From 75cb0cd738f49e73dd5ac386e67c326fa58a734e Mon Sep 17 00:00:00 2001
From: olderdev1003 <olderdev1003@gmail.com>
Date: Thu, 7 Jun 2018 22:42:19 +0800
Subject: [PATCH] make transfer func compatible to eip20 standard

As discussed in https://github.com/ethereum/solidity/issues/4116
Due to solidity compiler change after v0.4.22, this wrong transfer function will cause serious issues.
We (SECBIT.IO) found many people followed this tutorial on ethereum.org.
SHOULD fix this ASAP!
---
 solidity/token-advanced.sol | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/solidity/token-advanced.sol b/solidity/token-advanced.sol
index 080f322..036bb75 100644
--- a/solidity/token-advanced.sol
+++ b/solidity/token-advanced.sol
@@ -82,8 +82,9 @@ contract TokenERC20 {
      * @param _to The address of the recipient
      * @param _value the amount to send
      */
-    function transfer(address _to, uint256 _value) public {
+    function transfer(address _to, uint256 _value) public returns (bool success) {
         _transfer(msg.sender, _to, _value);
+        return true;
     }
 
     /**