Exercise 1: Function Overridden Protection
The goal is to create a script that performs a feature that was not present in previous version of Solidity: function overriding protection.
exercises/exercise1/coin.sol contains a function that must never be overridden:
_mint(address dst, uint256 val)
Use Slither to ensure that no contract inheriting Coin overrides this function.
Use solc-select install 0.5.0 && solc-select use 0.5.0 to switch to solc 0.5.0
Proposed Algorithm
Get the Coin contract
For each contract in the project:
If Coin is in the list of inherited contracts:
Get the _mint function
If the contract declaring the _mint function is not Coin:
A bug is found.
Tips
- To get a specific contract, use
slither.get_contract_from_name(note: it returns a list) - To get a specific function, use
contract.get_function_from_signature