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Check result of ERC20 transferFrom call

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Mark Spanbroek 2022-02-14 17:12:05 +01:00 committed by markspanbroek
parent 9e0d05965d
commit 2f59927b30
1 changed files with 6 additions and 1 deletions
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7
contracts/Collateral.sol
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@ -26,8 +26,13 @@ contract Collateral {
totals.balance -= amount; totals.balance -= amount;
} }
function transferFrom(address sender, uint256 amount) private {
address receiver = address(this);
require(token.transferFrom(sender, receiver, amount), "Transfer failed");
}
function deposit(uint256 amount) public invariant { function deposit(uint256 amount) public invariant {
token.transferFrom(msg.sender, address(this), amount); transferFrom(msg.sender, amount);
totals.deposited += amount; totals.deposited += amount;
add(msg.sender, amount); add(msg.sender, amount);
} }