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From: goudreau@dg-rtp.dg.com (Bob Goudreau)
Newsgroups: comp.lang.c
Subject: Re: Seven Original Sins of K&R (Long)
Message-ID: <1990Sep28.214000.14582@dg-rtp.dg.com>
Date: 28 Sep 90 21:40:00 GMT
References: <12780@sdcc6.ucsd.edu> <1990Sep26.163927.26084@dg-rtp.dg.com>  <1990Sep28.112637.10446@zeus.usq.edu.au>
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Reply-To: goudreau@dg-rtp.dg.com (Bob Goudreau)
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In article <1990Sep28.112637.10446@zeus.usq.edu.au>,
s64421@zeus.usq.edu.au (house ron) writes:
> goudreau@dg-rtp.dg.com (Bob Goudreau) writes:
> 
> >In article <1990Sep26.193626.721@phri.nyu.edu>, roy@phri.nyu.edu
(Roy
> >Smith) writes:
> >> 
> >> #define NULL (""[1])
> >> 
> >> would that work?
> 
> >Nope; it's not even *defined* behavior to access beyond the end of
> >an array, which is what you've done.
> 
> I think he means 
> 
>    #define NULL (""[0])

... which is still wrong, though at least it's a legal array access.
The NUL character ('\0') is *not* the same as the null pointer.  See
the FAQ posting for details.
 
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