/* should parse & type check. */

type T
{
    int x;
    int y;
    int get_x();
}

class BaseCls() : T impl T
{
    init int x;
    init int y;
    int get_x() { x; }
    export T : x, y, get_x;
}

mixin mx() : T at T impl T with int x
{
    init int z;
    super(x = 3);
    export T : z as x, y as y, get_x as get_x;
}

subclass DerivedCls = mx(BaseCls);

int main() {
    T t = new DerivedCls : T (y = 4, z = 5);

    t.get_x() + t.x + t.y;   // should evaluate to 12
}