[Bug fortran/46448] New: [4.6 Regression] [OOP] symbol `__copy_...' is already defined

[janus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46448

           Summary: [4.6 Regression] [OOP] symbol `__copy_...' is already
                    defined
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: ja...@gcc.gnu.org


Simple test case:


module m0
  type :: t
  end type
end module 

module m1
  use m0
  class(t), pointer :: c1
end module

module m2
  use m0
  class(t), pointer :: c2
end module

end


This currently fails with:

/tmp/cciKD2sS.s: Assembler messages:
/tmp/cciKD2sS.s:72: Error: symbol `__copy_m0_t_' is already defined


The test case works with 4.5. The error is a regression of my recent
"polymorphic deep copy" patch:

http://gcc.gnu.org/viewcvs?view=revision&revision=166368


I think this is the same issue as the one reported by Salvatore here:

http://gcc.gnu.org/ml/fortran/2010-11/msg00205.html