From: Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Stefan Kangas <stefankangas@gmail.com>
Cc: 72255@debbugs.gnu.org
Subject: bug#72255: 30.0.60; Crash on macOS with malformed XPM image file
Date: Wed, 24 Jul 2024 11:41:13 +0800 [thread overview]
Message-ID: <871q3jxxra.fsf@yahoo.com> (raw)
In-Reply-To: <CADwFkm=b7w=P-1_mAdRrRa9DzOSTyCXYZ5muv66XwZhsv3LkYA@mail.gmail.com> (Stefan Kangas's message of "Tue, 23 Jul 2024 06:37:05 -0700")
Stefan Kangas <stefankangas@gmail.com> writes:
> Severity: normal
>
> Emacs crashes on macOS when opening a malformed XPM image file.
>
> I'm attaching an example image with the file extension ".xpm.txt" below;
> to reproduce, simply rename the file to ".xpm" and open it in Emacs.
> (This bad file is an edited version of back-arrow.xpm in emacs.git.)
>
> I've included an lldb backtrace below. Note that I reproduced this on
> master, but the code has not changed from emacs-30.
>
> The crash happens in nsterm.m:601:5, but I can't figure out why we're
> trying to access some other address than the pointer that was passed to
> that function. Maybe this is trivial to someone that knows Objective-C.
Please test the emacs-30 branch. It was a double free on NS affecting
not only XPM, but all image loading functions in varying measures.
next prev parent reply other threads:[~2024-07-24 3:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-23 13:37 bug#72255: 30.0.60; Crash on macOS with malformed XPM image file Stefan Kangas
2024-07-24 3:41 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2024-07-24 3:51 ` Stefan Kangas
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