bug#26932: 25.1; Crash triggered a few times a day with network process

[Eli Zaretskii]

> Date: Tue, 13 Jun 2017 18:04:43 +0100 (BST)
> From: Vivek Dasmohapatra <vivek@etla.org>
> cc: 26932@debbugs.gnu.org
> 
> > What kind of :eval form(s) do you have in your mode-line-format
> > definitions?
> 
> At the top level of m-l-f

Thanks, that seems okay.

Hmm... all those "optimized out" variables really make it hard
figuring out which Lisp data structure causes the trouble.  Do you
know how to examine marked objects stored in the last_marked[] array?
There are some instructions about that in etc/DEBUG.