Message-ID: <094001bfe77c$a0314e10$4f0cf5d1@wt.net>
From: "RH" <rdh AT wt DOT net>
To: <pgcc AT delorie DOT com>
References: <D1674834F25BD3118B3208002BB90CD450DEBF AT yen DOT crl DOT dec DOT com> <3964C164 DOT 22648267 AT mira DOT net>
Subject: Re: What's up with this??
Date: Thu, 6 Jul 2000 13:01:42 -0600
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 5.00.2314.1300
X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id PAA20934
Reply-To: pgcc AT delorie DOT com

That's what I would have thought.  Adding braces should be enough?

Consider a macro like this:

#define doit() { call_something(); call_something_else(); }

And then this:

if ()
   doit();

Becomes
if ()
    { call_something(); call_something_else();};

----- Original Message ----- 
From: Antony Suter <antony AT mira DOT net>
To: <pgcc AT delorie DOT com>
Sent: Thursday, July 06, 2000 11:27 AM
Subject: Re: What's up with this??


> What is the two line explanation as to why it cant be:-
> 
> { \
> /* stuff */ \
> }
> 
> George France wrote:
> > 
> > It is not moot; it is so that inline macro's expand properly. See the gcc or
> > linux-kernel archives for more details.
> > 
> > -----Original Message-----
> > From: RH [mailto:rdh AT wt DOT net]
> > 
> > I have been wondering why in the world is code mostly in macros of the form.
> > 
> > do {
> >     /*stuff*/
> > while(0);
> > 
> > I don't get this... Seems stupid and pointless.  So I would just like an
> > explination and if its moot now a days, why don't people start removing
> > them...
> 
> --
> - Antony Suter  (antony AT mira DOT net)  'Examiner'
> - "And how do you store the nuclear equivalent of the universal
> solvent?"
>