--- a/liboctave/Array.cc
+++ b/liboctave/Array.cc
@@ -383,6 +383,7 @@
 
       return dest + nr*nc;
     }
+
 private:
 
   // Recursive N-d generalized transpose
@@ -417,11 +418,16 @@
       return dest;
     }
 
+  // No copying!
+
+  rec_permute_helper (const rec_permute_helper&);
+
+  rec_permute_helper& operator = (const rec_permute_helper&);
+
 public:
 
   template <class T>
   void permute (const T *src, T *dest) const { do_permute (src, dest, top); }
-
 };
 
 
@@ -599,6 +605,12 @@
         }
     }
 
+  // No copying!
+
+  rec_index_helper (const rec_index_helper&);
+
+  rec_index_helper& operator = (const rec_index_helper&);
+
 public:
 
   template <class T>
@@ -655,6 +667,7 @@
   ~rec_resize_helper (void) { delete [] cext; }
 
 private:
+
   // recursive resizing
   template <class T>
   void do_resize_fill (const T* src, T *dest, const T& rfv, int lev) const
@@ -673,11 +686,18 @@
           fill_or_memset (dext[lev] - k * dd, rfv, dest + k * dd);
         }
     }
+
+  // No copying!
+
+  rec_resize_helper (const rec_resize_helper&);
+
+  rec_resize_helper& operator = (const rec_resize_helper&);
+
 public:
+
   template <class T>
   void resize_fill (const T* src, T *dest, const T& rfv) const
     { do_resize_fill (src, dest, rfv, n-1); }
-
 };
 
 template <class T>

--- a/liboctave/ChangeLog
+++ b/liboctave/ChangeLog
@@ -1,3 +1,10 @@
+2011-01-24  Pascal Dupuis  <Pascal.Dupuis@worldonline.be>
+
+	* SparseQR.h (class SparseQR::SparseQR_reps): Disallow copying.
+	* Array.cc (class rec_permute_helper, class rec_index_helper,
+	class  rec_resize_helper): Likewise.
+	* cmd-edit.cc (class default_command_editor): Likewise.
+
 2011-01-22  Jaroslav Hajek  <highegg@gmail.com>
 
 	* oct-refcount.h: New source.

--- a/liboctave/SparseQR.h
+++ b/liboctave/SparseQR.h
@@ -73,11 +73,22 @@
 
     CXSPARSE_DNAME (n) *N;
 #endif
+
+  private:
+
+    // No copying!
+
+    SparseQR_rep (const SparseQR_rep&);
+
+    SparseQR_rep& operator = (const SparseQR_rep&);
   };
+
 private:
+
   SparseQR_rep *rep;
 
 public:
+
   SparseQR (void) : rep (new SparseQR_rep (SparseMatrix(), 0)) { }
 
   SparseQR (const SparseMatrix& a, int order = 0) :

--- a/liboctave/cmd-edit.cc
+++ b/liboctave/cmd-edit.cc
@@ -753,6 +753,12 @@
   FILE *input_stream;
 
   FILE *output_stream;
+
+  // No copying!
+
+  default_command_editor (const default_command_editor&);
+
+  default_command_editor& operator = (const default_command_editor&);
 };
 
 std::string

--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2011-01-24  Pascal Dupuis  <Pascal.Dupuis@worldonline.be>
+
+	* ov-base-mat.h (class octave_base_matrix): Disallow assignment.
+	* ov-range.h (class octave_range): Likewise.
+
 2011-01-23  John W. Eaton  <jwe@octave.org>
 
 	* ov-struct.cc (octave_scalar_struct::print_raw):

--- a/src/ov-base-mat.h
+++ b/src/ov-base-mat.h
@@ -187,6 +187,12 @@
 
   mutable MatrixType *typ;
   mutable idx_vector *idx_cache;
+
+private:
+
+  // No assignment.
+
+  octave_base_matrix& operator = (const octave_base_matrix&);
 };
 
 #endif

--- a/src/ov-range.h
+++ b/src/ov-range.h
@@ -305,6 +305,10 @@
 
   mutable idx_vector *idx_cache;
 
+  // No assignment.
+
+  octave_range& operator = (const octave_range&);
+
   DECLARE_OCTAVE_ALLOCATOR
 
   DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA

--- a/src/unwind-prot.h
+++ b/src/unwind-prot.h
@@ -127,14 +127,15 @@
     void run (void) { (e_obj->*e_method) (); }
 
   private:
-    // No copying! XXX
+
+    T *e_obj;
+    void (T::*e_method) (void);
+
+    // No copying!
 
     method_elem (const method_elem&);
 
     method_elem operator = (const method_elem&);
-
-    T *e_obj;
-    void (T::*e_method) (void);
   };
 
   // An element that stores arbitrary variable, and restores it.