From: "H. Peter Anvin" <hpa@zytor.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David Miller <davem@davemloft.net>,
xiyou.wangcong@gmail.com, goodmenkernel@gmail.com,
linux-kernel@vger.kernel.org
Subject: Re: Is there any word about this bug in gcc ?
Date: Mon, 19 Nov 2007 22:47:59 -0800 [thread overview]
Message-ID: <4742831F.9040408@zytor.com> (raw)
In-Reply-To: <E1IuMnZ-0003o3-00@gondolin.me.apana.org.au>
Herbert Xu wrote:
> David Miller <davem@davemloft.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
next prev parent reply other threads:[~2007-11-20 6:49 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-20 2:13 Is there any word about this bug in gcc ? zhengyi
2007-11-20 4:16 ` WANG Cong
2007-11-20 5:10 ` H. Peter Anvin
2007-11-20 5:39 ` WANG Cong
2007-11-20 6:03 ` Li Zefan
2007-11-20 6:10 ` WANG Cong
2007-11-20 6:04 ` H. Peter Anvin
2007-11-20 6:17 ` David Miller
2007-11-20 6:41 ` Herbert Xu
2007-11-20 6:47 ` H. Peter Anvin [this message]
2007-11-20 6:52 ` Herbert Xu
2007-11-20 12:52 ` Alessandro Suardi
2007-11-20 18:42 ` Sami Farin
2007-11-20 21:10 ` Nix
2007-11-21 13:16 ` Alexander E. Patrakov
2007-11-21 16:19 ` Alexander E. Patrakov
2007-11-21 17:22 ` Lennart Sorensen
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