1 files changed, 9 insertions, 10 deletions
diff --git a/boost/process/detail/posix/asio_fwd.hpp b/boost/process/detail/posix/asio_fwd.hpp
index 06d5c19214..faa7a9d7a2 100644
--- a/boost/process/detail/posix/asio_fwd.hpp
+++ b/boost/process/detail/posix/asio_fwd.hpp
@@ -20,34 +20,33 @@ template<typename Allocator>
 class basic_streambuf;
 
 typedef basic_streambuf<std::allocator<char>> streambuf;
-class io_service;
+class io_context;
 
 
+#if defined(BOOST_ASIO_ENABLE_OLD_SERVICES)
 class signal_set_service;
 template <typename SignalSetService>
 
 class basic_signal_set;
 typedef basic_signal_set<signal_set_service> signal_set;
+#else /* defined(BOOST_ASIO_ENABLE_OLD_SERVICES) */
+class signal_set;
+#endif /* defined(BOOST_ASIO_ENABLE_OLD_SERVICES) */
 
 template <typename Handler>
 class basic_yield_context;
 
 namespace posix {
 
+#if defined(BOOST_ASIO_ENABLE_OLD_SERVICES)
 class stream_descriptor_service;
 
 template <typename StreamDesscriptorService>
 class basic_stream_descriptor;
 typedef basic_stream_descriptor<stream_descriptor_service> stream_descriptor;
-
-
-
-class object_handle_service;
-
-template <typename ObjectHandleService>
-class basic_object_handle;
-
-typedef basic_object_handle<object_handle_service> object_handle;
+#else /* defined(BOOST_ASIO_ENABLE_OLD_SERVICES) */
+class stream_descriptor;
+#endif /* defined(BOOST_ASIO_ENABLE_OLD_SERVICES) */
 
 } //posix
 } //asio