Re: [boost] Help with nested template friend classes

From: Scott Woods (scottw_at_[hidden])
Date: 2003-10-05 17:05:27

Does the following make your compiler happy (does for VC6)

> Compiling the following code...
>
>   template <typename T>
>   class outer
>   {
>   public:
>     template <typename U> class inner { };
>     template <typename U> friend class inner;
>   private:
>     // ...
>   };
>

change friend declaration to...

 friend class inner<typename>;

>   int main()
>   {
>     typedef outer<int>::inner<double> test;
>   }
>
> ...I get the following error with Comeau:
>
>   error: template nesting depth does not match the previous
>           declaration of class template "outer<T>::inner [with T=int]"
>     template <typename U> friend class inner;
>
> In case it's not evident, the goal is for outer<T>::inner<U> to have
access
> to private members of outer<T>.
>
>
>
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