$ less vlctrace.log
Starting program: /usr/bin/vlc
warning: Could not load shared library symbols for linux-gate.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0xb76efb40 (LWP 13305)]
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib/libgobject-2.0.so.0.3400.3-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
[New Thread 0xb6c8cb40 (LWP 13306)]
[New Thread 0xb2f68b40 (LWP 13307)]
[Thread 0xb2f68b40 (LWP 13307) exited]
[New Thread 0xb2ee7b40 (LWP 13308)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb2ee7b40 (LWP 13308)]
0xb771f734 in dvdnav_describe_title_chapters () from /usr/lib/libdvdnav.so.4
#0  0xb771f734 in dvdnav_describe_title_chapters () from /usr/lib/libdvdnav.so.4
#1  0xb7fc1856 in ?? () from /usr/lib/vlc/plugins/access/libdvdnav_plugin.so
#2  0xb7f2d580 in ?? () from /usr/lib/libvlccore.so.5
#3  0xb7f2dcc3 in vlc_module_load () from /usr/lib/libvlccore.so.5
#4  0xb7f2e1e2 in module_need () from /usr/lib/libvlccore.so.5
#5  0xb7edb17a in ?? () from /usr/lib/libvlccore.so.5
#6  0xb7ee979d in ?? () from /usr/lib/libvlccore.so.5
#7  0xb7eea960 in ?? () from /usr/lib/libvlccore.so.5
#8  0xb7eeebdc in ?? () from /usr/lib/libvlccore.so.5
#9  0xb7e84d08 in start_thread () from /usr/lib/libpthread.so.0
#10 0xb7db8cce in clone () from /usr/lib/libc.so.6