update boost

linx64/include/boost/asio/executor.hpp

@@ -2,7 +2,7 @@
 // executor.hpp
 // ~~~~~~~~~~~~
 //
-// Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
 //
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -16,8 +16,12 @@
 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
 
 #include <boost/asio/detail/config.hpp>
+
+#if !defined(BOOST_ASIO_NO_TS_EXECUTORS)
+
 #include <typeinfo>
 #include <boost/asio/detail/cstddef.hpp>
+#include <boost/asio/detail/executor_function.hpp>
 #include <boost/asio/detail/memory.hpp>
 #include <boost/asio/detail/throw_exception.hpp>
 #include <boost/asio/execution_context.hpp>
@@ -254,7 +258,7 @@ public:
 
 private:
 #if !defined(GENERATING_DOCUMENTATION)
-  class function;
+  typedef detail::executor_function function;
   template <typename, typename> class impl;
 
 #if !defined(BOOST_ASIO_NO_TYPEID)
@@ -340,4 +344,6 @@ BOOST_ASIO_USES_ALLOCATOR(boost::asio::executor)
 # include <boost/asio/impl/executor.ipp>
 #endif // defined(BOOST_ASIO_HEADER_ONLY)
 
+#endif // !defined(BOOST_ASIO_NO_TS_EXECUTORS)
+
 #endif // BOOST_ASIO_EXECUTOR_HPP