Submission Details
Severity:
Increment loop using unchecked block
Summary
Reduce 426 units of gas in execution cost by incrementing loop with a unchecked block in DSCEngine::getAccountCollateralValue. There's no possibility of overflow in this loop.
function getAccountCollateralValue(address user) public view returns (uint256 totalCollateralValueInUsd) {
// loop through each collateral token, get the amount they have deposited, and map it to
// the price, to get the USD value
for (uint256 i = 0; i < s_collateralTokens.length;) {
address token = s_collateralTokens[i];
uint256 amount = s_collateralDeposited[user][token];
totalCollateralValueInUsd += getUsdValue(token, amount);
unchecked {
i++;
}
}
return totalCollateralValueInUsd;
}
Tools Used
VS Code and Foundry
Prize pool breakdown
Total prize
15,000 USDC
nSLOC
23664 USDC / LOC
14,000 USDC
1,000 USDC
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