From 3eca76c28bdc5fbe048466a45cb102a71526ab3c Mon Sep 17 00:00:00 2001
From: Daniel Arndt <daniel.arndt@iwr.uni-heidelberg.de>
Date: Tue, 23 Jan 2018 10:20:31 +0100
Subject: [PATCH] Avoid link errors in GeometryInfo<0>

---
 include/deal.II/base/geometry_info.h | 4 ++--
 source/base/geometry_info.cc         | 9 ++++-----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/include/deal.II/base/geometry_info.h b/include/deal.II/base/geometry_info.h
index 6662148f80..3c6f3f9382 100644
--- a/include/deal.II/base/geometry_info.h
+++ b/include/deal.II/base/geometry_info.h
@@ -1121,7 +1121,7 @@ struct GeometryInfo<0>
    * with the UCD numbering, this field can also be used like a
    * old_to_lexicographic mapping.
    */
-  static constexpr std::array<unsigned int, vertices_per_cell> ucd_to_deal {{0}};
+  static const std::array<unsigned int, vertices_per_cell> ucd_to_deal;
 
   /**
    * Rearrange vertices for OpenDX output.  For a cell being written in OpenDX
@@ -1136,7 +1136,7 @@ struct GeometryInfo<0>
    *   out << cell->vertex(dx_to_deal[i]);
    * @endcode
    */
-  static constexpr std::array<unsigned int, vertices_per_cell> dx_to_deal {{0}};
+  static const std::array<unsigned int, vertices_per_cell> dx_to_deal;
 };
 
 
diff --git a/source/base/geometry_info.cc b/source/base/geometry_info.cc
index c9cb09cec6..77cc7ce413 100644
--- a/source/base/geometry_info.cc
+++ b/source/base/geometry_info.cc
@@ -54,12 +54,11 @@ template <int dim>
 constexpr std::array<unsigned int, GeometryInfo<dim>::vertices_per_cell>
 GeometryInfo<dim>::ucd_to_deal;
 
-constexpr std::array<unsigned int, GeometryInfo<0>::vertices_per_cell>
-GeometryInfo<0>::ucd_to_deal;
-
-constexpr std::array<unsigned int, GeometryInfo<0>::vertices_per_cell>
-GeometryInfo<0>::dx_to_deal;
+const std::array<unsigned int, GeometryInfo<0>::vertices_per_cell>
+GeometryInfo<0>::ucd_to_deal = {{0}};
 
+const std::array<unsigned int, GeometryInfo<0>::vertices_per_cell>
+GeometryInfo<0>::dx_to_deal = {{0}};
 
 template struct GeometryInfo<1>;
 template struct GeometryInfo<2>;
-- 
2.39.5