From ca062108e7c3aec2405465aa840f80911e8e1fa9 Mon Sep 17 00:00:00 2001
From: Markus Blatt <markus@dr-blatt.de>
Date: Tue, 19 Jun 2018 11:31:56 +0200
Subject: [PATCH] Let Entity return geometry as a copy.

Geometry is lightweight enough and this is what DUNE's grid interface
mandates.
---
 opm/grid/cpgrid/Entity.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/opm/grid/cpgrid/Entity.hpp b/opm/grid/cpgrid/Entity.hpp
index dbc1735aa..f64f7723a 100644
--- a/opm/grid/cpgrid/Entity.hpp
+++ b/opm/grid/cpgrid/Entity.hpp
@@ -149,7 +149,7 @@ namespace Dune
             }
 
             /// Returns the geometry of the entity (does not depend on its orientation).
-            const Geometry& geometry() const;
+            Geometry geometry() const;
 
             /// We do not support refinement, so level() is always 0.
             int level() const
@@ -431,7 +431,7 @@ unsigned int Entity<codim>::subEntities ( const unsigned int cc ) const
 }
 
 template <int codim>
-const typename Entity<codim>::Geometry& Entity<codim>::geometry() const
+typename Entity<codim>::Geometry Entity<codim>::geometry() const
 {
     return pgrid_->geomVector<codim>()[*this];
 }