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Date: | Wed, 24 Jun 2009 15:37:22 -0400 |
From: | Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: 1.7 winbase.h (ilockcmpexch) compile error |
Message-ID: | <20090624193721.GD1472@ednor.casa.cgf.cx> |
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On Wed, Jun 24, 2009 at 07:40:39PM +0100, Dave Korn wrote: >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.) Me neither. I'm comfortable making gcc 4.x a requirement for building Cygwin and its utilities. Apparently Corinna is using 4.x since this change predates at least two previous 1.7.0 releases. cgf -- 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
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