diff -Naur old/boost/numeric/ublas/functional.hpp new/boost/numeric/ublas/functional.hpp
--- old/boost/numeric/ublas/functional.hpp	2010-07-23 14:36:26.000000000 +0200
+++ new/boost/numeric/ublas/functional.hpp	2010-07-23 14:41:17.000000000 +0200
@@ -1865,7 +1865,7 @@
         // return nearest valid index in column j
         static
         BOOST_UBLAS_INLINE
-        size_type restrict1 (size_type i, size_type j, size_type size1, size_type size2) {
+        size_type restrict1 (size_type i, size_type j, size_type size1, size_type /* size2 */) {
             return (std::max)(j, (std::min) (size1, i));
         }
         // return nearest valid index in row i