Added caching and database interface to trie

* Reimplemented caching for trie
* Reimplemented resetting and persisting trie

1 files changed, 1 insertions, 1 deletions

diff --git a/ptrie/valuenode.go b/ptrie/valuenode.go
index c226621a7..c593eb6c6 100644
--- a/ptrie/valuenode.go
+++ b/ptrie/valuenode.go
@@ -8,6 +8,6 @@ type ValueNode struct {
 func (self *ValueNode) Value() Node          { return self } // Best not to call :-)
 func (self *ValueNode) Val() []byte          { return self.data }
 func (self *ValueNode) Dirty() bool          { return true }
-func (self *ValueNode) Copy() Node           { return self }
+func (self *ValueNode) Copy() Node           { return &ValueNode{self.trie, self.data} }
 func (self *ValueNode) RlpData() interface{} { return self.data }
 func (self *ValueNode) Hash() interface{}    { return self.data }