group_has_spare
.group_type = group_has_spare,
return group_has_spare;
sds->local_stat.group_type != group_has_spare))
case group_has_spare:
case group_has_spare:
case group_has_spare:
if (local->group_type == group_has_spare) {
if (sds.prefer_sibling && local->group_type == group_has_spare &&