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Re: 0 vs. NULL (RE: Worrisome warnings after recent patches)

X-seq: zsh-workers 5633
From: Bernd Eggink <eggink@xxxxxxxxxxxxxx>
To: Andrej Borsenkow <borsenkow.msk@xxxxxx>
Subject: Re: 0 vs. NULL (RE: Worrisome warnings after recent patches)
Date: Thu, 04 Mar 1999 09:42:52 +0100
Cc: Sven Wischnowsky <wischnow@xxxxxxxxxxxxxxxxxxxxxxx>, zsh-workers@xxxxxxxxxxxxxx
Mailing-list: contact zsh-workers-help@xxxxxxxxxxxxxx; run by ezmlm
Organization: RRZ Uni Hamburg
References: <000901be6619$6f8a6930$21c9ca95@xxxxxxxxxxxxxxx>
Sender: rz2a022@xxxxxxxxxxxxxx

Andrej Borsenkow wrote:
> 
> > +         Cline to, tn = NULL;
> 
> What is the point of using NULL to initialize null pointer. The only
> portable and official way is to use `0'(zero), that is garanteed to be
> converted to whatever representation null pointer has on a given system.

No, this applies to C++ only, not to C. In C you should use the NULL
macro or (void*)0. 

Bernd

--
Bernd Eggink
Regionales Rechenzentrum der Uni Hamburg
eggink@xxxxxxxxxxxxxxxxxx
http://www.rrz.uni-hamburg.de/eggink/BEggink.html

Follow-Ups:
- Re: 0 vs. NULL (RE: Worrisome warnings after recent patches)
  - From: Bruce Stephens

References:
- 0 vs. NULL (RE: Worrisome warnings after recent patches)
  - From: Andrej Borsenkow

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