Xref: utzoo comp.sys.atari.st:16623 comp.misc:6179
Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!ucsd!ucbvax!tut.cis.ohio-state.edu!cs.utexas.edu!uunet!mcvax!siebren
From: siebren@cwi.nl (Siebren van der Zee)
Newsgroups: comp.sys.atari.st,comp.misc
Subject: Re: Mark Williams C
Message-ID: <8137@boring.cwi.nl>
Date: 23 May 89 10:55:29 GMT
References: <24094@agate.BERKELEY.EDU> <431fba10.14a1f@gtephx.UUCP> <8120@boring.cwi.nl> <857@per2.UUCP>
Sender: news@cwi.nl
Organization: CWI, Amsterdam
Lines: 34

In article <857@per2.UUCP> dag@per2.UUCP (Daniel A. Glasser) writes:
>In article <8120@boring.cwi.nl>, steven@cwi.nl (Steven Pemberton) writes:
>> Surprisingly, Mark Williams C 2.0 already has a lot of ANSI C in it.
>> But the naughties, they #define __STDC__ but do *not* implement all of

>__STDC__ is defined as 0 in MWC V3.0 (and earlier).  This means that the
	[...]
>Ie, don't use "#ifdef __STDC__", use instead "#if __STDC__".  If the
>macro is undefined, the #if evaluates to false.  If your preprocessor
>does not allow #if on undefined symbols, it isn't even Unix V7 compatible.
>Section 3.8.8 of the ANSI X3J11 standard defines __STDC__ to be the
>decimal constant 1.

(Steven is a collegue of mine, I complained about this on the net too)
So what? They put in an annoying symbol that has _NO_ meaning, and _NO_
purpose other that polluting my namespace. Remember that once, a long,
long time ago, #if did not even exist. Not even for defined symbols.

Steven's config program works for all compilers I know of, including one
that doesn't implement #if. Ever thought about how careful you have to
code to accomplish that? Ok, then MWC comes around, defines a macro
without any meaning, but completely correct.
He had to make a decision whether to support MWC or the other compiler.
I think his decision not to support MWC V3 is the right one, especially
since they are probably working on an ANSI version.

>
>It is not the compiler that has it wrong...

That right. But that doesn't solve our problems.
If only somebody could explain to me what use the definition of __STDC__
as 0 might mean, why I might want to have my compiler to define it...

	Siebren van der Zee, siebren@cwi.nl -- waiting for MWC V4