struct Bar {
	field[2] c
	bool d
}

struct Foo {
	Bar a
	bool b
}

def main() -> (Foo):
	Foo[2] f = [Foo { a: Bar { c: [0, 0], d: false }, b: true}, Foo { a: Bar {c: [0, 0], d: false}, b: true}]
	f[0].a.c = [42, 43]
	return f[0]