bug#24640: Crashes in 25.1

[Eli Zaretskii]

> From: Reuben Thomas <rrt@sc3d.org>
> Date: Wed, 12 Oct 2016 11:57:26 +0100
> Cc: Phillip Lord <phillip.lord@russet.org.uk>, "Toby S. Cubitt" 
> <tsc25@cantab.net>, 24640@debbugs.gnu.org
> 
> ​And regardless of that, should it in principle be possible to crash Emacs 
> (other than by exhausting memory or
> CPU) from Lisp, except by calling external code improperly?​

No.  Otherwise I wouldn't be spending so much time on this ;-)