bug#21666: 25.0.50; Random segfaults

[Eli Zaretskii]

> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 21666@debbugs.gnu.org
> 
> > Lisp Backtrace:
> > "car" (0xffff47f0)
> > "numberp" (0xffff4938)
> > "cond" (0xffff4a78)
> 
> This says that 'numberp' calls 'car', which is false, according to my
> reading of the code.

Or maybe I'm reading this incorrectly.

In any case:

> #0  CAR (c=4210977137704721523) at lisp.h:1195

How can CAR segfault?

> What system-wide or Emacs-related changes, excluding "git pull" from
> the repository, did you make immediately before this started
> happening?  Any system upgrades, new installations, anything else?

This question still stands.