bug#61847: debug-early-backtrace only works some of the time.

[Eli Zaretskii]

> Cc: 61847@debbugs.gnu.org
> Date: Tue, 28 Feb 2023 09:12:08 +0000
> From: Alan Mackenzie <acm@muc.de>
> 
> > How 'bout the patch below instead.
> > Maybe we should instead try and check whether we're after the bootstrap
> > (not sure what would be the corresponding test).
> 
> It might work.  It might work now, and fail in future releases of Emacs
> should the loading mechanism get changed.  The original code using prin1
> was rock solid, by design.

It isn't clear to me why you consider code that uses prin1 to be "rock
solid by design".  Please elaborate.