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Date: Wed, 31 Oct 2012 03:42:58 -0400
From: Mike Jakubik <mike.jakubik@intertainservices.com>
To: Jason Andresen <jandrese@vt.edu>
Subject: Re: [Call for Testers] VirtualBox 4.2.4
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 =?UTF-8?Q?Bernhard_Fr=C3=B6hlich?= <decke@freebsd.org>,
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On 2012-10-30 08:07 PM, Jason Andresen wrote:
> On Oct 30, 2012, at 15:56, Bernhard Fröhlich <decke@FreeBSD.org> 
> wrote:
>
>> Clang does not support global registered variables so it's not 
>> supposed to
>> work.
>
> Is this a feature?  Is there a reason why clang couldn't be updated
> to support this if actual software is using it?

It is a feature, but it appears to be a dirty one. Below is a link to a 
supposed Apple developer explaining the lack of this feature. I'm not a 
programmer but a humble sysadmin, so i do not know if this is true.

http://nondot.org/sabre/LLVMNotes/GlobalRegisterVariables.txt

Thanks.