hashsize <<= 1;
res = nmem_malloc(nmem, sizeof(struct reclist));
res->hashtable = nmem_malloc(nmem, hashsize * sizeof(struct reclist_bucket*));
hashsize <<= 1;
res = nmem_malloc(nmem, sizeof(struct reclist));
res->hashtable = nmem_malloc(nmem, hashsize * sizeof(struct reclist_bucket*));