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bpo-30245: possible overflow when organize struct.pack_into error message #1682

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Merged
zhangyangyu merged 10 commits into from
Jun 2, 2017
Merged

bpo-30245: possible overflow when organize struct.pack_into error message #1682

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b46b18d
fix 30245
johanliu May 20, 2017
f228dd7
fix issue 30245
johanliu May 20, 2017
890b93e
fix issue 30245
johanliu May 20, 2017
c876f9a
fix 30245
johanliu May 20, 2017
d7cc609
add name to ACKS
johanliu May 20, 2017
2c3a43e
fix issue30245
johanliu May 20, 2017
3e1d50f
fix
johanliu May 20, 2017
c4a9927
fix
johanliu May 20, 2017
9ed5051
add space in Misc/NEWS
johanliu May 20, 2017
adac2da
Merge branch 'master' into issue30245
johanliu Jun 2, 2017
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fix issue 30245
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@johanliu
johanliu committed May 20, 2017
commit f228dd772cff9f0b526474f860d180899b660984
10 changes: 10 additions & 0 deletions Lib/test/test_struct.py
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Original file line number Diff line number Diff line change
Expand Up @@ -444,6 +444,16 @@ def test_pack_into(self):
self.assertRaises((TypeError, struct.error), struct.pack_into, b'', sb,
None)

# Test overflows cause by large offset and value size (issue 30245)
regex = (
r'pack_into requires a buffer of at least 9223372036854775811 '
r'bytes for packing 4 bytes at offset 9223372036854775807 '
r'\(actual buffer size is 10\)'
)

with self.assertRaisesRegex(struct.error, regex):
struct.pack_into('I', bytearray(10), sys.maxsize, 1)

def test_pack_into_fn(self):
test_string = b'Reykjavik rocks, eow!'
writable_buf = array.array('b', b' '*100)
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