Incorrect erc20 interface, a contract compiled with Solidity > 0.4.22 interacting with these functions will fail to execute them, as the return value is missing.

• Description:

  • Incorrect return values for ERC20 functions. A contract compiled with Solidity > 0.4.22 interacting with these functions will fail to execute them, as the return value is missing.

    • Instances of incorrect interfaces

      • ILoveToken

      • ISoulmate

• Impact:

  • Token.transfer does not return a boolean. Bob deploys the token. Alice creates a contract that interacts with it but assumes a correct ERC20 interface implementation. Alice's contract is unable to interact with Bob's contract.

• Proof of Code:

  • See Slither documentation

• Recommendation:

  • Set the appropriate return values and types for the defined ERC20 functions.