[Bug c++/14803] New: [3.4.0 regression] Spurious warnings on conversion of pointers to member functions

["jbuck at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The example comes from the widely used SystemC library.  3.4 and later versions
of the compiler produce the spurious warning for some, but not all, explicit
conversions from a pointer to member function of a derived class type, to a
pointer to member function of a base class type.  The standard explcitly states
that such conversions are valid.  The diagnostic is

warning: overflow in implicit constant conversion

This construct appears a lot in SystemC, as it represents actions to be
scheduled as pointers to member functions.

-- 
           Summary: [3.4.0 regression] Spurious warnings on conversion of
                    pointers to member functions
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jbuck at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14803