#unittest {
	name: "Fragile class test.";
	error: NONE;
	result: 330;
};

class bar {
	var b1 = 100;
	var b2 = 200;
	
	func f1() {
		return b1+b2;
	}
}

class foo:bar {
	var e1 = 10;
	var e2 = 20;
	
	func f1() {
		return b1+b2+e1+e2;
	}
}

func main() {
	return foo().f1();
}