Merged revisions 83854 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r83854 | antoine.pitrou | 2010-08-08 22:46:42 +0200 (dim., 08 août 2010) | 4 lines

  Issue #5319: Print an error if flushing stdout fails at interpreter
  shutdown.
........

Python/pythonrun.c

@@ -331,7 +331,7 @@ flush_std_files(void)
     if (fout != NULL && fout != Py_None) {
         tmp = PyObject_CallMethod(fout, "flush", "");
         if (tmp == NULL)
-            PyErr_Clear();
+            PyErr_WriteUnraisable(fout);
         else
             Py_DECREF(tmp);
     }