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
Delivered-To: mailing list cygwin AT cygwin DOT com
Date: Wed, 6 Feb 2002 17:38:13 -0500
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: DirectX8/DirectInput + cygwin
Message-ID: <20020206223813.GA17394@redhat.com>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <002301c1aef8$228e5440$2801a8c0 AT dcuthbert2k> <3C610F7E DOT 5020306 AT syntrex DOT com> <20020206172903 DOT GE31367 AT redhat DOT com> <3C6171A9 DOT 2080702 AT syntrex DOT com> <20020206181851 DOT GF11730 AT redhat DOT com> <035a01c1af4b$b598e9f0$a7eb0544 AT CX535256D> <20020206203254 DOT GD14490 AT redhat DOT com> <03a001c1af5d$1c05dc50$a7eb0544 AT CX535256D>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <03a001c1af5d$1c05dc50$a7eb0544@CX535256D>
User-Agent: Mutt/1.3.23.1i

On Wed, Feb 06, 2002 at 02:24:57PM -0800, Barubary wrote:
>> Aren't virtual tables a feature of "C++"?
>
>I'm talking about the specific implementation of the virtual table - the
>layout of the function pointers relative to the "this" pointer.  The
>location and format of the vtable relative to the "this" pointer in Visual
>C++ is patented by Microsoft.  I wish I knew the patent number...

I'm talking about the fact that I said that "non-c++" import libraries
should work correctly.  You countered with a question about "Microsoft's
patented virtual table system".

If the virtual table system is used in non-c++ libraries then this is an
issue.  Otherwise, again, non-c++ import libraries should work ok with
'ld'.

The reason that I said "non-c++" is specifically because gcc/gas/ld
don't understand Microsoft's C++ object file layout.

cgf

--
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/