bug#50252: 28.0.50; Emacs crashed when daemon could not access it

[Eli Zaretskii]

> Date: Mon, 27 Sep 2021 17:15:52 +0300
> From: Jean Louis <bugs@gnu.support>
> Cc: 50252@debbugs.gnu.org
> 
> > How many Emacs instances were involved: one or two?  You are talking
> > about "emacsdaemon" on the one hand, and "the main Emacs instance"
> > OTOH: are those two different and separate Emacs sessions running at
> > the same time on the same system?
> 
> One instance, and emacsclient.
> 
> > And what do you mean when you say in the Subject "Emacs crashed when
> > daemon could not access it" -- what is "it" here?  If "it" is Emacs,
> > then what do you mean by "daemon accesses it"? how can a daemon access
> > Emacs?
> 
> Sorry to be late.
> 
> Emacs was running as daemon and I had to edit new file with
> emacsclient. However, Emacs was busy doing something else in this case
> video playing by using `!' so the instance was blocked. Then when
> video was interrupted, Emacs crushed completely in the memory.

OK, thanks for clarifying.  The situation is now quite clear, I think,
but to make any progress with this bug, we'd need either some kind of
backtrace from the crash, or a reproducible recipe.  And I understand
neither is available?