[Bug c++/81347] g++ confused by namespaces and friend classes

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81347

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
             Status|RESOLVED                    |NEW
   Last reconfirmed|                            |2017-07-17
         Resolution|INVALID                     |---
     Ever confirmed|0                           |1

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, this is definitely a GCC bug:

namespace A {

  template <class>
    class tree
    {
      template <class> friend class  map;
    };

}

A::tree<int> x;

namespace A {
  template <class> class  map { };
}

using A::map;