backport: re PR c++/14401 (Uninitialized reference error not reported.)

backport: re PR c++/14401 (Uninitialized reference error not reported.)

        Backport:
        2004-03-08  Mark Mitchell  <mark@codesourcery.com>
        PR c++/14401
        * class.c (check_field_decls): Complain about non-static data
        members of reference type in unions.  Propagate
        CLASSTYPE_REF_FIELDS_NEED_INIT and
        CLASSTYPE_READONLY_FIELDS_NEED_INIT from the types of
        non-static
        data members.
        * init.c (perform_member_init): Complain about members with const
        type that are not explicitly initialized.

From-SVN: r79426