ok1(tdb_check(tdb, NULL, NULL) == 0);
/* Figure out which bucket free entry is. */
b_off = bucket_off(zone_off, size_to_bucket(zone_bits, 1024));
/* Lock and fail to coalesce. */
ok1(tdb_lock_free_bucket(tdb, b_off, TDB_LOCK_WAIT) == 0);
ok1(tdb_check(tdb, NULL, NULL) == 0);
/* Figure out which bucket free entry is. */
b_off = bucket_off(zone_off, size_to_bucket(zone_bits, 1024));
/* Lock and fail to coalesce. */
ok1(tdb_lock_free_bucket(tdb, b_off, TDB_LOCK_WAIT) == 0);