solidity/test/libsolidity/syntaxTests/conversion/not_allowed_conversion_from_super.sol

contract S
{
	int o;
	function foo() public returns (int) { return o = 3; }
}

contract B is S
{
	function fii() public
	{
		o = S(super).foo();
	}
}
// ----
// TypeError 9640: (129-137): Explicit type conversion not allowed from "type(contract super B)" to "contract S".