where "config_name" is name of config you have in /etc/spectrum (You can also specify full path to config instead of its name).

You will see something like this:

	GNU gdb (GDB) 7.0-ubuntu

	Copyright (C) 2009 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".

	For bug reporting instructions, please see:

	<http://www.gnu.org/software/gdb/bugs/>...

	Reading symbols from /home/hanzz/code/test/transport/spectrum...done.

	(gdb)

Now you have to start Spectrum with following GDB command:

	run

Since now Spectrum is running and you have to reproduce the crash or just wait for crash. Then get a backtrace with this GDB command:

	bt full