Fixes issue #16140: The subprocess module no longer double closes its
child subprocess.PIPE parent file descriptors on child error prior to
exec().
This would lead to race conditions in multithreaded programs where
another thread opened a file reusing the fd which was then closed out
from beneath it by the errant second close.
diff --git a/Misc/NEWS b/Misc/NEWS
index 49d6a1a..cdc96b8 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -162,6 +162,9 @@
Library
-------
+- Issue #16140: The subprocess module no longer double closes its child
+ subprocess.PIPE parent file descriptors on child error prior to exec().
+
- Remove a bare print to stdout from the subprocess module that could have
happened if the child process wrote garbage to its pre-exec error pipe.