auto limitation?

[Namespace]

> Here is a reduced code:
>
> import std.stdio;
>
> enum Type { Int, Float }
>
> auto foo(Type t)
> {
>     final switch (t) {
>     case Type.Int:
>         return 42;
>     case Type.Float:
>         return 1.5;
>     }
> }
>
> void main()
> {
>     writeln(foo(Type.Int));
>     writeln(foo(Type.Float));
> }
>
> The return type of foo() is double. (It's float in your code 
> but it doesn't matter.)
>
> I think this is a bug. I guess that 'return 42' is still 
> placing an int onto the program stack instead of a float. A 
> workarounds are returning to!float(this._num.ivalue).
>
> But I think this is a compiler bug.
>
> Ali

I should begin to count the bugs I find with stuff like this. :)
So no correct workaround, hm?

I tried to use a Variant and in the getter method "get" and even 
"coerce" but then i get the error, that the type of "get" cannot 
be detected.