From c353d7558327de461cdd4a2cc73dbd9d6ad6698a Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Thu, 15 Jan 2015 12:52:05 +0100
Subject: Python issue #23242: SubprocessStreamProtocol now closes the
 subprocess transport at subprocess exit.

Clear also its reference to the transport.
---
 asyncio/subprocess.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/asyncio/subprocess.py b/asyncio/subprocess.py
index a028339..c848a21 100644
--- a/asyncio/subprocess.py
+++ b/asyncio/subprocess.py
@@ -94,8 +94,11 @@ class SubprocessStreamProtocol(streams.FlowControlMixin,
                 reader.set_exception(exc)
 
     def process_exited(self):
-        # wake up futures waiting for wait()
         returncode = self._transport.get_returncode()
+        self._transport.close()
+        self._transport = None
+
+        # wake up futures waiting for wait()
         while self._waiters:
             waiter = self._waiters.popleft()
             if not waiter.cancelled():
-- 
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