bug#43943: >=27.1; segfault with package-list-packages and others

[Eli Zaretskii]

> From: "Dr. Arne Babenhauserheide" <arne_bab@web.de>
> Cc: 43943@debbugs.gnu.org
> Date: Mon, 12 Oct 2020 20:48:16 +0200
> 
> >> unicode symbols in my agenda, and two of the sybols are not actually
> >> supported in the font I currently use:
> >> #+SEQ_TODO: b / .?. X | : . . .
> >> #+SEQ_TODO: m | . L
> >
> > This failed in sending &
> 
> This failed again, since it did not preserve the encoding.
> 
> #+SEQ_TODO: ❢ ☯ ʘ‿ʘ X | ☺ ✔ ⌚ ✘
> #+SEQ_TODO: 🕭 | 𝄇 👌

I think Robert may be right, and this is bug#41627.  If you can
rebuild Emacs, then perhaps try the patch attached to this post:

  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=41627#29

and see if the problem goes away.