Referencing NULL pointers

[David Goodenough]

vohra at 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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