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Date:	Wed, 21 Jan 2004 11:48:24 +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
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	<200401201626 DOT i0KGQ7d8026812 AT envy DOT delorie DOT com>
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On Tue, 20 Jan 2004, DJ Delorie wrote:

> 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.

Strict ANSI C may say so, but GNU C has 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 the 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.

Yes, but I thought that the difference was a reason _not_ to use literal
zero when it would be implicitly cast to a pointer.

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

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