From 6491133d1ce5183ee58b76ecc8bc383c907a3866 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Sun, 24 Jan 2021 21:49:07 -0700
Subject: [PATCH] Try to trick MSVC into accepting a default argument.

---
 include/deal.II/grid/grid_tools.h             | 20 +++++------
 include/deal.II/grid/grid_tools_cache.h       |  4 +--
 .../numerics/vector_tools_constraints.h       | 16 ++++-----
 include/deal.II/particles/generators.h        | 35 ++++++++++---------
 4 files changed, 38 insertions(+), 37 deletions(-)

diff --git a/include/deal.II/grid/grid_tools.h b/include/deal.II/grid/grid_tools.h
index 8985886aac..91e58004bb 100644
--- a/include/deal.II/grid/grid_tools.h
+++ b/include/deal.II/grid/grid_tools.h
@@ -176,8 +176,8 @@ namespace GridTools
   double
   volume(const Triangulation<dim, spacedim> &tria,
          const Mapping<dim, spacedim> &      mapping =
-           ReferenceCell::Type::get_hypercube<dim>()
-             .template get_default_linear_mapping<dim, spacedim>());
+           (ReferenceCell::Type::get_hypercube<dim>()
+              .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * Return an approximation of the diameter of the smallest active cell of a
@@ -194,8 +194,8 @@ namespace GridTools
   minimal_cell_diameter(
     const Triangulation<dim, spacedim> &triangulation,
     const Mapping<dim, spacedim> &      mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * Return an approximation of the diameter of the largest active cell of a
@@ -212,8 +212,8 @@ namespace GridTools
   maximal_cell_diameter(
     const Triangulation<dim, spacedim> &triangulation,
     const Mapping<dim, spacedim> &      mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * Given a list of vertices (typically obtained using
@@ -1044,8 +1044,8 @@ namespace GridTools
   extract_used_vertices(
     const Triangulation<dim, spacedim> &container,
     const Mapping<dim, spacedim> &      mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * Find and return the index of the closest vertex to a given point in the
@@ -1872,8 +1872,8 @@ namespace GridTools
     const typename Triangulation<dim, spacedim>::active_cell_iterator &cell,
     const Point<spacedim> &                                            position,
     const Mapping<dim, spacedim> &                                     mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * Compute a globally unique index for each vertex and hanging node
diff --git a/include/deal.II/grid/grid_tools_cache.h b/include/deal.II/grid/grid_tools_cache.h
index a5b48a8371..5ced504c70 100644
--- a/include/deal.II/grid/grid_tools_cache.h
+++ b/include/deal.II/grid/grid_tools_cache.h
@@ -76,8 +76,8 @@ namespace GridTools
      */
     Cache(const Triangulation<dim, spacedim> &tria,
           const Mapping<dim, spacedim> &      mapping =
-            ReferenceCell::Type::get_hypercube<dim>()
-              .template get_default_linear_mapping<dim, spacedim>());
+            (ReferenceCell::Type::get_hypercube<dim>()
+               .template get_default_linear_mapping<dim, spacedim>()));
 
     /**
      * Destructor.
diff --git a/include/deal.II/numerics/vector_tools_constraints.h b/include/deal.II/numerics/vector_tools_constraints.h
index b4e5c5a61f..214d23b479 100644
--- a/include/deal.II/numerics/vector_tools_constraints.h
+++ b/include/deal.II/numerics/vector_tools_constraints.h
@@ -280,8 +280,8 @@ namespace VectorTools
       &                           function_map,
     AffineConstraints<double> &   constraints,
     const Mapping<dim, spacedim> &mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * This function does the same as the
@@ -303,8 +303,8 @@ namespace VectorTools
     const std::set<types::boundary_id> &boundary_ids,
     AffineConstraints<double> &         constraints,
     const Mapping<dim, spacedim> &      mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * Compute the constraints that correspond to boundary conditions of the
@@ -332,8 +332,8 @@ namespace VectorTools
       &                           function_map,
     AffineConstraints<double> &   constraints,
     const Mapping<dim, spacedim> &mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   /**
    * Same as above for homogeneous tangential-flux constraints.
@@ -351,8 +351,8 @@ namespace VectorTools
     const std::set<types::boundary_id> &boundary_ids,
     AffineConstraints<double> &         constraints,
     const Mapping<dim, spacedim> &      mapping =
-      ReferenceCell::Type::get_hypercube<dim>()
-        .template get_default_linear_mapping<dim, spacedim>());
+      (ReferenceCell::Type::get_hypercube<dim>()
+         .template get_default_linear_mapping<dim, spacedim>()));
 
   //@}
 } // namespace VectorTools
diff --git a/include/deal.II/particles/generators.h b/include/deal.II/particles/generators.h
index 46ef1118b6..c0ef6ebaf6 100644
--- a/include/deal.II/particles/generators.h
+++ b/include/deal.II/particles/generators.h
@@ -69,8 +69,8 @@ namespace Particles
       const std::vector<Point<dim>> &     particle_reference_locations,
       ParticleHandler<dim, spacedim> &    particle_handler,
       const Mapping<dim, spacedim> &      mapping =
-        ReferenceCell::Type::get_hypercube<dim>()
-          .template get_default_linear_mapping<dim, spacedim>());
+        (ReferenceCell::Type::get_hypercube<dim>()
+           .template get_default_linear_mapping<dim, spacedim>()));
 
     /**
      * A function that generates one particle at a random location in cell @p cell and with
@@ -108,8 +108,8 @@ namespace Particles
       const types::particle_index                                        id,
       std::mt19937 &                random_number_generator,
       const Mapping<dim, spacedim> &mapping =
-        ReferenceCell::Type::get_hypercube<dim>()
-          .template get_default_linear_mapping<dim, spacedim>());
+        (ReferenceCell::Type::get_hypercube<dim>()
+           .template get_default_linear_mapping<dim, spacedim>()));
 
     /**
      * A function that generates particles randomly in the domain with a
@@ -164,8 +164,8 @@ namespace Particles
       const types::particle_index         n_particles_to_create,
       ParticleHandler<dim, spacedim> &    particle_handler,
       const Mapping<dim, spacedim> &      mapping =
-        ReferenceCell::Type::get_hypercube<dim>()
-          .template get_default_linear_mapping<dim, spacedim>(),
+        (ReferenceCell::Type::get_hypercube<dim>()
+           .template get_default_linear_mapping<dim, spacedim>()),
       const unsigned int random_number_seed = 5432);
 
 
@@ -211,8 +211,8 @@ namespace Particles
         &                             global_bounding_boxes,
       ParticleHandler<dim, spacedim> &particle_handler,
       const Mapping<dim, spacedim> &  mapping =
-        ReferenceCell::Type::get_hypercube<dim>()
-          .template get_default_linear_mapping<dim, spacedim>(),
+        (ReferenceCell::Type::get_hypercube<dim>()
+           .template get_default_linear_mapping<dim, spacedim>()),
       const ComponentMask &                   components = ComponentMask(),
       const std::vector<std::vector<double>> &properties = {});
 
@@ -249,15 +249,16 @@ namespace Particles
      */
     template <int dim, int spacedim = dim>
     void
-    quadrature_points(const Triangulation<dim, spacedim> &triangulation,
-                      const Quadrature<dim> &             quadrature,
-                      const std::vector<std::vector<BoundingBox<spacedim>>>
-                        &                             global_bounding_boxes,
-                      ParticleHandler<dim, spacedim> &particle_handler,
-                      const Mapping<dim, spacedim> &  mapping =
-                        ReferenceCell::Type::get_hypercube<dim>()
-                          .template get_default_linear_mapping<dim, spacedim>(),
-                      const std::vector<std::vector<double>> &properties = {});
+    quadrature_points(
+      const Triangulation<dim, spacedim> &triangulation,
+      const Quadrature<dim> &             quadrature,
+      const std::vector<std::vector<BoundingBox<spacedim>>>
+        &                             global_bounding_boxes,
+      ParticleHandler<dim, spacedim> &particle_handler,
+      const Mapping<dim, spacedim> &  mapping =
+        (ReferenceCell::Type::get_hypercube<dim>()
+           .template get_default_linear_mapping<dim, spacedim>()),
+      const std::vector<std::vector<double>> &properties = {});
   } // namespace Generators
 } // namespace Particles
 
-- 
2.39.5