Re: [PATCH v2 5/5] ref-filter: get_ref_atom_value() error handling

> These are "real" errors and yield several more changes in the remainder.
> Ignoring those BUG-type messages at the beginning of this patch would
> give a patch like the one below.
>
> +static int get_object(struct ref_array_item *ref, const struct object_id *oid,
> +                      int deref, struct object **obj, struct strbuf *err)
>  {
>         void *buf = get_obj(oid, obj, &size, &eaten);
> -       if (!buf)
> -               die(_("missing object %s for %s"),
> -                   oid_to_hex(oid), ref->refname);
> -       if (!*obj)
> -               die(_("parse_object_buffer failed on %s for %s"),
> -                   oid_to_hex(oid), ref->refname);
> -
> +       if (!buf) {
> +               strbuf_addf(err, _("missing object %s for %s"), oid_to_hex(oid),
> +                           ref->refname);
> +               return -1;
> +       }
> +       if (!*obj) {
> +               strbuf_addf(err, _("parse_object_buffer failed on %s for %s"),
> +                           oid_to_hex(oid), ref->refname);
> +               return -1;

> +       }
>         grab_values(ref->value, deref, *obj, buf, size);
>         if (!eaten)
>                 free(buf);
> +       return 0;
>  }