[Bug fortran/54578] New: [OOP] -Wunused-function warnings for __copy functions

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54578

             Bug #: 54578
           Summary: [OOP] -Wunused-function warnings for __copy functions
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: bur...@gcc.gnu.org


Compiling the test case at PR 46897 with -Wall shows the bogus warning:

warning: ‘__copy_component_parent_child_module_Child’ defined but not used
[-Wunused-function]


I wonder whether one should use "!sym->attr.artificial" to silence the warning
or whether some other approach is better.

See also similar warnings (but for user code, where the function is actually
used) at PR 54221.