template instance cannot use local 'f' as parameter to non-global template

[Trass3r]

> I've seen this error before...
>
> *searches memory and old code*
>
> Here you go: http://d.puremagic.com/issues/show_bug.cgi?id=3051

I think this is yet another issue.
The inner template argument is not something on the stack but it is a  
template argument.