Subject: bug#40317: 27.0.90; Reverting a buffer that visits C file signals an error

From: Eli Zaretskii <[email-masked]>
Date: Wed, 16 Sep 2020 17:26:39 +0300

> From: Damien Cassou <[email-masked]>
> Date: Wed, 16 Sep 2020 14:24:55 +0200
> 
> 
> I face the same problem while editing C# files in GNU Emacs 27.1.

Does that happen with _any_ C# file?  If not, can you post an example
of a file where this happens, and a recipe to reproduce the problem?

Thanks.