fix uint zero minus

neo-project · Aug 12, 2020 · f18a1b3 · f18a1b3
1 parent e3de92c
commit f18a1b3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/neo/Ledger/Blockchain.State.cs b/src/neo/Ledger/Blockchain.State.cs
@@ -66,7 +66,7 @@ private VerifyResult PersistCnStateRoot(StateRoot root)
 
         private void CheckStateRootCache()
         {
-            var index = Height - 1;
+            var index = (long)Height - 1;
             if (0 <= index && state_root_cache.TryGetValue(index, out StateRoot root))
             {
                 state_root_cache.Remove(index);