ENH: coordinateSystem: fix cloning. See #863

src/meshTools/coordinate/systems/cartesianCS.H

@@ -115,6 +115,12 @@ public:
         //  \param dictName If non-empty, the sub-dictionary to use.
         cartesian(const dictionary& dict, const word& dictName);
 
+        //- Return clone
+        virtual autoPtr<coordinateSystem> clone() const
+        {
+            return autoPtr<coordinateSystem>::NewFrom<cartesian>(*this);
+        }
+
 
     //- Destructor
     virtual ~cartesian() = default;

src/meshTools/coordinate/systems/coordinateSystem.H

@@ -327,7 +327,7 @@ public:
 
 
     //- Return clone
-    autoPtr<coordinateSystem> clone() const
+    virtual autoPtr<coordinateSystem> clone() const
     {
         return autoPtr<coordinateSystem>::New(*this);
     }

src/meshTools/coordinate/systems/cylindricalCS.H

@@ -154,6 +154,13 @@ public:
         //  \param dictName If non-empty, the sub-dictionary to use.
         cylindrical(const dictionary& dict, const word& dictName);
 
+        //- Return clone
+        virtual autoPtr<coordinateSystem> clone() const
+        {
+            return autoPtr<coordinateSystem>::NewFrom<cylindrical>(*this);
+        }
+
+
     //- Destructor
     virtual ~cylindrical() = default;
 

src/meshTools/coordinate/systems/indirectCS.H

@@ -141,6 +141,12 @@ public:
         //- Construct from global lookup
         indirect(const objectRegistry& obr, const dictionary& dict);
 
+        //- Return clone
+        virtual autoPtr<coordinateSystem> clone() const
+        {
+            return autoPtr<coordinateSystem>::NewFrom<indirect>(*this);
+        }
+
 
     //- Destructor
     virtual ~indirect() = default;