UMEM_REDZONE_PATTERN
buftagp->bt_redzone != UMEM_REDZONE_PATTERN) {
if (buftagp->bt_redzone == UMEM_REDZONE_PATTERN)
btp->bt_redzone = UMEM_REDZONE_PATTERN;
btp->bt_redzone = UMEM_REDZONE_PATTERN;
if (btp->bt_redzone != UMEM_REDZONE_PATTERN) {
btp->bt_redzone = UMEM_REDZONE_PATTERN;