From owner-freebsd-current  Wed Nov  7 20: 4:23 2001
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Subject: Re: malloc.h
In-Reply-To: <200111080237.fA82bGO28786@khavrinen.lcs.mit.edu>
To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Date: Thu, 8 Nov 2001 05:04:17 +0100 (CET)
Cc: freebsd-current@FreeBSD.ORG
Reply-To: clefevre@citeweb.net
From: Cyrille Lefevre <clefevre@citeweb.net>
Organization: ACME
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Garrett Wollman wrote:
> <<On Thu, 8 Nov 2001 01:20:50 +0100 (CET), Cyrille Lefevre <clefevre@citeweb.net> said:
> 
> > Joerg Wunsch wrote:
> >> Sheldon Hearn <sheldonh@starjuice.net> wrote:
> >> 
> >> > This is how we've decided to encourage progress in this specific
> >> > case of header misuse.
> >> 
> >> IMHO the current version of <malloc.h> is wrong.  This header
> >> file used to be a legitimate header file prior to ANSI C.  So
> >> it should be
> >> 
> >> #if __STDC__
> 
> > this statement is wrong. it should be
> 
> > #ifdef __STDC__
> 
> > or
> 
> > #if (__STDC__-0) == 0
> 
> No, it shouldn't.  Leavinmg aside the correctness of the previous
> suggestion, anyone who explicitly defines __STDC__ to be the empty
> string should get what he deserves.  In preprocessor expressions, any
> identifiers left after macro substitution are considered to have a
> value of zero.

I haven't access to a Solaris or an HP box, but I'm not really sure
that all compilers follow this rule in K&R mode. IMHO, you are lucky
this works w/ gcc -traditional (I've just verified).

Cyrille.
-- 
Cyrille Lefevre                 mailto:clefevre@citeweb.net

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