Address problem

[Gheorghe Gabriel via Digitalmars-d-learn]

Hi,
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interface I { }

I[string] i;

class C : I {
    this() {
        i["s"] = this;
        foreach (_i; i) {
            writeln(&_i);
        }
        foreach (ref _i; i) {
            writeln(&_i);
        }
    }
}

void main() {
    C c = new C;
    writeln(&c);
}
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output:
19FDD8
2802028
21FE58
---------------------------------------------------
I need that I["s"] to have the same address like c.