From 5a32032779ca6ecf8632460b3b2916182fef329d Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Wed, 13 Sep 2017 01:47:21 +0200
Subject: [PATCH] bpo-31249: Fix test_concurrent_futures dangling thread

ProcessPoolShutdownTest.test_del_shutdown() now closes the call queue
and joins its thread, to prevent leaking a dangling thread.
---
 Lib/test/test_concurrent_futures.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Lib/test/test_concurrent_futures.py b/Lib/test/test_concurrent_futures.py
index a888dcacc49160b..7bc733efb1eeb91 100644
--- a/Lib/test/test_concurrent_futures.py
+++ b/Lib/test/test_concurrent_futures.py
@@ -222,11 +222,14 @@ def test_del_shutdown(self):
         list(executor.map(abs, range(-5, 5)))
         queue_management_thread = executor._queue_management_thread
         processes = executor._processes
+        call_queue = executor._call_queue
         del executor
 
         queue_management_thread.join()
         for p in processes.values():
             p.join()
+        call_queue.close()
+        call_queue.join_thread()
 
 
 class WaitTests: