How can do a debbug core?

[djrapa]

how can do a debug for segmented core?
Like this with symbols and functions? to see the error.

Core was generated by `game'.
Program terminated with signal 6, Aborted.
Reading symbols from /usr/lib32/libmd.so.4...done.
Loaded symbols for /usr/lib32/libmd.so.4
Reading symbols from /usr/lib32/libz.so.4...done.
Loaded symbols for /usr/lib32/libz.so.4
Reading symbols from /usr/lib32/libstdc++.so.6...done.
Loaded symbols for /usr/lib32/libstdc++.so.6
Reading symbols from /usr/lib32/libm.so.5...done.
Loaded symbols for /usr/lib32/libm.so.5
Reading symbols from /usr/lib32/libgcc_s.so.1...done.
Loaded symbols for /usr/lib32/libgcc_s.so.1
Reading symbols from /usr/lib32/libthr.so.3...done.
Loaded symbols for /usr/lib32/libthr.so.3
Reading symbols from /usr/lib32/libc.so.7...done.
Loaded symbols for /usr/lib32/libc.so.7
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x2864d34b in thr_kill () from /usr/lib32/libc.so.7
[New Thread 28802174288b6d80 (LWP 100335)]
[New Thread 28602a00288b6ec0 (LWP 100297)]
[New Thread 288b6db4288b7140 (LWP 100295)]
[New Thread 288b6ef428802140 (LWP 100352)]
Cannot find new threads: generic error
(gdb) where
#0  0x2864d34b in thr_kill () from /usr/lib32/libc.so.7
#1  0x285fc946 in pthread_kill () from /usr/lib32/libthr.so.3
#2  0x285fa3b3 in raise () from /usr/lib32/libthr.so.3
#3  0x286f006a in abort () from /usr/lib32/libc.so.7
#4  0x286d8526 in __assert () from /usr/lib32/libc.so.7
#5  0x081dc697 in __tcf_0 () at pool.h:41
#6  0x286d0ed7 in __cxa_finalize () from /usr/lib32/libc.so.7
#7  0x28676fda in exit () from /usr/lib32/libc.so.7
#8  0x080eddef in ping_event (event=Variable "event" is not available.
) at desc.cpp:185
#9  0x080fc2d4 in event_process (pulse=403099) at event.cpp:175
#10 0x081f273f in heartbeat (ht=0x288f7970, pulse=403099) at main.cpp:171
#11 0x081f336d in idle () at main.cpp:679
#12 0x081f4e46 in main (argc=1, argv=0xffffdca0) at main.cpp:405

i Only see this

(gdb) Core was generated by `game'.
(gdb) Program terminated with signal 11, Segmentation fault.
(gdb) #0 0x28638530 in ?? ()
(gdb)

with symbols is

Core was generated by `game'.
Program terminated with signal 11, Segmentation fault.
#0 0x28638530 in ?? ()
(gdb) add-symbol-file second99
add symbol table from file "second99" at
(y or n) yes
Reading symbols from second99...done.
(gdb) bt
#0 0x28638530 in ?? ()
#1 0x086662e8 in ?? ()
#2 0x00003690 in ?? ()
#3 0xc53d1de2 in ?? ()
#4 0x00000001 in ?? ()
#5 0x086662e8 in ?? ()
#6 0xbf7fbbe8 in ?? ()
#7 0x080f9382 in ~CEntity (this=0x286c07f8) at stl_tree.h:592
Previous frame inner to this frame (corrupt stack?)

[djrapa]

anyone?