/usr/local/etc/syslog-ng.conf:3]
  Compiling src_local reference [source] at [/usr/local/etc/syslog-ng.conf:3]
    Compiling src_local sequence [source] at [/usr/local/etc/syslog-ng.conf:8]
      Compiling #unnamed junction [log] at [/usr/local/etc/syslog-ng.conf:8]
        Compiling #unnamed single [log] at [/usr/local/etc/syslog-ng.conf:8]
        Compiling #unnamed single [log] at [/usr/local/etc/syslog-ng.conf:9]
        Compiling #unnamed single [log] at [/usr/local/etc/syslog-ng.conf:1]
        Compiling #unnamed single [log] at [/usr/local/etc/syslog-ng.conf:1]
  Compiling d_amqp reference [destination] at [/usr/local/etc/syslog-ng.conf:3]
    Compiling d_amqp sequence [destination] at [/usr/local/etc/syslog-ng.conf:1]
      Compiling #unnamed junction [log] at [/usr/local/etc/syslog-ng.conf:1]
        Compiling #unnamed single [log] at [/usr/local/etc/syslog-ng.conf:1]
[New Thread 802409000 (LWP 109094/syslog-ng)]
Running application hooks; hook='1'
Running application hooks; hook='3'
syslog-ng starting up; version='3.4.3'
Incoming log entry; line='<6>pid 85554 (syslog-ng), uid 0: exited on signal 6 (core dumped)'
Worker thread started; driver='d_amqp#0'
Connecting to AMQP succeeded; driver='d_amqp#0'
**
ERROR:logmsg.c:1303:log_msg_unref: assertion failed: (LOGMSG_REFCACHE_VALUE_TO_REF(old_value) >= 1)

Program received signal SIGABRT, Aborted.
[Switching to Thread 802409000 (LWP 109094/syslog-ng)]
0x0000000801f9938c in thr_kill () from /lib/libc.so.7
(gdb) bt
#0  0x0000000801f9938c in thr_kill () from /lib/libc.so.7
#1  0x000000080203b99b in abort () from /lib/libc.so.7
#2  0x00000008011223f4 in g_assertion_message () from /usr/local/lib/libglib-2.0.so.0
#3  0x00000008011229c2 in g_assertion_message_expr () from /usr/local/lib/libglib-2.0.so.0
#4  0x000000080084cc87 in log_msg_unref (self=Variable "self" is not available.
) at logmsg.c:1303
#5  0x000000080368736d in afamqp_worker_thread (arg=Variable "arg" is not available.
) at afamqp.c:479
#6  0x000000080085b6de in worker_thread_func (st=0x8024259a0) at misc.c:580
#7  0x0000000801124a65 in g_thread_proxy () from /usr/local/lib/libglib-2.0.so.0
#8  0x0000000801d220a4 in pthread_getprio () from /lib/libthr.so.3
#9  0x0000000000000000 in ?? ()
Error accessing memory address 0x7fffffbfe000: Bad address.
(gdb)