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Re: [PATCH] migration/block-dirty-bitmap: fix uninitialized variable war


From: Li Qiang
Subject: Re: [PATCH] migration/block-dirty-bitmap: fix uninitialized variable warning
Date: Sun, 11 Oct 2020 09:55:57 +0800

Chen Qun <kuhn.chenqun@huawei.com> 于2020年10月10日周六 下午7:08写道:
>
> This if statement judgment is redundant and it will cause a warning:
>
> migration/block-dirty-bitmap.c:1090:13: warning: ‘bitmap_name’ may be used
>  uninitialized in this function [-Wmaybe-uninitialized]
>              g_strlcpy(s->bitmap_name, bitmap_name, sizeof(s->bitmap_name));
>              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Reported-by: Euler Robot <euler.robot@huawei.com>
> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>

Reviewed-by: Li Qiang <liq3ea@gmail.com>

> ---
>  migration/block-dirty-bitmap.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
> index 5bef793ac0..e09ea4f22b 100644
> --- a/migration/block-dirty-bitmap.c
> +++ b/migration/block-dirty-bitmap.c
> @@ -1084,9 +1084,7 @@ static int dirty_bitmap_load_header(QEMUFile *f, 
> DBMLoadState *s,
>              } else {
>                  bitmap_name = s->bitmap_alias;
>              }
> -        }
>
> -        if (!s->cancelled) {
>              g_strlcpy(s->bitmap_name, bitmap_name, sizeof(s->bitmap_name));
>              s->bitmap = bdrv_find_dirty_bitmap(s->bs, s->bitmap_name);
>
> --
> 2.23.0
>
>



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