X-Spam-Check-By: sourceware.org
From: "Dave Korn" <dave DOT korn AT artimi DOT com>
To: <cygwin AT cygwin DOT com>
References: <1cbe225f0704160234u24b104a5o9b459178e895a5a8 AT mail DOT gmail DOT com> <1cbe225f0704160713q567ae44fg3d5cb1a9c1e0ab03 AT mail DOT gmail DOT com>
Subject: RE: C++ name with leading underscore character not Compiling
Date: Mon, 16 Apr 2007 15:27:57 +0100
Message-ID: <01ad01c78033$6db14510$2e08a8c0@CAM.ARTIMI.COM>
MIME-Version: 1.0
Content-Type: text/plain; 	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook 11
In-Reply-To: <1cbe225f0704160713q567ae44fg3d5cb1a9c1e0ab03@mail.gmail.com>
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT 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

On 16 April 2007 15:14, Chelton Evans wrote:

> Pre fixing the underscore character is a technique that was around
> before the language evolved.

> The compilers that I had used I had not encountered this before.

  :-)  Welcome to the post K'n'R world.  Things have changed a lot since
pre-1989; there's nothing else for it really, old code just has to be tidied
up.

> However after this discussion I will add the underscore character to
> the end of a variable instead of the start

  This is a well-used and fairly standard technique, particularly in
function-like macros where you want to avoid the risk of clashing with a
variable in the enclosed function.

> I went and checked the pre-processed code and a macro substitution had
> ocurred. 

  Heh, knew it.  Glad it's all cleared up now.

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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