From: Peter Munch <peterrmuench@gmail.com>
Date: Tue, 22 Feb 2022 13:46:26 +0000 (+0100)
Subject: Fix p:d:T::copy_triangulation()
X-Git-Tag: v9.4.0-rc1~449^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F13434%2Fhead;p=dealii.git

Fix p:d:T::copy_triangulation()
---

diff --git a/doc/news/changes/minor/20220222Dravins b/doc/news/changes/minor/20220222Dravins
new file mode 100644
index 0000000000..2a40062e50
--- /dev/null
+++ b/doc/news/changes/minor/20220222Dravins
@@ -0,0 +1,7 @@
+Fixed: The function parallel::distributed::copy_triangulation() used to
+copy the reference to the attached SolutionTransfer instance, which resulted
+in calling the same SolutionTransfer instance multiple times if the 
+triangulation and the new triangulation are refined/coarsened independently.
+This has been fixed. 
+<br>
+(Ivo Dravins, Peter Munch, 2022/02/22)
diff --git a/source/distributed/tria.cc b/source/distributed/tria.cc
index effa4a068b..051ea1540a 100644
--- a/source/distributed/tria.cc
+++ b/source/distributed/tria.cc
@@ -3953,8 +3953,6 @@ namespace parallel
             other_distributed->coarse_cell_to_p4est_tree_permutation;
           p4est_tree_to_coarse_cell_permutation =
             other_distributed->p4est_tree_to_coarse_cell_permutation;
-          this->cell_attached_data = other_distributed->cell_attached_data;
-          this->data_transfer      = other_distributed->data_transfer;
 
           // create deep copy of connectivity graph
           typename dealii::internal::p4est::types<dim>::connectivity