Re: [RFC 2/3] refspec: make sure stack refspec_item variables are zeroed

> From: Jacob Keller <jacob.keller@gmail.com>
>
> A couple of functions that used struct refspec_item did not zero out the
> structure memory. This can result in unexpected behavior, especially if
> additional parameters are ever added to refspec_item in the future. Use
> memset to ensure that unset structure members are zero.
>
> It may make sense to convert most of these uses of struct refspec_item
> to use either struct initializers or refspec_item_init_or_die. However,
> other similar code uses memset. Converting all of these uses has been
> left as a future exercise.
>
> Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
> ---
>  builtin/remote.c | 1 +
>  transport.c      | 1 +
>  2 files changed, 2 insertions(+)
>
> diff --git a/builtin/remote.c b/builtin/remote.c
> index c8240e9fcd58..542f56e3878b 100644
> --- a/builtin/remote.c
> +++ b/builtin/remote.c
> @@ -478,6 +478,7 @@ static int get_head_names(const struct ref *remote_refs, struct ref_states *stat
>  	struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
>  	struct refspec_item refspec;
>  
> +	memset(&refspec, 0, sizeof(refspec));
>  	refspec.force = 0;
>  	refspec.pattern = 1;
>  	refspec.src = refspec.dst = "refs/heads/*";

> diff --git a/transport.c b/transport.c
> index 2d4fd851dc0f..419be0b6ea4b 100644
> --- a/transport.c
> +++ b/transport.c
> @@ -443,6 +443,7 @@ void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int v
>  	if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
>  		return;
>  
> +	memset(&rs, 0, sizeof(rs));
>  	rs.src = ref->name;
>  	rs.dst = NULL;