Index: boost/iostreams/code_converter.hpp
===================================================================
--- boost/iostreams/code_converter.hpp	(revision 77454)
+++ boost/iostreams/code_converter.hpp	(working copy)
@@ -254,7 +254,7 @@
 public:
     typedef intern_type                                             char_type;    
     struct category 
-        : impl_type::mode, device_tag, closable_tag, localizable_tag
+        : impl_type::mode, device_tag, closable_tag, localizable_tag, flushable_tag
         { };
     BOOST_STATIC_ASSERT((
         is_same<
@@ -287,6 +287,7 @@
     std::streamsize read(char_type*, std::streamsize);
     std::streamsize write(const char_type*, std::streamsize);
     void imbue(const std::locale& loc) { impl().cvt_.imbue(loc); }
+    bool flush() { return out().flush(dev()); }
 
         // Direct device access.