This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 116a. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.

2024-12-19

2306. Nested friend templates of class templates

The current wording is not clear how to declare that a nested class template of a class template is a friend of its containing template. For example, is

  template <class T> struct C {
    template <bool b> class Foo;
    template <bool b> friend class Foo;
  };

correct, or should it be

  template <class T> struct C {
    template <bool b> class Foo;
    template <class X> template <bool b> friend class C<X>::Foo;
  };

The submitter asked that the issue be withdrawn.