http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57038
--- Comment #12 from Jan Hubicka <hubicka at ucw dot cz> 2013-05-03 16:48:41 UTC --- > Hi, > you are right, the symbol is also missing in FieldCacheImpl.o. > > Unlike FieldCacheImpl.o, propagg.o really contains symbol: > _ZNSt11_Tuple_implILm0EJRKiEEC1Ev > > I'm going to attach preprocessed propagg.c, hope it will help. Hmm, still not there when I compile propagg.c (renamed to propagg.ii) myself. Perhaps this file is compiled with other options? It really uses weakrefs though, so it still may be weakref bug. Honza