Merged revisions 70056 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r70056 | hirokazu.yamamoto | 2009-02-28 21:13:07 +0900 | 2 lines
Issue #1733986: Fixed mmap crash in accessing elements of second map object
with same tagname but larger size than first map. (Windows)
........
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index 59b2374..7398227 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -504,6 +504,34 @@
m.seek(8)
self.assertRaises(ValueError, m.write, b"bar")
+ if os.name == 'nt':
+ def test_tagname(self):
+ data1 = b"0123456789"
+ data2 = b"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)