[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] util/iov: Fix -O1 uninitialized variable warnin
|
From: |
Peter Maydell |
|
Subject: |
Re: [Qemu-devel] [PATCH] util/iov: Fix -O1 uninitialized variable warning |
|
Date: |
Thu, 18 Jul 2013 17:36:20 +0100 |
On 18 July 2013 17:14, Richard Henderson <address@hidden> wrote:
> At -O2, code in the form
>
> if (p) A; B; if (p) C;
>
> may be rearranged via "jump threading" into
>
> if (p) { A; B; C; } else { B; }
>
> But at -O1 this doesn't happen and we -Werror out here on
> the "may be used uninitialized" orig_len. Perform this transform
> by hand so that -O1 remains a viable debugging alternative.
>
> Signed-off-by: Richard Henderson <address@hidden>
This is the same issue fixed by this (reviewed but
never applied) patch from June, isn't it?
http://patchwork.ozlabs.org/patch/251410/
thanks
-- PMM