From 3da3fcef961c4be22806d9d94df5f1d0f09dbbc7 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Thu, 19 Feb 1998 20:46:48 +0000
Subject: [PATCH] Check ferror(), not errno, for fread() error.

---
 Objects/fileobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index cd8a7309540..5502f156ff6 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -695,7 +695,7 @@ file_readlines(f, args)
 		Py_END_ALLOW_THREADS
 		if (nread == 0) {
 			sizehint = 0;
-			if (nread == 0)
+			if (!ferror(f->f_fp))
 				break;
 			PyErr_SetFromErrno(PyExc_IOError);
 			clearerr(f->f_fp);