c++/7218: incorrect 'implicit typename' warnings

[ndry@mdcplus.com]

>Number:         7218
>Category:       c++
>Synopsis:       incorrect 'implicit typename' warnings
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Fri Jul 05 19:16:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     ndry@mdcplus.com
>Release:        3.1.1 pr
>Organization:
>Environment:
FreeBSD 4.6-STABLE
g++31 (GCC) 3.1.1 20020617 (prerelease) [FreeBSD]
>Description:
The code below(test.cc) is compiled without warnings on g++ 3.0.4.
But on g++ 3.1.1 20020617: 

test.cc:5: warning: `typename B<T>::AA' is implicitly a typename
test.cc:5: warning: implicit typename is deprecated, please see the 
   documentation for details

AA should be lookued up at least when A<T> is instantiated.
>How-To-Repeat:
compile this:

template<class T>
struct A { struct AA {}; };

template<class T>
struct B : A<T> { AA a;};

main(){ B<int> b;};
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: