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Issue #15989: Fix several occurrences of integer overflow

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when result of PyLong_AsLong() narrowed to int without checks.

This is a backport of changesets 13e2e44db99d and 525407d89277.
This commit is contained in:
Serhiy Storchaka 2013-01-19 12:26:26 +02:00
parent ff12fae80e
commit 441d30fac7
16 changed files with 129 additions and 20 deletions
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9
Lib/test/test_io.py
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@ -31,6 +31,7 @@ import signal
import errno
import warnings
import pickle
import _testcapi
from itertools import cycle, count
from collections import deque, UserList
from test import support
@ -1903,6 +1904,14 @@ class TextIOWrapperTest(unittest.TestCase):
t.write("A\rB")
self.assertEqual(r.getvalue(), b"XY\nZA\rB")
# Issue 15989
def test_device_encoding(self):
b = self.BytesIO()
b.fileno = lambda: _testcapi.INT_MAX + 1
self.assertRaises(OverflowError, self.TextIOWrapper, b)
b.fileno = lambda: _testcapi.UINT_MAX + 1
self.assertRaises(OverflowError, self.TextIOWrapper, b)
def test_encoding(self):
# Check the encoding attribute is always set, and valid
b = self.BytesIO()