diff -r 298a75c128ad liboctave/boolSparse.cc
--- a/liboctave/boolSparse.cc	Sun Oct 31 16:48:51 2010 +0000
+++ b/liboctave/boolSparse.cc	Mon Nov 01 21:38:41 2010 +0100
@@ -173,7 +173,7 @@
           Array<octave_idx_type> tmp (nz, 1);
           copy_or_memcpy (nz, ridx (), tmp.fortran_vec ());
           retval = Sparse<bool> (Array<bool> (1, 1, true),
-                                 idx_vector (tmp), idx_vector (0), nr, 1,
+                                 idx_vector (tmp), idx_vector (static_cast<octave_idx_type> (0)), nr, 1,
                                  false);
         }
     }
@@ -221,7 +221,7 @@
           Array<octave_idx_type> tmp (nz, 1);
           copy_or_memcpy (nz, ridx (), tmp.fortran_vec ());
           retval = Sparse<double> (Array<double> (1, 1, 1.0),
-                                   idx_vector (tmp), idx_vector (0), nr, 1);
+                                   idx_vector (tmp), idx_vector (static_cast<octave_idx_type> (0)), nr, 1);
         }
     }
 
diff -r 298a75c128ad src/bitfcns.cc
--- a/src/bitfcns.cc	Sun Oct 31 16:48:51 2010 +0000
+++ b/src/bitfcns.cc	Mon Nov 01 21:38:41 2010 +0100
@@ -698,7 +698,7 @@
   octave_value retval;
 
   if (args.length () == 0)
-    retval = octave_int<octave_idx_type> (dim_vector::dim_max ());
+    retval = static_cast<octave_idx_type> (dim_vector::dim_max ());
   else
     print_usage ();
 
diff -r 298a75c128ad src/defun.cc
--- a/src/defun.cc	Sun Oct 31 16:48:51 2010 +0000
+++ b/src/defun.cc	Mon Nov 01 21:38:41 2010 +0100
@@ -184,7 +184,7 @@
             isargout[k++] = false;
           else
             {
-              int l = std::min (k + p->numel (), nout);
+              int l = std::min (static_cast<int> (k + p->numel ()), nout);
               while (k < l)
                 isargout[k++] = true;
             }