Add the missing implementation of a function.

diff --git a/include/deal.II/particles/particle_accessor.h b/include/deal.II/particles/particle_accessor.h
index 62340c4b1604c88af697533bf109cc16dd4c29eb..2d74711b073f7d20ad39029dcbac6c7173aa7d13 100644 (file)
--- a/include/deal.II/particles/particle_accessor.h
+++ b/include/deal.II/particles/particle_accessor.h
@@ -220,6 +220,19 @@ namespace Particles
     template <int, int>
     friend class ParticleHandler;
   };
+
+
+
+  template <int dim, int spacedim>
+  template <class Archive>
+  void
+  ParticleAccessor<dim, spacedim>::serialize(Archive &          ar,
+                                             const unsigned int version)
+  {
+    return particle->second.serialize(ar, version);
+  }
+
+
 } // namespace Particles
 
 DEAL_II_NAMESPACE_CLOSE