http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56477
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2013-02-27 22:31:08 UTC --- > where value->symtree->n.sym->ns->parent is NULL. Should be rvalue->symtree->n.sym->ns->parent (copy&paste error).