Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!lethe!yunexus!shields
From: shields@yunexus.YorkU.CA (Paul Shields)
Newsgroups: comp.lang.c
Subject: Re: NULL question not in FAQ
Message-ID: <22155@yunexus.YorkU.CA>
Date: 27 Mar 91 09:37:39 GMT
References: <1991Mar26.235643.4498@ux1.cso.uiuc.edu>
Organization: York U. Computing Services
Lines: 16

phil@ux1.cso.uiuc.edu (Phil Howard KA9WGN) writes:

>Given that the compiler is supposed to translate the constant "0" to the
>appropriate value for a NULL pointer on the machine type, how does one
>get a pointer value whose representation happens to be all zeroes, but
>is a non-NULL pointer?

>Are all of these equivalent or are any differnt?
 [.. examples deleted..]

I think all the original examples are equivalent.  But if the stored 
value for a NULL pointer is something other than all 0 bits, then
erhaps this will do it...

     char *x;
     memset( &x, 0, sizeof(char *));