Mark a FIXME for some cases this code mishandles. (I'll fix it shortly.)

src/SHAMap.cpp

@@ -46,6 +46,13 @@ SHAMap::SHAMap(uint32 seq) : mSeq(seq), mState(Modifying)
 	mTNByID[*root] = root;
 }
 
+SHAMap::SHAMap(const uint256& hash) : mSeq(0), mState(Synching)
+{ // FIXME: Need to acquire root node
+	root = boost::make_shared<SHAMapTreeNode>(mSeq, SHAMapNode(0, uint256()));
+	root->makeInner();
+	mTNByID[*root] = root;
+}
+
 SHAMap::pointer SHAMap::snapShot(bool isMutable)
 { // Return a new SHAMap that is an immutable snapshot of this one
   // Initially nodes are shared, but CoW is forced on both ledgers

src/SHAMap.h

@@ -290,6 +290,7 @@ public:
 
 	// build new map
 	SHAMap(uint32 seq = 0);
+	SHAMap(const uint256& hash);
 
 	// Returns a new map that's a snapshot of this one. Force CoW
 	SHAMap::pointer snapShot(bool isMutable);