Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!cica!tut.cis.ohio-state.edu!ucbvax!decwrl!decvax!ima!cfisun!lakart!dg
From: dg@lakart.UUCP (David Goodenough)
Newsgroups: comp.unix.wizards
Subject: Re: Referencing NULL pointers
Message-ID: <621@lakart.UUCP>
Date: 17 Jul 89 14:58:17 GMT
References: <1382@bruce.OZ>
Organization: Lakart Corporation, Newton, MA
Lines: 28

vohra@uts.amdahl.com (Pavan Vohra) sez:
> I would say that the code is valid.
> 
> Try a rewrite: "x= ((struct somestruct *)0)->somefield".

I have never been comfortable with this construct, and would submit the
following as a "safer" replacement:

	struct somestruct stuff;

	x = (char *) (&stuff.somefield) - (char *) (&stuff);

Comments?????

The above assumes that somefield is not an array: if it is you can take
your pick of:

	stuff.somefield

and:

	&stuff.somefield[0]

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