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Date: Wed, 11 Mar 2015 08:02:00 -0400
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: Does musl build error with gcc-4.9.2+ git repo resolved
On Wed, Mar 11, 2015 at 09:52:35AM +0530, vlse wrote:
> I want to know whether the gcc 4.9.x bug bugzilla id 61144 resolved
> with latest git/svn branch of gcc-4.9.x.
>
> That bugzilla page says bug 61144 has been resolved. Anybody has
> confirmed it? Has musl changed it's build scripts to account that?
I haven't done detailed tests to confirm, but I believe the bug is
fixed in 4.9.2. However there's another very serious bug that affects
4.9.2 and possibly all 4.9.x releases causing incorrect code gen:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65307
On the musl side, we worked aroung bug 61144 with gratuitous use of
volatile before 4.9.2 was released. This workaround might be reverted
at some point in the future if the affected versions are deemed too
buggy for any distros to keep them around.
Rich
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