Core image showing no prints

Hi All,
I am facing a very peculiar problem with my applciation.
The problem is that one of my process is making core very rarely.But when
I am going to debug it,it is not showing any prints.
The Make file is :

g++ -g $(commonobjfiles) -o ipcl $(INCLUDES) -z muldefs -lpthread -lsocket -lnsl -Wno-deprecated -ldl -L../../../L
IB -lvng_db_api -lAlarmManagerClient -L $(ORACLE_HOME)/lib32 -lclntsh -D_REENTRANT -DNO_IAM

I am debugging it as :gdb <binary name> core_file

I am using: Sun9 and teh application is threaded.
"Debug prints:
bash-2.05$ gdb ipcl core_ipcl
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "sparc-sun-solaris2.9"...

Core was generated by `./ipcl'.
Program terminated with signal 11, Segmentation fault.
0x00000000 in ?? ()
(gdb) bt
#0 0x00000000 in ?? ()
(gdb)

Plz comment on it.

Regards,
Suraj