From f1d81143b7d43a79f12800d8a4079b51271a1a5a Mon Sep 17 00:00:00 2001
From: loylick <KokomovAlex@gmail.com>
Date: Tue, 9 Aug 2016 18:18:45 +0300
Subject: [PATCH] Added const modifier to format_version variable.

---
 include/deal.II/base/data_out_base.h | 2 +-
 source/base/data_out_base.cc         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/deal.II/base/data_out_base.h b/include/deal.II/base/data_out_base.h
index b8b47a160c..0727125ee7 100644
--- a/include/deal.II/base/data_out_base.h
+++ b/include/deal.II/base/data_out_base.h
@@ -994,7 +994,7 @@ namespace DataOutBase
      * this number is used only to verify that the format we are writing is
      * what the current readers and writers understand.
      */
-    static unsigned int format_version;
+    static const unsigned int format_version;
   };
 
   /**
diff --git a/source/base/data_out_base.cc b/source/base/data_out_base.cc
index 0d46dc9ff5..000af86104 100644
--- a/source/base/data_out_base.cc
+++ b/source/base/data_out_base.cc
@@ -1501,7 +1501,7 @@ namespace DataOutBase
   template <int dim, int spacedim>
   const unsigned int Patch<dim,spacedim>::space_dim;
 
-  unsigned int Deal_II_IntermediateFlags::format_version = 3;
+  const unsigned int Deal_II_IntermediateFlags::format_version = 3;
 
 
 
-- 
2.39.5