From b9257a10927b98108ad4c984bc70104b56c2995f Mon Sep 17 00:00:00 2001 From: Jorge Izquierdo Date: Mon, 27 Feb 2017 16:32:42 +0100 Subject: [PATCH] Add clarifying comment to standard token transfer from function --- contracts/token/StandardToken.sol | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/contracts/token/StandardToken.sol b/contracts/token/StandardToken.sol index b457808ee..de5aa4adb 100644 --- a/contracts/token/StandardToken.sol +++ b/contracts/token/StandardToken.sol @@ -26,7 +26,10 @@ contract StandardToken is ERC20, SafeMath { function transferFrom(address _from, address _to, uint _value) returns (bool success) { var _allowance = allowed[_from][msg.sender]; - + + // Check is not needed because safeSub(_allowance, _value) will already throw if this condition is not met + // if (_value > _allowance) throw; + balances[_to] = safeAdd(balances[_to], _value); balances[_from] = safeSub(balances[_from], _value); allowed[_from][msg.sender] = safeSub(_allowance, _value);