fix Arrangement_2

Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/Status_line_CA_1.h

@@ -252,9 +252,11 @@ public:
     /*!\brief
      * copy constructor
      */
+#ifdef DOXYGEN_RUNNING  
     Status_line_CA_1(const Self& p) : 
             Base(static_cast<const Base&>(p)) {  
     }
+#endif
 
     /*!\brief
      * constructs a status line over the \c i-th interval with x-coordinate

Algebraic_kernel_d/include/CGAL/Algebraic_kernel_d/Status_line_CPA_1.h

@@ -174,10 +174,12 @@ public:
     /*!\brief
      * copy constructor
      */
+#ifdef DOXYGEN_RUNNING
     Status_line_CPA_1(const Self& p) : 
             Base(static_cast<const Base&>(p)) {  
     }
-
+#endif
+  
     /*!\brief
      * constructs undefined status line
      */

Arrangement_on_surface_2/include/CGAL/Arr_rat_arc/Algebraic_point_2.h

@@ -89,6 +89,15 @@ public:
     _rational_function(rational_function),
     _x_coordinate(x_coordinate) {}
 
+  Algebraic_point_2_rep(const Algebraic_point_2_rep& other)
+  {
+    if (this != &other) // protect against invalid self-assignment
+    {
+      _rational_function = other._rational_function;
+      _x_coordinate = other._x_coordinate;
+    } 
+  }
+  
   //assignment oparator
   Algebraic_point_2_rep& operator=(const Algebraic_point_2_rep& other)
   {

Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Arc_2.h

@@ -382,10 +382,11 @@ public:
     /*!\brief
      * copy constructor
      */
+#ifdef DOXYGEN_RUNNING  
     Arc_2(const Self& a) :
         Base(static_cast<const Base&>(a)) {
     }
-
+#endif
     //!@}
 
 public:

Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Generic_arc_2.h

@@ -150,10 +150,12 @@ public:
     /*!\brief
      * copy constructor
      */
+#ifdef DOXYGEN_RUNNING  
     Generic_arc_2(const Self& p) :
             Base(static_cast<const Base&>(p)) {  
     }
-    
+#endif
+  
     /*!\brief
      * constructs an arc from a given represenation
      */

Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Generic_point_2.h

@@ -131,10 +131,11 @@ public:
     /*!\brief
      * copy constructor
      */
+#ifdef DOXYGEN_RUNNING  
     Generic_point_2(const Self& p) :
             Base(static_cast<const Base&>(p)) {  
     }
-    
+#endif    
     /*!\brief
      * constructs an arc from a given represenation
      */

Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Point_2.h

@@ -256,10 +256,11 @@ public:
     /*!\brief
      * copy constructor
      */
+#ifdef DOXYGEN_RUNNING  
     Point_2(const Self& p) : 
             Base(static_cast<const Base&>(p)) {  
     }
-
+#endif
     //!@}
 
 public: