X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-2.4 required=5.0 tests=AWL,BAYES_00,SPF_PASS
X-Spam-Check-By:	sourceware.org
Message-ID:	<4A427327.2010509@gmail.com>
Date:	Wed, 24 Jun 2009 19:40:39 +0100
From:	Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
User-Agent:	Thunderbird 2.0.0.17 (Windows/20080914)
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: 1.7 winbase.h (ilockcmpexch) compile error
References:	<Pine DOT CYG DOT 4 DOT 58 DOT 0906241239470 DOT 2248 AT PC1163-8460-XP DOT flightsafety DOT com>
In-Reply-To:	<Pine.CYG.4.58.0906241239470.2248@PC1163-8460-XP.flightsafety.com>
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
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

Brian Ford wrote:
> I'm trying to build Cygwin 1.7 from CVS to debug an ImageMagick problem on
> server 2008 that causes an access violation in cygwin1.dll.  Doe anyone
> know the work around for this issue?
> 
> g++ (GCC) 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)
> 
> winsup/cygwin/winbase.h: In
> member function `int pthread_mutex::_trylock(pthread*)':
> winsup/cygwin/winbase.h:59:
> warning: volatile register variables don't work as you might wish
> winsup/cygwin/winbase.h:63:
> error: can't find a register in class `AREG' while reloading `asm'
> 
> I presume it is related to this change:
> 
> http://cygwin.com/ml/cygwin-patches/2009-q2/msg00072.html
> 
> but I haven't had time to dig into the full problem.  Thanks for any help
> available.

  Argh.  Try hacking out the 'register' and '__asm ("%eax")' from the
declaration of the 'ret' variable on line 59.  Send me the generated thread.s
file offlist after finishing the build with --save-temps in the CFLAGS and
I'll check that the codegen is correct.

  (Haven't used 3.x to build the DLL in ages myself.)

    cheers,
      DaveK


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

- Raw text -