From d480fd717a7cf13eb4b7782e186098f5cbfbb945 Mon Sep 17 00:00:00 2001
From: David Wells <drwells@email.unc.edu>
Date: Wed, 24 Aug 2022 16:20:43 -0400
Subject: [PATCH] Forward declare a usage of LA::d::V.

---
 include/deal.II/grid/tria_description.h       | 28 +++++++++++++------
 .../numerics/data_out_dof_data.templates.h    |  1 +
 .../deal.II/numerics/vector_tools_evaluate.h  |  3 ++
 .../distributed_grids/solution_transfer_05.cc |  2 ++
 4 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/include/deal.II/grid/tria_description.h b/include/deal.II/grid/tria_description.h
index 888353316b..9214fcf449 100644
--- a/include/deal.II/grid/tria_description.h
+++ b/include/deal.II/grid/tria_description.h
@@ -18,16 +18,25 @@
 
 #include <deal.II/base/config.h>
 
+#include <deal.II/base/memory_space.h>
 #include <deal.II/base/mpi_stub.h>
 
 #include <deal.II/grid/cell_id.h>
 #include <deal.II/grid/reference_cell.h>
 #include <deal.II/grid/tria.h>
 
-#include <deal.II/lac/la_parallel_vector.h>
-
 
 DEAL_II_NAMESPACE_OPEN
+#ifndef DOXYGEN
+namespace LinearAlgebra
+{
+  namespace distributed
+  {
+    template <typename Number, typename MemorySpace>
+    class Vector;
+  }
+} // namespace LinearAlgebra
+#endif
 
 /*------------------------------------------------------------------------*/
 
@@ -547,9 +556,10 @@ namespace TriangulationDescription
     template <int dim, int spacedim>
     Description<dim, spacedim>
     create_description_from_triangulation(
-      const Triangulation<dim, spacedim> &              tria,
-      const LinearAlgebra::distributed::Vector<double> &partition,
-      const TriangulationDescription::Settings          settings =
+      const Triangulation<dim, spacedim> &tria,
+      const LinearAlgebra::distributed::Vector<double, MemorySpace::Host>
+        &                                      partition,
+      const TriangulationDescription::Settings settings =
         TriangulationDescription::Settings::default_setting);
 
     /**
@@ -559,9 +569,11 @@ namespace TriangulationDescription
     template <int dim, int spacedim>
     Description<dim, spacedim>
     create_description_from_triangulation(
-      const Triangulation<dim, spacedim> &              tria,
-      const LinearAlgebra::distributed::Vector<double> &partition,
-      const std::vector<LinearAlgebra::distributed::Vector<double>>
+      const Triangulation<dim, spacedim> &tria,
+      const LinearAlgebra::distributed::Vector<double, MemorySpace::Host>
+        &partition,
+      const std::vector<
+        LinearAlgebra::distributed::Vector<double, MemorySpace::Host>>
         &                                      mg_partitions,
       const TriangulationDescription::Settings settings =
         TriangulationDescription::Settings::default_setting);
diff --git a/include/deal.II/numerics/data_out_dof_data.templates.h b/include/deal.II/numerics/data_out_dof_data.templates.h
index 0952f02ba9..71d069885a 100644
--- a/include/deal.II/numerics/data_out_dof_data.templates.h
+++ b/include/deal.II/numerics/data_out_dof_data.templates.h
@@ -44,6 +44,7 @@
 #include <deal.II/hp/q_collection.h>
 
 #include <deal.II/lac/block_vector_base.h>
+#include <deal.II/lac/la_parallel_vector.h>
 #include <deal.II/lac/read_write_vector.h>
 #include <deal.II/lac/vector.h>
 
diff --git a/include/deal.II/numerics/vector_tools_evaluate.h b/include/deal.II/numerics/vector_tools_evaluate.h
index fbb44a6ed7..f647d40671 100644
--- a/include/deal.II/numerics/vector_tools_evaluate.h
+++ b/include/deal.II/numerics/vector_tools_evaluate.h
@@ -25,6 +25,9 @@
 
 #include <deal.II/dofs/dof_handler.h>
 
+#include <deal.II/lac/la_parallel_vector.h>
+#include <deal.II/lac/vector.h>
+
 #include <deal.II/matrix_free/fe_point_evaluation.h>
 
 #include <map>
diff --git a/tests/distributed_grids/solution_transfer_05.cc b/tests/distributed_grids/solution_transfer_05.cc
index e021b80574..50988329ca 100644
--- a/tests/distributed_grids/solution_transfer_05.cc
+++ b/tests/distributed_grids/solution_transfer_05.cc
@@ -30,6 +30,8 @@
 
 #include <deal.II/grid/grid_generator.h>
 
+#include <deal.II/lac/la_parallel_vector.h>
+
 #include "../tests.h"
 
 using namespace dealii;
-- 
2.39.5