c++/2421: can't declare ordinary nested class as friend of template class

[jhl@sssonline.com]

>Number:         2421
>Category:       c++
>Synopsis:       can't declare ordinary nested class as friend of template class
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 28 17:56:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Jonathan H Lundquist
>Release:        2.95.2
>Organization:
>Environment:
Debian 2.2 i386
>Description:
The following is an example of the problem, as described in the synopsis:

class A {
public:
   class X;
};

template<typename T>
class B {
   friend class A::X;
public:
   B() {}
};

int main()
{
   B<int> b;
   return 0;
}

causes 'A::X' does not declare a template type
>How-To-Repeat:
Compile example in description
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/x-c++src; name="friend.cpp"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="friend.cpp"

Y2xhc3MgQSB7CnB1YmxpYzoKICAgY2xhc3MgWDsKfTsKCnRlbXBsYXRlPHR5cGVuYW1lIFQ+CmNs
YXNzIEIgewogICBmcmllbmQgY2xhc3MgQTo6WDsKcHVibGljOgogICBCKCkge30KfTsKCmludCBt
YWluKCkKewogICBCPGludD4gYjsKICAgcmV0dXJuIDA7Cn0KCg==