X-Authentication-Warning: delorie.com: mail set sender to djgpp-workers-bounces using -f
Date: Fri, 23 Jan 2004 11:54:15 +0200 (EET)
From: Esa A E Peuha <peuha AT cc DOT helsinki DOT fi>
Sender: peuha AT sirppi DOT helsinki DOT fi
To: djgpp-workers AT delorie DOT com
Subject: Re: Patch for bsearch
In-Reply-To: <200401201626.i0KGQ7d8026812@envy.delorie.com>
Message-ID: <Pine.OSF.4.58.0401231150080.23983@sirppi.helsinki.fi>
References: <Pine DOT OSF DOT 4 DOT 58 DOT 0401201143590 DOT 29095 AT sirppi DOT helsinki DOT fi>
 <200401201626 DOT i0KGQ7d8026812 AT envy DOT delorie DOT com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Reply-To: djgpp-workers AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp-workers AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

On Tue, 20 Jan 2004, DJ Delorie wrote:

My previous reply to this seems to have been lost.

> One major problems with this.
>
> "void" has no size, so you can't do pointer arithmetic with it.  Any
> void* must be cast to a pointer to non-void to do pointer arithmetic.

In GNU C, sizeof(void) == 1 and therefore arithmetic on void pointers
works just like on char pointers.  Is there any reason not to use GNU
extensions in library sources?

> I'm also not a big fan of "NULL" in general, but it's OK in this case.
> In general, NULL is *not* the same as a literal zero.

I thought the whole point of that difference was _not_ to use literal
zero where it would be implicitly cast to a pointer.

-- 
Esa Peuha
student of mathematics at the University of Helsinki
http://www.helsinki.fi/~peuha/