cerc-io/solidity
16
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Check for overflow

Browse Source
This commit is contained in:
Denton Liu 2016-08-24 15:06:54 -04:00
parent 876b39e8e5
commit 56558c0db2
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
std/StandardToken.sol
View File

@ -12,7 +12,7 @@ contract StandardToken is Token {
} }
function transfer(address _to, uint256 _value) returns (bool success) { function transfer(address _to, uint256 _value) returns (bool success) {
if (balanceOf[msg.sender] >= _value) { if (balanceOf[msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]) {
balanceOf[msg.sender] -= _value; balanceOf[msg.sender] -= _value;
balanceOf[_to] += _value; balanceOf[_to] += _value;
Transfer(msg.sender, _to, _value); Transfer(msg.sender, _to, _value);
@ -24,7 +24,7 @@ contract StandardToken is Token {
} }
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
if (allowance[_from][msg.sender] >= _value) { if (allowance[_from][msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]) {
allowance[_from][msg.sender] -= _value; allowance[_from][msg.sender] -= _value;
balanceOf[_to] += _value; balanceOf[_to] += _value;
Transfer(_from, _to, _value); Transfer(_from, _to, _value);