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Date: Sat, 20 Sep 1997 20:15:41 +0200 (MET DST)
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From: Eivind Eklund <perhaps@yes.no>
To: Mike Smith <mike@smith.net.au>
CC: jonny@coppe.ufrj.br, phk@FreeBSD.ORG, cvs-committers@FreeBSD.ORG,
        cvs-all@FreeBSD.ORG, cvs-gnu@FreeBSD.ORG
In-reply-to: Mike Smith's message of Fri, 19 Sep 1997 11:44:57 +0930
Subject: Re: cvs commit: src/gnu/usr.bin/as/config atof-ieee.c src/gnu/usr.bin/ld/rtld rtld.c src/gnu/usr.bin/man/man man.c 
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	<199709190214.LAA03946@word.smith.net.au>
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> 
> > #define quoting(Poul-Henning Kamp)
> > //   Many places in the code NULL is used in integer context, where
> > //   plain 0 should be used.  This happens to work because we #define
> > //   NULL to 0, but is stylistically wrong and can cause problems
> > //   for people trying to port bits of code to other environments.
> > 
> > Is there any problem in defining NULL to ((void *)0) ?
> > 
> > Sorry if I'm forgetting something stupid...
> 
> Only that this list is inhabited by countless C lawyers.  8)
> 
> The standard defines NULL quite explicitly.  Deviating from the 
> standard is Bad.  0 -> NULL, but NULL !-> 0.

<C LAWYER>((void*)0) is a correct definition of NULL.  The other
correct definition is 0.</C LAWYER>

I think the tree should be made compile and lint cleanly with both
definitions; I might look into it some day, but don't volunteer my
time right now.  (I have other FreeBSD I've promised to do with a
much higher priority.)

Eivind.