bug#47774: 28.0.50; crash when using minibuffer

[Eli Zaretskii]

> From: Vincenzo Pupillo <v.pupillo@gmail.com>
> Date: Wed, 14 Apr 2021 12:12:47 +0200
> 
> The crash occur when switching from one buffer to others using
> counsel-switch-buffer (via minibuffer). I'm wasn't doing anything special, in 
> *scratch* buffer
> I was trying to figure out how to properly use fontset functions.

Please show a recipe to reproduce this, preferably starting from
"emacs -Q".  And if by "crash" you mean Emacs dumps core, please run
it under GDB and show a C-level backtrace from the crash.

Thanks.