From bd6d5502ed47e0215a6fdbe989944d8c0f79ad4c Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Mon, 26 Jan 2015 14:34:45 +0100
Subject: PipeHandle.fileno() now raises an exception if the pipe is closed

---
 asyncio/windows_utils.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/asyncio/windows_utils.py b/asyncio/windows_utils.py
index e664296..5f8327e 100644
--- a/asyncio/windows_utils.py
+++ b/asyncio/windows_utils.py
@@ -147,6 +147,8 @@ class PipeHandle:
         return self._handle
 
     def fileno(self):
+        if self._handle is None:
+            raise ValueError("I/O operatioon on closed pipe")
         return self._handle
 
     def close(self, *, CloseHandle=_winapi.CloseHandle):
-- 
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