Description

In types.rs, Rust bindings for the SP1Helios contract are defined using the sol! macro, allowing the contract's functions to be used at the Rust code level. These bindings conveniently include view functions such as getSyncCommitteePeriod, getCurrentSlot, and getCurrentEpoch in addition to the update function. However, the current SP1Helios contract does not include a getCurrentSlot() function; instead, it defines a getStorageSlot(uint256 blockNumber, address contractAddress, bytes32 key) function.

#[allow(missing_docs)]
#[sol(rpc)]
contract SP1Helios {
    [...]
    function getSyncCommitteePeriod(uint256 slot) internal view returns (uint256);
    function getCurrentSlot() internal view returns (uint256);
    function getCurrentEpoch() internal view returns (uint256);
}

Impact

In the project's Rust-level code, attempting to call the getCurrentSlot function, which does not exist in the SP1Helios contract, may result in an error. Additionally, the getStorageSlot function cannot be used because its interface is not defined.

However, this view function is currently not used anywhere within the project.

Recommendations

Update the Rust bindings for SP1Helios defined in types.rs to match the latest version of the contract.

Remediation