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From: Mark Mitchell <mark@codesourcery.com>
To: Ian Lance Taylor <iant@google.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: PATCH RFC: Warn about pointer wraparound with -Wstrict-overflow
Date: Tue, 08 Apr 2008 23:50:00 -0000	[thread overview]
Message-ID: <47FBFEE3.2060401@codesourcery.com> (raw)
In-Reply-To: <m3abk4rtrt.fsf@google.com>

Ian Lance Taylor wrote:

>> That does up the risk a bit, since it means we are more likely to take
>> the new code paths.  You're making optimization more aggressive, if I
>> understand correctly, in that we'll now optimize based on pointers not
>> overflowing.  I agree with Richard that in this case we should avoid
>> this for 4.2; it seems like we might break existing programs in the
>> field and it would be better to do that in 4.3.1, than on the 4.2
>> branch.
> 
> No, I am making the optimization less aggressive.

All right; I'm sorry to be dense.

I'm going to go back to plan A: ask others their opinion.  I think 
Richard is opposed to this in 4.2.  I'm mildly in favor.  Jakub, Joseph?

Thanks,

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713

  reply	other threads:[~2008-04-08 23:25 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-07 20:46 Ian Lance Taylor
2008-04-08  9:31 ` Richard Guenther
2008-04-08 15:16   ` Ian Lance Taylor
2008-04-08 16:31     ` Richard Guenther
2008-04-08 18:15       ` Ian Lance Taylor
2008-04-11 10:04         ` gsan
2008-04-14 19:34           ` Ian Lance Taylor
2008-04-08 18:59 ` Mark Mitchell
2008-04-08 19:01   ` Ian Lance Taylor
2008-04-08 19:08     ` Mark Mitchell
2008-04-08 21:00       ` Ian Lance Taylor
2008-04-08 23:50         ` Mark Mitchell [this message]
2008-04-08 19:40   ` Jakub Jelinek
2008-04-08 21:08     ` Ian Lance Taylor
2008-04-08 21:18       ` Richard Guenther
2008-04-08 22:16         ` Ian Lance Taylor
2008-04-08 20:57   ` Richard Guenther
2008-04-08 21:47   ` Paul Brook
2008-04-08 21:54     ` Andrew Pinski
2008-04-08 21:54       ` Mark Mitchell
2008-04-08 21:56         ` Richard Guenther
2008-04-08 23:48           ` Mark Mitchell
2008-04-10 18:22   ` Joseph S. Myers
2008-04-14 20:02 ` PATCH COMMITTED: " Ian Lance Taylor
2008-04-15  9:26   ` Richard Guenther
2008-04-15 14:28     ` Ian Lance Taylor
2008-04-15 17:49     ` Ian Lance Taylor
2008-04-17  6:24     ` Ian Lance Taylor
2008-04-18 16:22       ` Ian Lance Taylor

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