From 978a9afc6af6c137065bdcf7ae4ef5450e5b2ec2 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Thu, 29 Jan 2015 17:50:58 +0100
Subject: Issue #23243, asyncio: Emit a ResourceWarning when an event loop or a
 transport is not explicitly closed. Close also explicitly transports in
 test_sslproto.

---
 Lib/asyncio/windows_utils.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'Lib/asyncio/windows_utils.py')

diff --git a/Lib/asyncio/windows_utils.py b/Lib/asyncio/windows_utils.py
index 5f8327eba63..870cd13abe6 100644
--- a/Lib/asyncio/windows_utils.py
+++ b/Lib/asyncio/windows_utils.py
@@ -14,6 +14,7 @@ import os
 import socket
 import subprocess
 import tempfile
+import warnings
 
 
 __all__ = ['socketpair', 'pipe', 'Popen', 'PIPE', 'PipeHandle']
@@ -156,7 +157,10 @@ class PipeHandle:
             CloseHandle(self._handle)
             self._handle = None
 
-    __del__ = close
+    def __del__(self):
+        if self._handle is not None:
+            warnings.warn("unclosed %r" % self, ResourceWarning)
+            self.close()
 
     def __enter__(self):
         return self
-- 
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