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From: Alan Shutko <ats@acm.org>
To: Marco Colombo <marco@esi.it>
Cc: Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] More compile warning fixes for 2.4.0
Date: 10 Jan 2001 11:52:56 -0500	[thread overview]
Message-ID: <874rz7pcwn.fsf@wesley.springies.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0101101619230.16888-100000@Megathlon.ESI>
In-Reply-To: <Pine.LNX.4.21.0101101619230.16888-100000@Megathlon.ESI>

Marco Colombo <marco@esi.it> writes:

> But what happens if I delete the stm1 line? We have:
> 
> 	case xxx:
> 		/* fallthrough */
> 	case yyy:
> 		stm2;
> 
> which is wrong. 

AFAIK, that's perfectly correct.  It's only the case where you have a
label at the end of a block (without a statement following it) where
it's an error.

In the grammar, a statement must follow a label, but a
labeled-statement is a type of statement, so you can stack labels as
much as you want, as long as there's a statement somewhere after them.

That is, assuming I'm reading the standard right (ISO/IEC 9899:1990,
Section 6.6, 6.6.1).        

-- 
Alan Shutko <ats@acm.org> - In a variety of flavors!
Programmers do it bit by bit.
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  reply	other threads:[~2001-01-10 16:53 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-01-07  2:40 [PATCH] More compile warning fixes for 2.4.0 Rich Baum
2001-01-07 12:41 ` Paul Gortmaker
2001-01-07 13:17   ` Keith Owens
2001-01-08 19:50 ` Erik Mouw
2001-01-08 20:17   ` Alan Cox
2001-01-09  5:30   ` Richard Henderson
2001-01-09 10:02     ` Albert D. Cahalan
2001-01-09 15:10       ` Richard B. Johnson
2001-01-09 18:51       ` Linus Torvalds
2001-01-09 21:24         ` Albert D. Cahalan
2001-01-09 21:31           ` Linus Torvalds
2001-01-10  2:20             ` Andrea Arcangeli
2001-01-10  7:10               ` Linus Torvalds
2001-01-10 13:17                 ` Rich Baum
2001-01-10 13:32                 ` Andrea Arcangeli
2001-01-10 16:03                 ` Marco Colombo
2001-01-10 16:52                   ` Alan Shutko [this message]
2001-01-10 17:32                     ` Marco Colombo
2001-01-10 17:19                   ` Linus Torvalds
2001-01-10 18:02                     ` Marco Colombo
2001-01-10  1:58         ` Rich Baum
2001-01-09  1:23 ` Rich Baum

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