bug#15794: Core dump after SIGTERM during GC marking

[Eli Zaretskii]

> Date: Sun, 3 Nov 2013 15:29:55 -0500
> From: Barry OReilly <gundaetiapo@gmail.com>
> Cc: Andreas Schwab <schwab@linux-m68k.org>, 15794@debbugs.gnu.org
> 
> (gdb) xbacktrace
> You can't do that without a process to debug.

Sorry, I failed to mention that xbacktrace won't work on a core dump.

But you should be able to display the value of kill-emacs-hook, by
walking its car and cdr links.