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Message-ID: <1541470.svcjxmq1Ff@main.pennware.com>
Date: Mon, 28 May 2012 08:13:48 -0500
From: Richard Pennington <rich@...nware.com>
To: musl@...ts.openwall.com
Subject: Re: Possible ARM struct stat problem.
On Sunday, May 27, 2012 03:43:19 PM Rich Felker wrote:
> On Sun, May 27, 2012 at 01:35:07PM -0500, Richard Pennington wrote:
> > Hi,
> >
> > I think a found a problem with the struct stat definition for the ARM. It
> > needed a bit more padding. I've attached a diff and wrote about it on my
> > blog if you'd like more information.
> >
> > http://ellcc.org/blog/?p=121
>
> This looks like a clang bug. Per the ABI, long long has 8-byte
> alignment on ARM. Thus, the structure definition musl has right now
> will give the right layout to match the ABI, and in fact it works
> perfectly when compiled with GCC.
>
> I'm not entirely opposed to putting the explicit padding in there,
> since this is an arch-specific structure anyway, but I think you
> should check your compiler. The same issue might come up elsewhere and
> might not be so easy to work around.
>
> Let me know what you find.
>
> Rich
You were right, there is a problem with my compiler's ABI handling. I've
patched it and have removed the padding. Thanks.
-Rich
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