c++/7780: -Woverloaded-virtual generating false-positives

[linux_dr at yahoo dot com]

>Number:         7780
>Category:       c++
>Synopsis:       -Woverloaded-virtual generating false-positives
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 30 11:36:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Loren Osborn <linux_dr@yahoo.com>
>Release:        gcc 3.2
>Organization:
>Environment:
Linux Mandrake 8.1
>Description:
-Woverloaded-virtual reports that a member function "was hidden by" another member function any time a derived class implements a virtual function that is overloaded.

>From gcc man page:
       -Woverloaded-virtual
              (C++ only.)  In a derived class, the
              definitions of virtual  functions must
              match the type signature of a virtual
              function declared in the base class.  Use
              this  option  to  request  warnings  when
              a derived class declares a function that
              may be an  erroneous attempt to define a
              virtual function: that is, warn when a
              function with the same  name  as  a
              virtual function  in the base class, but
              with a type signa­ ture that doesn't match
              any virtual functions from the base class.

According to my interpertation of this it should only report overloading a member function where the base class does not declare the same member function with the same arguments.

See attached minimal test case.
>How-To-Repeat:
/usr/local/bin/g++ -Woverloaded-virtual -c -o /dev/null gcc-hiding-detection-bug.cpp
>Fix:
to detect these occurances as different situations
>Release-Note:
>Audit-Trail:
>Unformatted:
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