mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

Issue #8650: zlib.compress() and zlib.decompress() raise an OverflowError if

Browse source 
the input buffer length doesn't fit into an unsigned int (length bigger than
2^32-1 bytes).
This commit is contained in:
Victor Stinner 2011-01-04 02:07:36 +00:00
parent b3c9e073fc
commit 8848c7a37f
3 changed files with 33 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

12
Lib/test/test_zlib.py
View file

@ -2,7 +2,7 @@ import unittest
from test import support
import binascii
import random
from test.support import precisionbigmemtest, _1G
from test.support import precisionbigmemtest, _1G, _4G
zlib = support.import_module('zlib')
@ -158,6 +158,16 @@ class CompressTestCase(BaseCompressTestCase, unittest.TestCase):
def test_big_decompress_buffer(self, size):
self.check_big_decompress_buffer(size, zlib.decompress)
@precisionbigmemtest(size=_4G + 100, memuse=1)
def test_length_overflow(self, size):
if size < _4G + 100:
self.skipTest("not enough free memory, need at least 4 GB")
data = b'x' * size
try:
self.assertRaises(OverflowError, zlib.compress, data, 1)
finally:
data = None
class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase):
# Test compression object