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Message-ID: <4742831F.9040408@zytor.com>
Date: Mon, 19 Nov 2007 22:47:59 -0800
From: "H. Peter Anvin" <hpa@...or.com>
To: Herbert Xu <herbert@...dor.apana.org.au>
CC: David Miller <davem@...emloft.net>, xiyou.wangcong@...il.com,
goodmenkernel@...il.com, linux-kernel@...r.kernel.org
Subject: Re: Is there any word about this bug in gcc ?
Herbert Xu wrote:
> David Miller <davem@...emloft.net> wrote:
>> Because the compiler knows things about the inputs and can
>> thus apply optimizations that a static implementation in glibc
>> that has to handle all forms of inputs cannot.
>
> On an unrelated note, I wonder if distros will be treating this
> with the same level of urgency as security vulnerabilities,
> especially in light of Shamir's recent note on maths errors.
>
This one is definitely messy. There is absolutely no way to know what
gcc has miscompiled. It looks to me that both gcc 4.2 and 4.3 are
affected, any others?
-hpa
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