From b36230bee71b60f39f56728cd08e842d79fc5a83 Mon Sep 17 00:00:00 2001
From: Thomas Heller <theller@ctypes.org>
Date: Tue, 24 Sep 2002 17:24:25 +0000
Subject: [PATCH] backport of the checkin of revision 2.69 of selectmodule.c

On Windows, call WSAGetLastError() to retrieve the error number.

Bugfix candidate, will backport to release22-maint myself.
---
 Modules/selectmodule.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index ceaf3fa92d20..ec3a8c735552 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -268,9 +268,16 @@ select_select(PyObject *self, PyObject *args)
 	n = select(max, &ifdset, &ofdset, &efdset, tvp);
 	Py_END_ALLOW_THREADS
 
+#ifdef MS_WINDOWS
+	if (n == SOCKET_ERROR) {
+		errno = WSAGetLastError();
+		PyErr_SetFromErrno(SelectError);
+	}
+#else
 	if (n < 0) {
 		PyErr_SetFromErrno(SelectError);
 	}
+#endif
 	else if (n == 0) {
                 /* optimization */
 		ifdlist = PyList_New(0);
-- 
2.47.3