From: Michael Meissner <meissner@spectacle-pond.org>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Franz Sirl <Franz.Sirl-kernel@lauterbach.com>,
"Richard B. Johnson" <root@chaos.analogic.com>,
Mike Black <mblack@csihq.com>,
"linux-kernel@vger.kernel.or" <linux-kernel@vger.kernel.org>
Subject: Re: 2.2.18 signal.h
Date: Fri, 15 Dec 2000 15:31:30 -0500 [thread overview]
Message-ID: <20001215153130.B24830@munchkin.spectacle-pond.org> (raw)
In-Reply-To: <Pine.LNX.3.95.1001215120537.1093A-100000@chaos.analogic.com> <20001215175632.A17781@inspiron.random> <Pine.LNX.3.95.1001215120537.1093A-100000@chaos.analogic.com> <20001215184325.B17781@inspiron.random> <4.3.2.7.2.20001215185622.025f8740@mail.lauterbach.com> <20001215195433.G17781@inspiron.random>
In-Reply-To: <20001215195433.G17781@inspiron.random>; from andrea@suse.de on Fri, Dec 15, 2000 at 07:54:33PM +0100
On Fri, Dec 15, 2000 at 07:54:33PM +0100, Andrea Arcangeli wrote:
> On Fri, Dec 15, 2000 at 06:59:24PM +0100, Franz Sirl wrote:
> > It's required by ISO C, and since that's the standard now, gcc spits out a
> > warning. Just adding a ; is enough and already done for most stuff in
> > 2.4.0-test12.
>
> I'm not complaining gcc folks, I just dislike the new behaviour in general,
> it's inconsistent.
>
> This is wrong:
>
> x()
> {
>
> switch (1) {
> case 0:
> case 1:
> case 2:
> case 3:
> }
> }
>
> and this is right:
>
> x()
> {
>
> switch (1) {
> case 0:
> case 1:
> case 2:
> case 3:
> ;
> }
> }
>
> Why am I required to put a `;' only in the last case and not in all
> the previous ones? Or maybe gcc-latest is forgetting to complain about
> the previous ones ;)
Because neither
<label>: (nor)
case <expr>: (nor)
default:
are statements by themselves. They are an optional start of a statement. The
ebnf looks like:
statement:
labeled-statement
| expression-statem
| compoundstatement
| selection-statement
| iteration-statement
| jump-statement
labeled-statement:
identifier ':' statement
| 'case' constant-expression ':' statement
| 'default' ':' statement
--
Michael Meissner, Red Hat, Inc. (GCC group)
PMB 198, 174 Littleton Road #3, Westford, Massachusetts 01886, USA
Work: meissner@redhat.com phone: +1 978-486-9304
Non-work: meissner@spectacle-pond.org fax: +1 978-692-4482
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next prev parent reply other threads:[~2000-12-15 20:57 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-15 16:29 2.2.18 signal.h Mike Black
2000-12-15 16:56 ` Andrea Arcangeli
2000-12-15 17:07 ` Richard B. Johnson
2000-12-15 17:43 ` Andrea Arcangeli
2000-12-15 17:59 ` Franz Sirl
2000-12-15 18:34 ` Richard B. Johnson
2000-12-15 18:50 ` Alan Cox
2000-12-15 19:06 ` Horst von Brand
2000-12-15 20:15 ` Michael Meissner
2000-12-15 18:54 ` Andrea Arcangeli
2000-12-15 19:18 ` Ulrich Drepper
2000-12-15 19:57 ` Andrea Arcangeli
2000-12-15 20:09 ` Rik van Riel
2000-12-15 20:22 ` Andrea Arcangeli
2000-12-16 7:53 ` Anuradha Ratnaweera
2000-12-16 13:52 ` Andrea Arcangeli
2000-12-19 16:53 ` Michael Meissner
2000-12-15 19:55 ` Rik van Riel
2000-12-15 20:14 ` Andrea Arcangeli
2000-12-21 18:18 ` Thomas Dodd
2001-01-02 16:55 ` Andrea Arcangeli
2000-12-15 20:31 ` Michael Meissner [this message]
2000-12-17 5:27 ` Albert D. Cahalan
2000-12-15 21:56 Jesse Pollard
2000-12-15 22:22 ` Andrea Arcangeli
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