Root + Impact

Description

The faucetClaimer state variable is declared as public, which instructs the Solidity compiler to generate a getter function faucetClaimer() that returns its value without arguments. The explicit getClaimer() function performs the identical operation (return faucetClaimer;), making it redundant. This duplication adds unnecessary bytecode to the contract, slightly increasing deployment costs and complicating code review, as developers may question the purpose of the explicit function.

While harmless in isolation, such redundancies can accumulate in larger contracts, contributing to higher gas usage and potential confusion during maintenance or upgrades.

Risk

Likelihood:

• Low: The redundancy does not affect runtime execution and is easily spotted in reviews.

• More likely in iterative development where explicit getters are added without removing the public modifier.

Impact:

• Low: Minimal gas overhead (negligible for deployment), but contributes to code bloat in larger contracts.

• Maintainability issues: Developers may prefer the explicit function, overlooking the automatic one, leading to inconsistent usage.

Proof of Concept

The following Foundry test demonstrates equivalence: Both the automatic faucetClaimer() and explicit getClaimer() return the same value after a claim, confirming redundancy.

Add the following to the RaiseBoxFaucetTest.t.sol test:

Explanation

• Setup: Calls claimFaucetTokens to set faucetClaimer to user1.

• Issue Demonstration: Both getters return user1, proving getClaimer adds no value.

• Result: The test passes, confirming the functions are identical, highlighting the redundancy in code size and maintenance.

• The output logs matching values, illustrating the unnecessary duplication.

Recommended Mitigation

Remove the explicit getClaimer function, relying on the automatic getter generated by the public modifier. This eliminates redundancy without changing behavior.

To access the value, use faucetClaimer() directly. If a custom name or additional logic is needed, make faucetClaimer private and keep the explicit getter.