Re: master 8c81818673a 6/7: Tune volatile in read_char

[Eli Zaretskii]

> Date: Mon, 19 Aug 2024 19:05:12 +0000
> From: Pip Cet <pipcet@protonmail.com>
> Cc: acorallo@gnu.org, eggert@cs.ucla.edu, emacs-devel@gnu.org, 
> stefankangas@gmail.com
> 
> "Eli Zaretskii" <eliz@gnu.org> writes:
> 
> >> either duplicating them into a 'c_volatile'
> >> / 'c' pair, as Paul's patch did, or keeping a single volatile
> >> variable. I think "let's make all of them volatile" is an obvious
> >> simplification of that idea.
> >
> > Why not simply undo that single patch, and be done?
> 
> Because we will run into further setjmp()-related bugs.

What bugs? that change is described as a minor optimization, so no
bugs should be caused by reverting it.