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From: Andreas Enge <andreas@enge.fr>
To: Leo Famulari <leo@famulari.name>
Cc: guix-devel@gnu.org
Subject: Re: libgd security update / i686 issues
Date: Thu, 28 Jul 2016 10:34:20 +0200	[thread overview]
Message-ID: <20160728083420.GA1693@solar> (raw)
In-Reply-To: <20160728072337.GA1011@jasmine>

On Thu, Jul 28, 2016 at 03:23:37AM -0400, Leo Famulari wrote:
> Should these CFLAGS values be applied unconditionally, as in the
> attached patch, or should they be applied only while building on or for
> specific architectures? Or something else?

They only work on x86 processors, almost by definition: SSE stands for
a certain instruction set. So one would need to check whether the problem
occurs for other architectures. I would assume that it happens on all 32
bit architectures, in particular armhf. Their code is too fragile: One
should not rely on fine details of the processor architecture or instruction
set to hope for an expected rounding behaviour.

Andreas

  reply	other threads:[~2016-07-28  8:34 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-28  7:23 libgd security update / i686 issues Leo Famulari
2016-07-28  8:34 ` Andreas Enge [this message]
2016-07-28  8:40 ` Andreas Enge
2016-07-28 16:30   ` Leo Famulari
2016-07-28 17:22     ` Mark H Weaver
2016-07-28 18:38       ` Leo Famulari
2016-07-28 18:56       ` Leo Famulari
2016-07-28 20:47         ` Leo Famulari
2016-07-29 17:59         ` Mark H Weaver
2016-07-29 18:52           ` Leo Famulari
2016-07-29 20:33           ` Mark H Weaver
2016-07-28 21:26 ` Leo Famulari
2016-07-29 15:00   ` Ludovic Courtès
2016-07-29 15:42     ` Leo Famulari

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