Submission Details
Severity:
Use assembly to check for `address(0)`
Summary
Gas can be saved by using assembly to check for address(0)
Vulnerability Details
Saves around 60 gas per this link
103 if (s_priceFeeds[token] == address(0)) {
https://github.com/Cyfrin/2023-07-foundry-defi-stablecoin/blob/main/src/DSCEngine.sol#L103
58 if (_to == address(0)) {
Impact
Gas savings can be achieved
Tools Used
Manual review
Recommendations
Use assembly for these checks to save gas
Prize pool breakdown
Total prize
15,000 USDC
nSLOC
23664 USDC / LOC
14,000 USDC
1,000 USDC
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