Re: [PATCH] block: fix build waring

[Eric Blake]

On Sun, Jun 13, 2021 at 05:38:21PM +0800, Zhiwei Jiang wrote:

In the subject, s/waring/warning/

> when i compile this file with some error message
> ../block.c: In function ‘bdrv_replace_node_common’:
> ../block.c:4903:9: error: ‘to_cow_parent’ may be used
> uninitialized in this function [-Werror=maybe-uninitialized]
>          bdrv_remove_filter_or_cow_child(to_cow_parent, tran);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> 
> Signed-off-by: Zhiwei Jiang <elish.jiang@ucloud.cn>
> ---
>  block.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

This looks identical to
https://lists.gnu.org/archive/html/qemu-devel/2021-05/msg01229.html
which has a more complete commit message and is already on Kevin's
tree for an upcoming pull request.

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