On Tue, Nov 14, 2023 at 2:13 PM Eli Zaretskii <eliz@gnu.org> wrote:

> > Date: Mon, 13 Nov 2023 22:40:36 +0000
> > TLS-Required: No
> > From: jm--- via "Bug reports for GNU Emacs,
> >  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>
> João, is this OK?
>

Oooof hard to say.  But no I don't think so.  You see the type
of the object changing in the call to flymake-make-diagnostic?
That could be seriously problematic for non-buffer-local diagnostics of
some  backends.

And another call to flymake-diag-region?

Can you point me to the first message in this thread via a debbugs
URL, or to one where a clear Emacs -Q recipe is given?

Thanks,
João