once.hpp in passenger-5.3.4

- old
+ new

@@ -8,10 +8,16 @@
 //  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)
 
 #include <boost/thread/detail/config.hpp>
+
+#ifdef BOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable: 4702) // unreachable code
+#endif
+
 #include <boost/thread/detail/platform.hpp>
 #if defined(BOOST_THREAD_PLATFORM_WIN32)
 #include <boost/thread/win32/once.hpp>
 #elif defined(BOOST_THREAD_PLATFORM_PTHREAD)
 #if defined BOOST_THREAD_ONCE_FAST_EPOCH
@@ -38,7 +44,11 @@
         call_once(flag,func);
     }
 }
 
 #include <boost/config/abi_suffix.hpp>
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif
 
 #endif