router does memory fault (.50s4)

["Oleg Yu. Polyanski" <luke@jet.msk.su>]

Hello.

	i have compiled zmailer .50s4 under AIX 4.1.4.0. when i tried
to start it i got memory fault during router startup. i have recompiled
router and lib with debug info and examined real crash point, below is
gdb backtrace:

Starting program: /home/luke/src/zmailer/router/router 

Program received signal SIGSEGV, Segmentation fault.
0x10006f0c in sp_lookup (key=537002664, q=0x1) at splay.c:66
66              c = ++(q->lkpcmps);
(gdb) bt
#0  0x10006f0c in sp_lookup (key=537002664, q=0x1) at splay.c:66
#1  0x10007014 in sp_install (key=537002664, data=0x20000464, mark=0, q=0x1) 
at splay.c:98
#2  0x10000fd4 in initialize (configfile=0x2000c1d4 
"/usr/local/zmailer/router.cf", argc=-1,
    argv=0x2ff22ae4) at router.c:363
#3  0x100009dc in main (argc=1, argv=0x2ff22ae0) at router.c:233
#4  0x100001f4 in __start ()

	tried to go through the sources with gdb but data structures are
too complex to solve problem in 30 minutes, may be someone (who knows 
router internals well) has any ideas? any help would be greatly appreciated.
	it really frustrates because one hour ago i have installed .50s4 
on the openbsd and it works out of the box.

/Oleg