Article View: comp.std.c
Article #3231Re: gcc and NULL function pointers.
From: Blair P. Houghton
Date: Fri, 28 Jun 1991 02:39
Date: Fri, 28 Jun 1991 02:39
17 lines
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1313 bytes
In article <1991Jun27.190107.627@cirrus.com> dhesi@cirrus.com (Rahul Dhesi) writes: >And the bottom line: > > All definitions of NULL other than 0 are wrong, no matter how > much or how little ANSI-conformant they may be. Well, no, they aren't "wrong", they're just redundant, because it is true in all cases that the only "right" way to _use_ NULL is to cast it to a type compatible with the object, pointer, or function parameter being set to or compared against NULL, and then not to use it for anything but pointer types (which are explicitly defined to be tolerant of wacky chains of casts of their null value). --Blair "But this will have changed by the next time I see this posting, so I'm going to go take another nap..."
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!lll-winken!uunet!iWarp.intel.com!ichips!inews!pima!bhoughto From: bhoughto@pima.intel.com (Blair P. Houghton) Newsgroups: comp.std.c Subject: Re: gcc and NULL function pointers. Message-ID: <4910@inews.intel.com> Date: 28 Jun 91 02:39:31 GMT References: <16506@smoke.brl.mil> <17605.Jun2607.39.3591@kramden.acf.nyu.edu> <1991Jun27.190107.627@cirrus.com> Sender: news@inews.intel.com Organization: Intel Corp, Chandler, AZ Lines: 17