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Issue #1733986: Fixed mmap crash in accessing elements of second map object

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with same tagname but larger size than first map. (Windows)
This commit is contained in:
Hirokazu Yamamoto 2009-02-28 12:13:07 +00:00
parent f2dc885780
commit b0e10c760c
3 changed files with 32 additions and 1 deletions
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28
Lib/test/test_mmap.py
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@ -499,6 +499,34 @@ class MmapTests(unittest.TestCase):
m.seek(8)
self.assertRaises(ValueError, m.write, "bar")
if os.name == 'nt':
def test_tagname(self):
data1 = "0123456789"
data2 = "abcdefghij"
assert len(data1) == len(data2)
# Test same tag
m1 = mmap.mmap(-1, len(data1), tagname="foo")
m1[:] = data1
m2 = mmap.mmap(-1, len(data2), tagname="foo")
m2[:] = data2
self.assertEquals(m1[:], data2)
self.assertEquals(m2[:], data2)
# Test differnt tag
m1 = mmap.mmap(-1, len(data1), tagname="foo")
m1[:] = data1
m2 = mmap.mmap(-1, len(data2), tagname="boo")
m2[:] = data2
self.assertEquals(m1[:], data1)
self.assertEquals(m2[:], data2)
def test_tagname_crash(self):
# Should not crash (Issue 1733986)
m = mmap.mmap(-1, 1000, tagname="foo")
try:
mmap.mmap(-1, 5000, tagname="foo")[:] # same tagname, but larger size
except:
pass
def test_main():
run_unittest(MmapTests)