Re: Building the igc branch on MS-Windows

[Eli Zaretskii <eliz@gnu.org>]

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: eller.helmut@gmail.com,  emacs-devel@gnu.org
> Date: Sat, 27 Apr 2024 09:23:17 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > So this is progress, but now the font structure of a face is invalid,
> > so some other protection is missing somewhere.  Any ideas?
> 
> Maybe it's the ascii_font that I found in the other mail? If you give me
> an hour I can look into this. Or you could check if fix_face does all it
> needs to trace... And maybe fix_font.

There's no fix_font, AFAICT.

In fix_face, I think these should be added to scan:

    struct font *font;
    struct face *next, *prev;
    struct face *ascii_face;
    void *extra;

If some of those are not needed to be scanned, then maybe I don't
understand the criteria for scan-ability?  Would you please explain
the basics here, like MPS 101 thing?