Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/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: Fri, 18 Oct 2002 00:19:29 +0200
From: Pavel Tsekov <ptsekov AT gmx DOT net>
X-X-Sender: paveltz AT MORDOR
To: cygwin AT cygwin DOT com
Subject: Re: File permission problems with new cygwin dll
In-Reply-To: <20021017175543.GA13272@redhat.com>
Message-ID: <Pine.CYG.4.44.0210180010440.2044-100000@MORDOR>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Thu, 17 Oct 2002, Christopher Faylor wrote:

> On Thu, Oct 17, 2002 at 03:17:11PM +1300, Ross Smith wrote:
> >If you take any command-line program that writes to stdout -- plain old
> >"hello world" will do fine -- compile it with gcc, and run it several
> >times with >> somefile, then you get a file containing several copies
> >of "hello world", as you'd expect. But if you compile it with Visual
> >C++ instead, then instead of appending to the file, it just overwrites
> >the beginning of the file every time.
>
> Should be fixed in cvs.  I'm generating a snapshot.
>
> The problem was caused by this change from Pavel Tsekov:
>
> http://sources.redhat.com/ml/cygwin-cvs/2002-q3/msg00064.html
>
> I had a nagging feeling that this was a problem when it was checked in.
>
> My fix still keeps this patch but it resets file pointers before execing
> a new process.  That seems to work.

I should have been more careful. My mistake is that I didn't understand
why the file pointer should be moved on open () back then. Removing this
code fixed an "obivious" bug and seemed reasonable. Now as I looked at
the code you've checked in dtable.cc, everything seems clear.

Sorry :(


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/