From: Peter Munch <peterrmuench@gmail.com>
Date: Sun, 22 Mar 2020 17:42:14 +0000 (+0100)
Subject: Fix setting of update_ghost_values
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0249b754ef43ef40b1c2ba4a2ca46508d76f31df;p=dealii.git

Fix setting of update_ghost_values
---

diff --git a/include/deal.II/lac/la_sm_vector.templates.h b/include/deal.II/lac/la_sm_vector.templates.h
index 7d6078b2c5..18a938eda1 100644
--- a/include/deal.II/lac/la_sm_vector.templates.h
+++ b/include/deal.II/lac/la_sm_vector.templates.h
@@ -475,6 +475,8 @@ namespace LinearAlgebra
         std::fill_n(data.values.get() + partitioner->local_size(),
                     partitioner->n_ghost_indices(),
                     Number());
+
+      vector_is_ghosted = false;
     }
 
 
@@ -487,6 +489,8 @@ namespace LinearAlgebra
     {
       Assert(::dealii::VectorOperation::values::add == operation,
              ExcNotImplemented());
+      Assert(vector_is_ghosted == false,
+             ExcMessage("Cannot call compress() on a ghosted vector"));
       partitioner_sm->compress_start(data.values.get(),
                                      data.others,
                                      communication_channel);
@@ -501,6 +505,7 @@ namespace LinearAlgebra
     {
       Assert(::dealii::VectorOperation::values::add == operation,
              ExcNotImplemented());
+      vector_is_ghosted = false;
       partitioner_sm->compress_finish(data.values.get(), data.others);
     }
 
@@ -524,6 +529,7 @@ namespace LinearAlgebra
     {
       partitioner_sm->update_ghost_values_finish(data.values.get(),
                                                  data.others);
+      vector_is_ghosted = true;
     }