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Protect transferFrom against short hand attack.

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Mikko Ohtamaa
2017-05-18 00:38:41 +03:00
parent e1cf602487
commit 964185dec3
1 changed files with 1 additions and 1 deletions
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contracts/token/StandardToken.sol
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@ -16,7 +16,7 @@ contract StandardToken is BasicToken, ERC20 {
mapping (address => mapping (address => uint)) allowed;
function transferFrom(address _from, address _to, uint _value) {
function transferFrom(address _from, address _to, uint _value) onlyPayloadSize(3 * 32) {
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met