http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45942
Michiel <MichieldeB at aim dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |
--- Comment #4 from Michiel <MichieldeB at aim dot com> 2010-10-08 14:58:42 UTC
---
(In reply to comment #2)
> This variation uses B1 for your first attempt and B2 for your second attempt.
>
> template <class T, int C> class A;
>
> template <class T, int C, A<T,C> &a> class B1;
>
> template <class T, int C, A<T,C> &a> class B2;
>
> template <class T, int C> class A
> {
> template <A &a> friend class B1;
>
> template <A &a> friend class B2<T,C,a>;
> };
>
> // instantiation
> template class A<char,128>;
>
>
> This code is not valid, G++ is correct to reject it.
Please explain why the code is invalid, and do not click "Resolved invalid"
until ClassB is a friend of ClassA.