Forward declare explicit template specilaizations for copy_connectivity

diff --git a/include/deal.II/distributed/p4est_wrappers.h b/include/deal.II/distributed/p4est_wrappers.h
index 86ae54efce718af15a6de5cbe41e7efb13a3281a..a9088594bec8913b44991623522ec2fd497db587 100644 (file)
--- a/include/deal.II/distributed/p4est_wrappers.h
+++ b/include/deal.II/distributed/p4est_wrappers.h
@@ -587,6 +587,16 @@ namespace internal
     template <int dim>
     typename types<dim>::connectivity *
     copy_connectivity(const typename types<dim>::connectivity *connectivity);
+
+#  ifndef DOXYGEN
+    template <>
+    typename types<2>::connectivity *
+    copy_connectivity<2>(const typename types<2>::connectivity *connectivity);
+
+    template <>
+    typename types<3>::connectivity *
+    copy_connectivity<3>(const typename types<3>::connectivity *connectivity);
+#  endif
   } // namespace p4est
 } // namespace internal