.

wcfs/δbtail.go

@@ -612,19 +612,25 @@ func (prs *rangeSplit) GetToLeaf(ctx context.Context, k Key) (rnode *nodeInRange
 
 	for {
 		switch rnode.node.(type) {
+		// bucket = leaf
 		case *Bucket:
 			return rnode, true, nil
 		}
 
-		// it's tree
-		err = rnode.node.PActivate(ctx)
+		// its tree -> activate to expand; check for ø case
+		tree := rnode.node.(*Tree)
+		err = tree.PActivate(ctx)
 		if err != nil {
 			return nil, false, err
 		}
-		defer rnode.node.PDeactivate()
+		defer tree.PDeactivate()
 
-		// FIXME ø tree -> don't expand -> tree
+		// empty tree -> don't expand - it is already leaf
+		if len(tree.Entryv()) == 0{
+			return rnode, true, nil
+		}
 
+		// expand tree children
 		children := prs.Expand(rnode)
 		rnode = children.Get(k) // k must be there
 	}