typedef T& param_type; // hh removed const
};
-#if BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT( 0x581 ) )
+#if BOOST_WORKAROUND( __BORLANDC__, < 0x5A0 )
// these are illegal specialisations; cv-qualifies applied to
// references have no effect according to [8.3.2p1],
// C++ Builder requires them though as it treats cv-qualified