Issue #12196: Add a note on os.pipe2() in the "Whats' new in Python 3.3"
document.
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst
index 2b9bd11..a2d3af1 100644
--- a/Doc/whatsnew/3.3.rst
+++ b/Doc/whatsnew/3.3.rst
@@ -106,6 +106,11 @@
os
--
+* The :mod:`os` module has a new :func:`~os.pipe2` function that makes it
+ possible to create a pipe with :data:`~os.O_CLOEXEC` or
+ :data:`~os.O_NONBLOCK` flags set atomically. This is especially useful to
+ avoid race conditions in multi-threaded programs.
+
* The :mod:`os` module has a new :func:`~os.sendfile` function which provides
an efficent "zero-copy" way for copying data from one file (or socket)
descriptor to another. The phrase "zero-copy" refers to the fact that all of