From -3725625386287173796 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,f1dec9ce20a9c98f X-Google-Attributes: gidf78e5,public From: clamage@eng.sun.com (Steve Clamage) Subject: Re: null pointers (was: Why's of C++ -- Part 1) Date: 1999/08/19 Message-ID: <7pdh80$qaf$1@engnews1.eng.sun.com>#1/1 X-Deja-AN: 514601012 Approved: Fergus Henderson References: <7opqvm$vpa$1@news.hal-pc.org> <37B7C714.44E4EFB4@lucent.com> <7pcoem$105@abyss.West.Sun.COM> X-Original-Date: 18 Aug 1999 05:44:32 GMT X-Complaints-To: news@news.unimelb.edu.au X-Trace: izvestia.its.unimelb.edu.au 935050897 15074 128.250.29.17 (19 Aug 1999 08:21:37 GMT) Organization: Sun Microsystems Inc., Mountain View, CA X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUAN7u+fOEDnX0m9pzZAQF6aQF+KYwcAnFEq5F8EsQ2QEGaTC9kOVrZbRLS oAEsGUdgHeT0fUGtUikIvxeysP1Mpeia =esha NNTP-Posting-Date: 19 Aug 1999 08:21:37 GMT Newsgroups: comp.std.c++ stanley@West.Sun.COM (Stanley Friesen [Contractor]) writes: >The special case would be exactly and only the token sequence "(void *)0". >There is no reason to extend it to integers that happen to have the value >zero. That is not particularly useful. But there is utility in accepting the same null pointer constants that C accepts. In C, any constant integer expression with value 0, or that value cast to void*, is a null pointer constant. I don't see the benefit in accepting (void*)0 but rejecting, for example, ((void*)0L). -- Steve Clamage, stephen.clamage@sun.com --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html ]