SWSLOT_BAD
if (anon->an_swslot != 0 && anon->an_swslot != SWSLOT_BAD) {
SWSLOT_BAD);
anon->an_swslot = SWSLOT_BAD;
if (startslot == SWSLOT_BAD) {
if (swslot == SWSLOT_BAD) {