dtown:~/tmp/build/linux2/bin$ gdb ./blender
GNU gdb 6.7.1-debian
Copyright (C) 2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
run
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run
Starting program: /home/dhill/tmp/build/linux2/bin/blender
[Thread debugging using libthread_db enabled]
Compiled with Python version 2.5.1.
Checking for installed Python... got it!
[New Thread 0xb6b9c6e0 (LWP 24452)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb6b9c6e0 (LWP 24452)]
0x08614984 in _vert_addEdge (v=0x0, e=0x920db98, ss=0x90fdf30)
    at source/blender/blenkernel/intern/CCGSubSurf.c:366
366             v->edges = CCGSUBSURF_realloc(ss, v->edges, (v->numEdges+1)*sizeof(*v->edges), v->numEdges*sizeof(*v->edges));
(gdb) c
Continuing.

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb)