Two standards problems

[Doug Gwyn]

In article <800 at cbnewsl.ATT.COM> dfp at cbnewsl.ATT.COM (david.f.prosser) writes:
>	#define XtOffset(p, m) offsetof(*(p), m)

In preparing my previous response to the question, I considered something
similar, but it wasn't clear to me from the draft Standard exactly what
was acceptable for the "type" argument to offsetof().  In particular the
use of
	static type t;
in the Standard bothered me; if one substitutes literally for "type" in
that template, will constructs such as "*(p)" where "p" is a type name
work?  Some types need the identifier "t" buried inside them.  Anyway,
the proper declaration in this case would seem to be
	static p *t;
so shouldn't the "type" argument to offsetof() be "p*"?  I don't think
this was specified clearly enough in the draft (although I would be happy
to be proved wrong on this point).