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
Date: Wed, 29 Sep 2004 11:20:01 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Problems on Itanium: Found the Cause, What's Next?
Message-ID: <20040929092001.GL14978@cygbert.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <200409281232 DOT i8SCWDab029529 AT www3 DOT pochta DOT ru>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200409281232.i8SCWDab029529@www3.pochta.ru>
User-Agent: Mutt/1.4.2i

On Sep 28 16:32, Alexei Alexandrov wrote:
> If you compile this code with 32-bit compiler and then run it on 64-bit Server 2003 it will crash. At the same time it 
> works on 32-bit machines.

It also works fine on a x86_64 machine in 32 bit mode.

> So the questions is to cygwin developers: what can be done next? I\'ve found file wincap.cc with particular platforms 
> capability descriptions. I\'ve tried to set has_working_copy_on_write to false when IsWow64Process return true and it 
> seems to work, but how can I be sure that I didn\'t break anything else? Are there any tests or something? And generally 
> is this fix OK? Which drawbacks can it have? If the fix is OK - let me know, I will provide a patch.

No, because this would also exclude x86_64 machines.

Actually I'm somewhat in doubt that CreateFileMapping/MapVieOfFile
functionality should actually be so broken on the ia64 platform.
Are you really sure that the culprit isn't somewhere else?
Your test application uses a very common idiom, so I'd guess that
a lot more applications would fail miserably on ia64 in 32 bit mode.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

--
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/