Article View: comp.std.c
Article #5591Re: __STDC__ and non-conforming ANSI C compilers
From: Doug Gwyn
Date: Mon, 16 Jan 1989 15:21
Date: Mon, 16 Jan 1989 15:21
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In article <2788@mhres.mh.nl> jv@mhres.mh.nl (Johan Vromans) writes: >From article <9369@smoke.BRL.MIL>, by gwyn@smoke.BRL.MIL (Doug Gwyn ): >> Apart from screaming at MicroSoft about this brain damage, I guess we >> all have now been forced to use "#if __STDC__" to survive that stupid >> decision. >... which will yield a nice warning "__STDC__ not defined, >treated as zero" in at least one C implementation I know. Strange implementation, but at least you can ignore such warnings. If this becomes a real problem for you, you can use #if defined(__STDC__) && __STDC__ but then there are C implementations that don't allow defined() to be used in expressions, if at all, so the next attempt is #ifdef __STDC__ #if __STDC__ but if somebody's implementation stupidly #defines __STDC__ as the symbol "almost" then you're completely out of luck. Obviously the original desire for #ifdef __STDC__ to work right is a sensible desire; it avoids the warnings you mention without causing any other problems, IF the compiler vendors would get their act together and not #define __STDC__ unless they (fully) conform to the Standard.
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!ames!mailrus!uflorida!haven!adm!smoke!gwyn From: gwyn@smoke.BRL.MIL (Doug Gwyn ) Newsgroups: comp.std.c Subject: Re: __STDC__ and non-conforming ANSI C compilers Message-ID: <9392@smoke.BRL.MIL> Date: 16 Jan 89 15:21:36 GMT References: <9369@smoke.BRL.MIL> <2788@mhres.mh.nl> Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>) Organization: Ballistic Research Lab (BRL), APG, MD. Lines: 24