Copy Constructor

[Alain De Vos]

I don't know the answer. But some questions come to my mind.
Does Foo(3) lives on the stack or the heap ?
There is also no assignment from Foo to Foo for Foo(3), there is 
a conversion.
And what happes with
Foo[3] arr = [one, two, Foo(3)];
Foo[]  arr=   [one, two, Foo(3)];
and
Foo x=Foo(3).dup()