--- misc/boost_1_44_0/boost/concept/detail/msvc.hpp
+++ misc/build/boost_1_44_0/boost/concept/detail/msvc.hpp
@@ -12,6 +12,9 @@
 #  include <boost/mpl/if.hpp>
 # endif
 
+// disable spurious "unreferenced formal parameter" warnings
+#pragma warning( push )
+#pragma warning( disable: 4100 )
 
 namespace boost { namespace concepts {
 
@@ -111,4 +114,6 @@
 # endif
 }}
 
+#pragma warning( pop )
+
 #endif // BOOST_CONCEPT_CHECK_MSVC_DWA2006429_HPP