solidity/test/libsolidity/semanticTests/reverts/invalid_enum_as_external_arg.sol

contract C {
    enum X {A, B}

    function tested(X x) public returns (uint256) {
        return 1;
    }

    function test() public returns (uint256) {
        X garbled;

        assembly {
            garbled := 5
        }

        return this.tested(garbled);
    }
}

// ----
// test() -> FAILURE # should throw #