--- Python-2.5.1/Modules/posixmodule.c.orig	2007-04-04 14:30:56.000000000 -0400
+++ Python-2.5.1/Modules/posixmodule.c	2008-06-14 17:35:47.000000000 -0400
@@ -2160,7 +2160,6 @@
 	struct dirent *ep;
 	int arg_is_unicode = 1;
 
-	errno = 0;
 	if (!PyArg_ParseTuple(args, "U:listdir", &v)) {
 		arg_is_unicode = 0;
 		PyErr_Clear();
@@ -2176,6 +2175,7 @@
 		return NULL;
 	}
 	for (;;) {
+		errno = 0;
 		Py_BEGIN_ALLOW_THREADS
 		ep = readdir(dirp);
 		Py_END_ALLOW_THREADS