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Re: Building the igc branch on MS-Windows
From: |
Gerd Möllmann |
Subject: |
Re: Building the igc branch on MS-Windows |
Date: |
Sat, 27 Apr 2024 15:26:35 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Gerd Möllmann <gerd.moellmann@gmail.com>
>> Cc: eller.helmut@gmail.com, emacs-devel@gnu.org
>> Date: Sat, 27 Apr 2024 14:09:26 +0200
>>
>> Inaccessible memory in my experience so far means that the corresponding
>> object has either been moved by MPS, or it has been "freed", by not
>> copying it.
>>
>> So, as an ansatz, let's assume the font in question has been moved. It
>> would follow, I think, that it is not a face->font right? Because
>> otherwise the reference to the the font would have been traced. The
>> question would be where the reference to the font comes from?
>
> It _is_ face->font. We get to it like this:
>
> void
> gui_produce_glyphs (struct it *it)
> {
> int extra_line_spacing = it->extra_line_spacing;
>
> it->glyph_not_available_p = false;
>
> if (it->what == IT_CHARACTER)
> {
> unsigned char2b;
> struct face *face = FACE_FROM_ID (it->f, it->face_id);
> struct font *font = face->font; <<<<<<<<<<<<<<<<<<<<<<<<<<<<
>
> IOW, the display iterator references a face by its ID, and we access
> that face via the frame's face cache. As I wrote in a previous
> message, all the faces in the cache after index 21 are clobbered,
> although the cache's 'used' count is 57, and the index of the
> problematic face is 22.
Good!
Can you something wrong ub fix_face_cache (please see the other mail I
sent)?
And then, do we have other references to face_cache than from the frame?
Maybe I've missed one?
- Re: Building the igc branch on MS-Windows, (continued)
- Re: Building the igc branch on MS-Windows, Ihor Radchenko, 2024/04/27
- Re: Building the igc branch on MS-Windows, Gerd Möllmann, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Gerd Möllmann, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Gerd Möllmann, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows,
Gerd Möllmann <=
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Gerd Möllmann, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Helmut Eller, 2024/04/27
- Re: Building the igc branch on MS-Windows, Gerd Möllmann, 2024/04/27
- Re: Building the igc branch on MS-Windows, Gerd Möllmann, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Gerd Möllmann, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27
- Re: Building the igc branch on MS-Windows, Eli Zaretskii, 2024/04/27