Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!decwrl!decvax!ima!haddock!karl
From: karl@haddock.ima.isc.com (Karl Heuer)
Newsgroups: comp.lang.c
Subject: Re: %p and different pointer representations
Message-ID: <11947@haddock.ima.isc.com>
Date: 3 Mar 89 21:37:38 GMT
References: <11915@haddock.ima.isc.com> <9765@smoke.BRL.MIL> <9571@bloom-beacon.MIT.EDU>
Reply-To: karl@haddock.ima.isc.com (Karl Heuer)
Organization: Interactive Systems, Boston
Lines: 13

In article <9571@bloom-beacon.MIT.EDU> scs@adam.pika.mit.edu (Steve Summit) writes:
>In article <11915@haddock.ima.isc.com> karl@haddock.ima.isc.com (Karl Heuer) writes:
>>Therefore, a completely generic pointer type (to function or data) is
>>`union {void (*)(void); void *}', though I can't think of any practical
>>use for such a thing.
>
>[Symbol table, etc.]

I stand corrected.  I was thinking in terms of using the union as a type pun;
a tagged union (or any other protocol which guarantees that the member fetched
is the one most recently stored) is indeed useful.

Karl W. Z. Heuer (ima!haddock!karl or karl@haddock.isc.com), The Walking Lint