Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Message-ID:	<436B65CC.8010705@byu.net>
Date:	Fri, 04 Nov 2005 06:44:44 -0700
From:	Eric Blake <ebb9 AT byu DOT net>
User-Agent:	Mozilla Thunderbird 1.0.2 (Windows/20050317)
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: BUG: Binutils strip corrupts dll files when using cygwin 1.5.18 and latest snapshot (20051103)
References:	<F5D40D7C-1285-49BA-ADA0-4A93ABD63982 AT rehley DOT net> <20051104015144 DOT GI17650 AT trixie DOT casa DOT cgf DOT cx> <436B5771 DOT 1070202 AT byu DOT net> <20051104131115 DOT GA2858 AT calimero DOT vinschen DOT de>
In-Reply-To:	<20051104131115.GA2858@calimero.vinschen.de>
X-IsSubscribed:	yes

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

According to Corinna Vinschen on 11/4/2005 6:11 AM:
> 
> The problem is that there's one section in the file, .gnu_debuglink,
> which is defined as a debugging section.  strip's job is to remove all
> debug sections.  This is usually a simple job to do since the debug
> sections are typically at the end of the file anyway.  Not so the
> .gnu_debuglink section.  By stripping this out, strip generates an
> invalid PE/COFF file since it leaves an undefined memory hole in the
> address space of the file, which is a no-no with the somewhat overly
> simple Windows runtime loader.

Wow.  Learn something every day.  No wonder ELF is so much more popular in
the open source community.

> 
> It's an unlucky case.  You could argue that strip should know better
> than to remove debug sections from the middle of a PE/COFF file but
> OTOH the Cygwin DLL is a very special case.

So the cygwin DLL is likely to be the only PE/COFF dll that strip ever
encounters with a section marked as debug in the middle of a file?  If it
is ever expected that other DLLs will have the same property, then yes,
strip should be taught to not strip intermediate debug sections; but if it
is just cygwin1.dll, I can live with the rule of thumb of "don't do it if
it hurts".

- --
Life is short - so eat dessert first!

Eric Blake             ebb9 AT byu DOT net
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (Cygwin)
Comment: Public key at home.comcast.net/~ericblake/eblake.gpg
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFDa2XM84KuGfSFAYARAv1EAJ4zk9aROsY6OxB4q6UdLwbAt1NJpwCgxNIY
fKtZBAbvuCsGIJ1kBLX87f4=
=Xxql
-----END PGP SIGNATURE-----

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -