Add precautionary cast to long in length calculation

hyperledger-web3j · Aug 13, 2020 · 7e11912 · 7e11912
1 parent cfca39c
commit 7e11912
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/rlp/src/main/java/org/web3j/rlp/RlpDecoder.java b/rlp/src/main/java/org/web3j/rlp/RlpDecoder.java
@@ -188,7 +188,7 @@ private static int calcLength(int lengthOfLength, byte[] data, int pos) {
         byte pow = (byte) (lengthOfLength - 1);
         long length = 0;
         for (int i = 1; i <= lengthOfLength; ++i) {
-            length += (data[pos + i] & 0xff) << (8 * pow);
+            length += ((long) (data[pos + i] & 0xff)) << (8 * pow);
             pow--;
         }
         if (length < 0 || length > Integer.MAX_VALUE) {