bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs

[Eli Zaretskii]

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: Michael Welsh Duggan <mwd@cert.org>,  mwd@md5i.com,  47244@debbugs.gnu.org
> Date: Thu, 18 Mar 2021 21:13:40 +0100
> 
> > So the selected window's buffer was killed.  How is that possible?
> 
> Perhaps during run_window_change_functions.

Something like that, yes.  But I don't understand how that can happen
technically: kill-buffer selects another buffer when killing the
current one.  So how was that buffer killed, and yet stayed current?