changeset:   88027:24a043355050
branch:      2.7
parent:      88024:debdfa44f020
user:        Serhiy Storchaka <storchaka@gmail.com>
date:        Tue Dec 17 17:32:20 2013 +0200
files:       Objects/fileobject.c
description:
Circumventing a bug in glibc (issue #17976).
Patch by Jaakko Moisio.


diff -r debdfa44f020 -r 24a043355050 Objects/fileobject.c
--- a/Objects/fileobject.c	Tue Dec 17 15:09:45 2013 +0200
+++ b/Objects/fileobject.c	Tue Dec 17 17:32:20 2013 +0200
@@ -1804,7 +1804,7 @@
     const char *s;
     Py_ssize_t n, n2;
     PyObject *encoded = NULL;
-    int err = 0;
+    int err_flag = 0, err;
 
     if (f->f_fp == NULL)
         return err_closed();
@@ -1850,13 +1850,15 @@
     FILE_BEGIN_ALLOW_THREADS(f)
     errno = 0;
     n2 = fwrite(s, 1, n, f->f_fp);
-    if (n2 != n || ferror(f->f_fp))
+    if (n2 != n || ferror(f->f_fp)) {
+        err_flag = 1;
         err = errno;
+    }
     FILE_END_ALLOW_THREADS(f)
     Py_XDECREF(encoded);
     if (f->f_binary)
         PyBuffer_Release(&pbuf);
-    if (err) {
+    if (err_flag) {
         errno = err;
         PyErr_SetFromErrno(PyExc_IOError);
         clearerr(f->f_fp);