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Date: Sat, 23 May 2026 15:07:53 +1000
To: cygwin AT cygwin DOT com
Subject: file-5.46 segfault on Cygwin (only)
Message-ID: <ahE2Kc0MK1cnS-HK@raf.org>
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From: raf via Cygwin <cygwin AT cygwin DOT com>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

Hi,

The current version of file/libmagic on Cygwin is 5.46.

It crashes when trying to analyse the zipfile
CookieAutoDelete AT kennydo DOT com DOT xpi (a Firefox addon).
This is without decompressing the zipfile to allow
further analsis.

It's here for reference (raf.org/tmp/CookieAutoDelete AT kennydo DOT com DOT xpi).

Strangely, 5.46 on macOS and Debian don't crash with this file.
It's just the 5.46 on Cygwin.

I compiled 5.46 on Cygwin myself to see if it's something
wrong just with the Cygwin package of file-devel but that
crashed too.

5.47 on all three systems doesn't crash, so that's good.

So, if anyone here has anything to do with packaging file-devel
for Cygwin, please update the package to 5.47. Thanks.

cheers,
raf


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