Re: Stack overflow

[Namespace]

This might work:

this(U)(U obj)
    if(is(U : T) && !is(U == typeof(null)))
{
}

- Jonathan M Davis

Interesting. With or wihtout that, if i add a method to Foo it 
prints "Stack overflow" also.

http://dpaste.dzfl.pl/91dad66c

Can you explain that?