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Date: Fri, 29 Jun 2012 09:23:19 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: /dev/clipboard corrupted
Message-ID: <20120629072319.GA30342@calimero.vinschen.de>
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On Jun 28 20:33, Thomas Wolff wrote:
> Am 28.06.2012 10:20, schrieb Corinna Vinschen:
> >On Jun 28 00:16, Thomas Wolff wrote:
> >>If the clipboard contains large data, the contents retrieved from
> >>/dev/clipboard gets corrupted.
> >>I compared the following in a few cases:
> >>* cat /dev/clipboard or cp /dev/clipboard (which are equal)
> >>* mouse-paste into mintty, read with cat
> >>* read /dev/clipboard within application
> >>
> >>and I found all three results to be different, the correct one
> >>sometimes being cat /dev/clipboard but not always.
> >>In today's case, the differences occured at byte 10240 and 65536
> >>respectively, thus 10K-1 bytes or 64K-1 bytes being equal.
> >I can't reprocude this.  There's also nothing in the /dev/clipboard
> >code which would rely on a 10K buffer or so.  64K, yes.  But still,
> >I tried with wordpad, vi, mintty, cat, and cp with a text file of
> >about 90K.  No problems.  Do you have any reproducible testcase?
> Not really reproducible (maybe later) but some more observations.
> I made a small test program to read /dev/clipboard directly with
> different buffer sizes.

You know, we just love STCs.  Send you small test program here, plus a
short instruction how you created the clipboard content and how to call
the testcase to see the problem.


Corinna

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

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