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| author | Richard Oudkerk <shibturn@gmail.com> | 2013-02-13 12:18:03 (GMT) |
|---|---|---|
| committer | Richard Oudkerk <shibturn@gmail.com> | 2013-02-13 12:18:03 (GMT) |
| commit | 0d09ba8e0bc57b50984d1968aab3c29de3e1320d (patch) | |
| tree | a91dea1de06d69f47b0ba922c4b46467b6f7c15a /Lib | |
| parent | 7e0191170e95ffd9c95d840a5631e0f1831998f9 (diff) | |
| download | cpython-0d09ba8e0bc57b50984d1968aab3c29de3e1320d.zip cpython-0d09ba8e0bc57b50984d1968aab3c29de3e1320d.tar.gz cpython-0d09ba8e0bc57b50984d1968aab3c29de3e1320d.tar.bz2 | |
Issue #16743: Fix mmap overflow check on 32 bit Windows
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_mmap.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py index 28b52a9..4407c5c 100644 --- a/Lib/test/test_mmap.py +++ b/Lib/test/test_mmap.py @@ -693,6 +693,13 @@ class LargeMmapTests(unittest.TestCase): def test_large_filesize(self): with self._make_test_file(0x17FFFFFFF, b" ") as f: + if sys.maxsize < 0x180000000: + # On 32 bit platforms the file is larger than sys.maxsize so + # mapping the whole file should fail -- Issue #16743 + with self.assertRaises(OverflowError): + mmap.mmap(f.fileno(), 0x180000000, access=mmap.ACCESS_READ) + with self.assertRaises(ValueError): + mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ) with mmap.mmap(f.fileno(), 0x10000, access=mmap.ACCESS_READ) as m: self.assertEqual(m.size(), 0x180000000) |