Submission Details
Severity:
Stack variable cost less while used in emiting event
Summary
Stack variable cost less while used in emiting event
Vulnerability Details
Even if the variable is going to be used only one time, caching a state variable and use its cache in an emit would help you reduce the cost by at least 9 gas
File: /src/Escrow.sol
// @audit `i_seller` is a state variable
96: emit Confirmed(i_seller);
// @audit `i_buyer` is a state variable
117: emit Resolved(i_buyer, i_seller);
// @audit `i_seller` is a state variable
117: emit Resolved(i_buyer, i_seller);
Impact
Save gas
Tools Used
Manual
Recommendations
cache state variable
Prize pool breakdown
Total prize
40,000 USDC
nSLOC
186215 USDC / LOC
37,000 USDC
3,000 USDC
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