RB_INITIALIZER
RB_INITIALIZER(&x509_issuer_cache);
static struct idname_tree user_idname = RB_INITIALIZER(&user_idname);
static struct idname_tree group_idname = RB_INITIALIZER(&group_idname);
static struct uuid_urbtree uuid_urbroot = RB_INITIALIZER(uuid_urbroot);
static struct uuid_nrbtree uuid_nrbroot = RB_INITIALIZER(uuid_nrbroot);
static struct h2span_cluster_tree cluster_tree = RB_INITIALIZER(cluster_tree);
RB_INITIALIZER(&CollectTree);
RB_INITIALIZER(&sim_dedup_tree);
RB_INITIALIZER(&dedup_tree);
RB_INITIALIZER(&ZoneTree);
struct dev_ops_rb_tree dev_ops_rbhead = RB_INITIALIZER(dev_ops_rbhead);
struct mount_rb_tree mounttree = RB_INITIALIZER(dev_tree_mounttree);
static struct symdata_rbtree symroot = RB_INITIALIZER(symroot);