From: Lars Ingebrigtsen <larsi@gnus.org>
To: emacs-devel@gnu.org
Subject: Re: "corrupted size vs. prev_size"
Date: Tue, 12 Apr 2022 14:54:25 +0200 [thread overview]
Message-ID: <871qy2wjge.fsf@gnus.org> (raw)
In-Reply-To: <875ynewkqx.fsf@gnus.org> (Lars Ingebrigtsen's message of "Tue, 12 Apr 2022 14:26:30 +0200")
Found it!
It's this bit:
for (y = 0; y < subimg_height; ++y)
for (x = 0; x < subimg_width; ++x)
{
int c = raster[y * subimg_width + x];
if (transparency_color_index != c || disposal != DISPOSE_DO_NOT)
{
*(pixmap + x + subimg_left + (y + subimg_top) * width) =
pixel_colors[c];
}
}
On some images, this calculation writes outside the pixmap area.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2022-04-12 12:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-12 10:59 "corrupted size vs. prev_size" Lars Ingebrigtsen
2022-04-12 11:14 ` Andreas Schwab
2022-04-12 11:23 ` Lars Ingebrigtsen
2022-04-12 11:26 ` Po Lu
2022-04-12 11:41 ` Lars Ingebrigtsen
2022-04-12 11:45 ` Lars Ingebrigtsen
2022-04-12 12:26 ` Lars Ingebrigtsen
2022-04-12 12:54 ` Lars Ingebrigtsen [this message]
2022-04-12 13:13 ` Lars Ingebrigtsen
2022-04-12 14:09 ` Lars Ingebrigtsen
2022-04-12 11:44 ` Eli Zaretskii
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=871qy2wjge.fsf@gnus.org \
--to=larsi@gnus.org \
--cc=emacs-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).