c++/7678: implicity typename deprecated inheritance problem

[dl256@columbia.edu]

>Number:         7678
>Category:       c++
>Synopsis:       implicity typename deprecated inheritance problem
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Aug 21 10:06:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     dl256@columbia.edu
>Release:        gcc-3.1
>Organization:
>Environment:
gnu-linux kernal 2.4.18 (i686)
>Description:
compile the attached file using:

g++ -c experiment.cpp

The compiler warns that "implicit typname is deprecated".

.  The base class is templated.  It takes a traits structure as it's tmeplate argument, and then it creates typedefs in the public area of the class.  The derived class is also templated, but it contains no typedefs.  It is desirable to used the types defined in the base class in the derived class, without using the typename base<__traits>:: qualification.

Is your interpretation of the specification correct for this case? This doesn't make sense to me. The new types should at lease be inherited in the derived class so that we can use them in the usual way (i.e., without full qualification using typename).

>How-To-Repeat:
Just compile the attached file and check the warnings.
>Fix:
Don't know.
>Release-Note:
>Audit-Trail:
>Unformatted:
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