Index: D:/boost/svn/branches/bcbboost/boost/boost/iostreams/detail/enable_if_stream.hpp
===================================================================
--- D:/boost/svn/branches/bcbboost/boost/boost/iostreams/detail/enable_if_stream.hpp	(.../https://svn.boost.org/svn/boost/trunk/boost/iostreams/detail)	(revisione 39531)
+++ D:/boost/svn/branches/bcbboost/boost/boost/iostreams/detail/enable_if_stream.hpp	(.../D:/boost/svn/branches/bcbboost/boost/boost/iostreams/detail)	(copia locale)
@@ -15,7 +15,7 @@
 #include <boost/utility/enable_if.hpp>                  
 #include <boost/iostreams/traits_fwd.hpp>  // is_std_io.
 
-#ifndef BOOST_NO_SFINAE
+#if ! defined(BOOST_NO_SFINAE) && ! BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x592))
 # define BOOST_IOSTREAMS_ENABLE_IF_STREAM(T) \
     , typename boost::enable_if< boost::iostreams::is_std_io<T> >::type* = 0  \
     /**/