Classes new'd inside for loop are all the same instance?

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On Thursday, 8 September 2016 at 12:24:48 UTC, lobo wrote:
> I am confused, which is normal, but I'd appreciate some help :-)
>
> If I create N classes in a for loop they are all the same 
> instance. I would expect each to be a unique instance of the 
> class. See the code below
>
> ---
>
> class C {}
> void main() {
>     import std.stdio;
>
>     auto c1 = new C();
>     writefln("c1:%s", &c1); // OK, instance c1 is unique
>
>     auto c2 = new C(); // OK, instance c2 is unqiue
>     writefln("c2:%s", &c2);
>
>     foreach(a; 0..10) {
>
>         C c = new C(); // All instances are the same object 
> with the same address?
>         writefln("c:%s", &c);
>
>     }
> }
> ---
>
> This isn't what I expected. What could I be doing wrong?
>
> Thanks,
> lobo

I don't have time to explain at the moment, but change the `&c` 
to `cast(void*)c` and you will see what you expect. I will post 
an explanation soon.