Re: Zero-length structures and pointer comparisons

Article View: comp.std.c++

Article #1118

#1118

From: Fergus James HENDERSON
Date: Mon, 21 Dec 1992 11:06

22 lines
1399 bytes

maxtal@extro.ucc.su.OZ.AU (John MAX Skaller) writes:

>pat@frumious.uucp (Patrick Smith) writes:
>>   p == q   =>   ptrcmp(p,q) == 0
>
>	I'm NOT agreeing with this at present. I reject any relationship
>between p ? q and ptrcmp. On some machines any such relationship
>might make ptrcmp unimplementable, and thus defeat the proposal completely.

I remain unconvinced that such a relationship is unimplementable on
some machines.

>It is only Jims suggestion that ptrcmp might always return 0 that
>makes it possible to make its existence mandatory.

A ptrcmp that always returned 0 would be useless, IMHO.

-- 
Fergus Henderson             fjh@munta.cs.mu.OZ.AU      
This .signature virus is a self-referential statement that is true - but 
you will only be able to consistently believe it if you copy it to your own
.signature file!

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<1992Dec9.133956.29659@lth.se> <1992Dec9.191606.5665@lucid.com> <BzCG7K.2sG@frumious.uucp> <1992Dec18.192202.17023@ucc.su.OZ.AU>

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Newsgroups: comp.std.c++
Path: arc1-ca.pugleaf.net!sparky!uunet!munnari.oz.au!cs.mu.OZ.AU!munta.cs.mu.OZ.AU!fjh
From: fjh@munta.cs.mu.OZ.AU (Fergus James HENDERSON)
Subject: Re: Zero-length structures and pointer comparisons
Message-ID: <9235622.25712@mulga.cs.mu.OZ.AU>
Sender: news@cs.mu.OZ.AU
Organization: Computer Science, University of Melbourne, Australia
References: <1992Dec9.133956.29659@lth.se> <1992Dec9.191606.5665@lucid.com> <BzCG7K.2sG@frumious.uucp> <1992Dec18.192202.17023@ucc.su.OZ.AU>
Date: Mon, 21 Dec 1992 11:06:35 GMT
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