diff options
Diffstat (limited to 'packages/contracts/contracts/base/ERC20Token.sol')
| -rw-r--r-- | packages/contracts/contracts/base/ERC20Token.sol | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/packages/contracts/contracts/base/ERC20Token.sol b/packages/contracts/contracts/base/ERC20Token.sol index 765cd7274..f0117894d 100644 --- a/packages/contracts/contracts/base/ERC20Token.sol +++ b/packages/contracts/contracts/base/ERC20Token.sol @@ -20,7 +20,8 @@ contract ERC20Token is Token { /// @param _value Amount to transfer. /// @return Success of transfer. function transferFrom(address _from, address _to, uint _value) returns (bool) { - require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]); + uint allowance = allowed[_from][msg.sender]; + require(balances[_from] >= _value && allowance >= _value && balances[_to] + _value >= balances[_to]); balances[_to] += _value; balances[_from] -= _value; if (allowance < MAX_UINT) { |