reset memory in memStore when value length < value offset

ethereumjs · Oct 12, 2017 · fbb445d · fbb445d
1 parent 9ffa74c
commit fbb445d
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/lib/opFns.js b/lib/opFns.js
@@ -956,6 +956,11 @@ function memStore (runState, offset, val, valOffset, length, skipSubMem) {
   offset = offset.toNumber()
   length = length.toNumber()
 
+  if (valOffset.gtn(val.length)) {
+    runState.memory = []
+    return
+  }
+
   var safeLen = null
   if (valOffset.addn(length).gtn(val.length)) {
     if (valOffset.gte(new BN(val.length))) {