GNU bug report logs - #766
23.0.60; interesting warning during compilation

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Package: emacs;

Reported by: Peter Dyballa <Peter_Dyballa <at> Freenet.DE>

Date: Sat, 23 Aug 2008 09:05:11 UTC

Severity: normal

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

Full log

Message #140 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Peter Dyballa <Peter_Dyballa <at> Freenet.DE>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 766 <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org
Subject: Re: bug#766: 23.0.60; interesting warning during compilation
Date: Sun, 24 Aug 2008 09:27:16 +0200

Am 24.08.2008 um 05:13 schrieb Eli Zaretskii:

> If you mean with sizeof, then the problem is that sizeof is not a
> preprocessing-time operator, so it cannot prevent the compiler from
> seeing the offending code.

You mean

	if (sizeof (s.st_ino) > 4)

introducing the shift operation will fail to keep the compiler from  
emitting the warning?


Anyway, I think Andreas Schwab's proposition to split the one wide  
shift into two shorter ones is better. And the original code relies  
on an undefined behaviour of every compiler, which might change.

--
Greetings

  Pete

No project was ever completed on time and within budget.
				– Cheops Law
This bug report was last modified 16 years and 319 days ago.

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