Unnecessary ABIEncoderV2 Pragma [Outdated Code]
Summary
The contract uses the deprecated pragma abicoder v2 directive which is unnecessary in recent Solidity versions.
Vulnerability Details
PerpetualVault, VaultReader:
Since Solidity 0.8.0, ABIEncoderV2 is enabled by default and the pragma is no longer needed.
Impact
Unnecessary code
Potential confusion for developers
Slightly increased deployment gas cost
Recommendations
Remove the unnecessary pragma:
// PerpetualVault.sol, VaultReader.sol
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