SFF_CACHE_ENABLED
ISSET(sc->sc_sf->flags, SFF_CACHE_ENABLED) ? "" :
ISSET(sc->sc_sf->flags, SFF_CACHE_ENABLED) ? "" :
SET(sf->flags, SFF_CACHE_ENABLED);
if (!ISSET(sf->flags, SFF_CACHE_ENABLED))
SET(sf->flags, SFF_CACHE_ENABLED);