forall( T & )
struct Proxy {};

struct MonoCell {
	Proxy(int) data;
};

forall( T & )
struct PolyCell {
	Proxy(T) data;
};

int main() {
	{
		MonoCell thing1;
		Proxy(int) & thing2 = thing1.data;
	}

	{
		PolyCell(int) thing1;
		Proxy(int) & thing2 = thing1.data;
	}

	printf("Done\n");
}