bug#47067: 28.0.50; [feature/native-comp] Crash while scrolling through dispnew.c

[Eli Zaretskii]

> Date: Mon, 05 Apr 2021 18:06:03 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 47067@debbugs.gnu.org
> 
> And here is the possible link between these two issues: if I start
> Emacs after compiling preloaded files manually as above, then Emacs
> seems to load the *.eln files from native-lisp/28.0.50-NNNNNN/, not
> from native-lisp/28.0.50-NNNNNN/preloaded, and the problems with the
> backtraces miraculously disappear!

Scratch that: the problems with backtraces don't disappear, they still
appear from time to time.

I'm now starting to think that setting comp-debug to 1 didn't really
fix the issue with backtraces, just made it less frequent.

Don't know what to do with this.  Very disappointing.  It means that
for me it will be much harder to debug the natively-compiled Emacs.