[Libguestfs] [nbdkit PATCH 1/2] common/utils: document empty_vector compound literal assignment

[Eric Blake]

On Tue, Mar 28, 2023 at 06:25:13PM +0200, Laszlo Ersek wrote:
> We usually zero-initialize vectors like
> 
>   string_vector names = empty_vector;
> 
> Allocating and zeroing separately is frequently useful however. Document
> the pattern
> 
>   string_vector names;
>   names = (string_vector)empty_vector;
> 
> where "(string_vector)empty_vector" is a compound literal.
> 
> Link: http://mid.mail-archive.com/20230221183810.vjilfbmj3woqivlj@redhat.com
> Suggested-by: Eric Blake <eblake at redhat.com>
> Signed-off-by: Laszlo Ersek <lersek at redhat.com>
> ---
>

Reviewed-by: Eric Blake <eblake at redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
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