Submission Details
Severity:
Use assembly to check for `address(0)`
Summary
Use assembly to check for address(0)
Vulnerability Details
Saves around 60 gas per this link
40 if (address(tokenContract) == address(0)) revert Escrow__TokenZeroAddress();
41 if (buyer == address(0)) revert Escrow__BuyerZeroAddress();
42 if (seller == address(0)) revert Escrow__SellerZeroAddress();
103 if (i_arbiter == address(0)) revert Escrow__DisputeRequiresArbiter();
https://github.com/Cyfrin/2023-07-escrow/blob/main/src/Escrow.sol
Impact
Gas savings
Tools Used
Manual review
Recommendations
Use assembly to check for address(0)
Prize pool breakdown
Total prize
40,000 USDC
nSLOC
186215
USDC / LOC
37,000 USDC
3,000 USDC
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