diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 3362427f9974..7f1a85c22134 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2015-07-17 Jonathan Wakely native_handle_type and
native_handle are provided. The handle types
- are defined in terms of the Gthreads abstraction layer.
+ are defined in terms of the Gthreads abstraction layer, although this
+ is subject to change at any time. Any use of
+ native_handle is inherently non-portable and
+ not guaranteed to work between major releases of GCC.
thread: The native handle type is
a typedef for __gthread_t i.e. pthread_t
when GCC is configured with the posix thread
diff --git a/libstdc++-v3/doc/xml/manual/status_cxx2011.xml b/libstdc++-v3/doc/xml/manual/status_cxx2011.xml
index 2b99b9d19706..cf99956b7eb7 100644
--- a/libstdc++-v3/doc/xml/manual/status_cxx2011.xml
+++ b/libstdc++-v3/doc/xml/manual/status_cxx2011.xml
@@ -2670,7 +2670,10 @@ particular release.
__gthread_t i.e. pthread_t