Submission Details
Severity:
State variables can be packed into fewer storage slots
Summary
State variables can be packed into fewer storage slots
Vulnerability Details
Each slot saved can avoid an extra Gsset (20000 gas). Reads and writes (if two variables that occupy the same slot are written by the same function) will have a cheaper gas consumption.
File: contracts/SmartVaultV3.sol
/// @audit 7 slots -> 6 slots by new order:
/*
* bytes32 NATIVE (32 Bytes)
* uint256 minted (32 Bytes)
* address manager (20 Bytes)
* IEUROs EUROs (20 Bytes)
* IPriceCalculator calculator (20 Bytes)
* bool liquidated (1 Byte)
* address owner (20 Bytes)
*/
14: contract SmartVaultV3 is ISmartVault {
Github: [14]
Impact
It is using 1 extra slot which costs more GAS
Tools Used
Manual Review
Recommendations
Change the order of state variables as provided above
Updates
Lead Judging Commences
hrishibhat over 1 year ago
Submission Judgement Published Reason: Non-acceptable severity
Assigned finding tags:
informational/invalid
Prize pool breakdown
Total prize
20,000 USDC
nSLOC
60933 USDC / LOC
17,500 USDC
2,500 USDC
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