# Some contracts don't implement their entire interface Low/Info · Three Sigma · Stablecoin framework · 8th January, 2024 Finding 3S-M^0-N02 of the M^0 Minter Gateway security review. - Protocol: https://www.m0.org/ - Report: /reports/m-0 - Codebase: https://github.com/0xsimao/ttg/tree/a8127901fa1f24a2e821cf4d9854a1aa6ac8088c - Source: https://cdn.sanity.io/files/qoqld077/production/1cdafafad874aba76e062ad8c216c98338c096db.pdf --- ### Description There are some contracts that don't fully implement the interface with the same name. For example, [IERC5805](https://github.com/MZero-Labs/ttg/blob/a8127901fa1f24a2e821cf4d9854a1aa6ac8088c/src/abstract/interfaces/IERC5805.sol) defines functions such as delegates, getPastVotes and getVotes. These functions are not implemented in ERC5805, only in EpochBasedVoteToken. ### Recommendation Implement all interface functions in the contract with the same name, even if said implementation remains empty and virtual. ### Status Acknowledged --- Related findings: - [_crossTransfer(...) reverts for smart contracts that don't share the same address on different chains](https://0xsimao.com/findings/fuji-finance-cross-transfer-reverts-share): Fuji Finance - [Contracts should inherit their interfaces](https://0xsimao.com/findings/nftperp-i-contracts-inherit-their-interfaces): Nftperp Exchange