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

[Eli Zaretskii]

> Date: Thu, 11 Mar 2021 13:27:52 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: Andrea Corallo <akrl@sdf.org>
> 
> P.P.S. I tried to start another instance of Emacs from the branch, and
> it immediately displayed this:
> 
>   Re-entering top level after C stack overflow
> 
> Which probably means something unhealthy happens when you start Emacs
> while another instance is under a debugger with the same *.eln files
> loaded.

This part with stack overflow is not reproducible, unfortunately:
subsequent attempts to do the same start Emacs normally.  Too bad.