Re: [Qemu-devel] [PATCH for-2.10???] fix build failure in nbd_read_reply_entry()

[Eric Blake]

On 08/17/2017 11:14 AM, Igor Mammedov wrote:
> travis builds fail at HEAD at rc3 master with
> 
>   block/nbd-client.c: In function ‘nbd_read_reply_entry’:
>   block/nbd-client.c:110:8: error: ‘ret’ may be used uninitialized in this 
> function [-Werror=uninitialized]
> 
> fix it by initializing 'ret' to 0
> 
> Signed-off-by: Igor Mammedov <address@hidden>
> ---
>  block/nbd-client.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Eric Blake <address@hidden>

I concur that it is a false positive, introduced by commit 72b6ffc7; and
that it should not affect tarball builds where we do not default to
turning on -Werror (other than an annoying warning). This feels to me to
be in the same category as a couple other patches we have already
identified, where it doesn't deserve spinning up -rc4 by itself, but if
we do have a major bug to fix, then including this one at the same time
is fine.

I'll defer to Peter's judgment on whether to apply it for 2.10;
meanwhile, I'll stick it on my NBD tree for 2.11 if it does not get
applied for 2.10.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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