Sender:	rich AT phekda DOT freeserve DOT co DOT uk
Message-ID:	<3EAA4432.E5FD11A6@phekda.freeserve.co.uk>
Date:	Sat, 26 Apr 2003 09:32:50 +0100
From:	Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
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To:	djgpp-workers AT delorie DOT com
Subject:	Re: nmalloc revisited
References:	<10304260325 DOT AA18541 AT clio DOT rice DOT edu>
Reply-To:	djgpp-workers AT delorie DOT com

Hello.

Charles Sandmann wrote:
> 
> > And that is the point.  -ansi -pedantic HAS to exclude it.
> > Otherwise the system is non-compliant.
> 
> There is an entire section in stdlib.h which is already
> excluded - no need to put things in additional files.

To elaborate, there are some defines which control what is visible in a
module's namespace:

__STRICT_ANSI__
(__STDC_VERSION__ && __STDC_VERSION__ > 199901L) || !__STRICT_ANSI__
_POSIX_SOURCE

If you don't define anything, you get everything. If you define _POSIX_SOURCE,
you get all the C and POSIX things. If you define __STRICT_ANSI__, you get
just C89 stuff. If you define __STRICT_ANSI__ and __STDC_VERSION__
appropriately for C99, you get C99 stuff. Note that the compiler will define
__STRICT_ANSI__, __STDC_VERSION__ for you, depending on the switches. I think
_POSIX_SOURCE has to be defined using -D or #define before including the
appropriate file.

So all the "de facto" standard stuff would go in the section marked:

#ifndef _POSIX_SOURCE
...
#endif /* !_POSIX_SOURCE */

The C99 sections are in CVS or, now, alpha 1.

Bye, Rich =]

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]

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