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From: diamond@tkou02.enet.dec.com (diamond@tkovoa)
Newsgroups: comp.lang.c++
Subject: Re: references to dereferenced null pointers
Message-ID: <1448@tkou02.enet.dec.com>
Date: 9 Apr 90 06:13:28 GMT
References: <5764@videovax.tv.tek.com> <15126@cbnews.ATT.COM> <1435@tkou02.enet.dec.com> <58@cdss.UUCP>
Reply-To: diamond@tkou02.enet.dec.com (diamond@tkovoa)
Organization: Digital Equipment Corporation Japan , Tokyo
Lines: 12

In article <58@cdss.UUCP> culliton@cdss.UUCP (Tom Culliton) writes:

>Another thought that stems from this and a little puzzle :-) how would you
>implement sizeof as a macro?

I don't think you can.  How can a macro compute sizeof(-3) without using the
builtin sizeof?  (And in case you manage that, here are two more for you:
sizeof -3 (no parentheses needed with an expression), and sizeof(int).)

-- 
Norman Diamond, Nihon DEC     diamond@tkou02.enet.dec.com
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