bug#56967: 29.0.50; Frequent crashes under Wayland

[Eli Zaretskii <eliz@gnu.org>]

> From: Po Lu <luangruo@yahoo.com>
> Cc: bjorn.bidar@thaodan.de,  56967@debbugs.gnu.org
> Date: Fri, 05 Aug 2022 14:53:19 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > How about asking the glibc developers to provide one, citing this very
> > use case as the real-life problem to solve?  Specifically, what I'd
> > like to do in that hook is to shut down Emacs in an orderly manner, so
> > that the user won't lose all his/her edits.
> 
> By running the code inside `shut_down_emacs'?

Yes.

> I will indeed ask for such a hook.

Thanks.

> > Amazing.  Where did those people learn to develop friendly, extensible
> > libraries? in what tyrannical culture?
> 
> I'd say their culture has changed in the past decade and is now pretty
> close to Apple's.  Unfortunately, Wayland is gaining popularity (as
> evidenced by the amount of our users who report related bugs), and GTK
> is the only toolkit that provides useful support for it.

Maybe we should keep complaining there until someone hears us.
Calling _exit after printing an error message is not a reasonable
thing to do in a general-purpose library.  Exiting is something an
application should do.