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]