ustas - Misleading gap size

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ustas

low

Misleading gap size

Summary

The gap size in the comments and the actual code are different; the size is incorrect in both variants.

Vulnerability Detail

According to the documentation, the gap's size should equal 44 because there are 6 used storage slots in the contract.

Impact

This is misleading and could impact future upgrades.

Code Snippet

https://github.com/sherlock-audit/2023-01-optimism/blob/main/optimism/packages/contracts-bedrock/contracts/universal/CrossDomainMessenger.sol#L132-L137
https://github.com/sherlock-audit/2023-01-optimism/blob/main/optimism/packages/contracts-bedrock/.storage-layout#L9-L45

Tool used

Manual Review, VSCodium

Recommendation

Change the size to 44.

Duplicate of #146