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  r70800 | hirokazu.yamamoto | 2009-03-31 22:13:05 +0900 | 1 line

  Issue #5387: Fixed mmap.move crash by integer overflow.
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This commit is contained in:
Hirokazu Yamamoto 2009-03-31 13:44:06 +00:00
parent 6bf6367b67
commit 16caab00a2
3 changed files with 21 additions and 4 deletions
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17
Lib/test/test_mmap.py
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@ -335,6 +335,23 @@ class MmapTests(unittest.TestCase):
mf.close()
f.close()
# more excessive test
data = b"0123456789"
for dest in range(len(data)):
for src in range(len(data)):
for count in range(len(data) - max(dest, src)):
expected = data[:dest] + data[src:src+count] + data[dest+count:]
m = mmap.mmap(-1, len(data))
m[:] = data
m.move(dest, src, count)
self.assertEqual(m[:], expected)
m.close()
# should not crash
m = mmap.mmap(-1, 1)
self.assertRaises(ValueError, m.move, 1, 1, -1)
m.close()
def test_anonymous(self):
# anonymous mmap.mmap(-1, PAGE)
m = mmap.mmap(-1, PAGESIZE)