document change

git-svn-id: https://svn.dealii.org/branches/branch_bigger_global_dof_indices_3@25916 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/source/distributed/tria.cc b/deal.II/source/distributed/tria.cc
index 615ddceddcf05a3aa1e84194e1987ce2e9ea9de7..b8d1f9c9032602595dbcf1c2b19c3528e4671d4d 100644 (file)
--- a/deal.II/source/distributed/tria.cc
+++ b/deal.II/source/distributed/tria.cc
@@ -2815,6 +2815,10 @@ namespace parallel
       number_cache.n_global_active_cells
         = std::accumulate (number_cache.n_locally_owned_active_cells.begin(),
                            number_cache.n_locally_owned_active_cells.end(),
+                                                           /* ensure sum is
+                                                              computed with
+                                                              correct data
+                                                              type:*/
                            static_cast<types::global_dof_index>(0));
     }