From 6211b881613de6654ec8b5e77f3c705f1b4becb8 Mon Sep 17 00:00:00 2001
From: Antoine Pitrou <solipsis@pitrou.net>
Date: Sat, 31 Mar 2012 23:50:31 +0200
Subject: [PATCH] Issue #14437: Fix building the _io module under Cygwin.

---
 Misc/NEWS               | 2 ++
 Modules/_io/_iomodule.h | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Misc/NEWS b/Misc/NEWS
index d814b17ff9c..07eea729767 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -105,6 +105,8 @@ Extension Modules
 Build
 -----
 
+- Issue #14437: Fix building the _io module under Cygwin.
+
 - Issue #14387: Do not include accu.h from Python.h.
 
 - Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined.
diff --git a/Modules/_io/_iomodule.h b/Modules/_io/_iomodule.h
index 925e4f2cc72..c198b43e782 100644
--- a/Modules/_io/_iomodule.h
+++ b/Modules/_io/_iomodule.h
@@ -67,7 +67,7 @@ typedef struct {
     PyObject *filename; /* Not used, but part of the IOError object */
     Py_ssize_t written;
 } PyBlockingIOErrorObject;
-PyAPI_DATA(PyObject *) PyExc_BlockingIOError;
+extern PyObject *PyExc_BlockingIOError;
 
 /*
  * Offset type for positioning.