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gh-142555: Fix null pointer dereference in array.__setitem__ via re-entrant __index__ #142713

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Merged
encukou merged 22 commits into from
Feb 2, 2026
Merged

gh-142555: Fix null pointer dereference in array.__setitem__ via re-entrant __index__ #142713

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71fc725
Fix null pointer dereference in array.__setitem__ via re-entrant __in…
aisk Dec 14, 2025
6c437d5
Update Misc/NEWS.d/next/Core_and_Builtins/2025-12-15-02-02-45.gh-issu…
aisk Dec 15, 2025
e3c728a
Move the news entry to library folder
aisk Dec 15, 2025
67e98b5
Also check if the ob_item's size is changed by user's code
aisk Dec 17, 2025
ad18d48
Add check on more *_setitem methods
aisk Dec 17, 2025
c408c57
Check other setitem methods
aisk Dec 18, 2025
95e4eec
Reduce the comments
aisk Dec 18, 2025
fc6f987
Re-order the test
aisk Dec 18, 2025
c8cbd28
Refactor the array check codes to a function
aisk Dec 19, 2025
0b3db3c
Change the bound check from function to macro
aisk Dec 20, 2025
8eeba89
Revert the format changed made by IDE automatically
aisk Dec 20, 2025
e00b7a4
Revert more format changes
aisk Dec 20, 2025
2b6d5dc
Revert more format changes
aisk Dec 20, 2025
c83b64a
Revert more format test
aisk Dec 20, 2025
d0ff678
Update news entry
aisk Dec 20, 2025
e865d0d
Update Misc/NEWS.d/next/Library/2025-12-15-02-02-45.gh-issue-142555.E…
aisk Dec 27, 2025
0ad0f28
Refactor tests
aisk Dec 27, 2025
b3617c8
Format the macro by PEP7
aisk Dec 27, 2025
deccbf0
Update by review comments
aisk Dec 27, 2025
a4dab68
Simplify the test
aisk Dec 27, 2025
1befa98
Update comment
aisk Dec 27, 2025
37ed8f8
Update Lib/test/test_array.py
aisk Dec 27, 2025
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@aisk
aisk committed Dec 27, 2025
commit 1befa9853b0d2d7906a4c36e3eba3365764d3ec4
3 changes: 2 additions & 1 deletion Lib/test/test_array.py
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Expand Up @@ -1683,7 +1683,8 @@ def test_gh_128961(self):

# Tests for NULL pointer dereference in array.__setitem__
# when the index conversion mutates the array.
# See: gh-142555.
# See: github.com/python/cpython/issues/142555.
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@subTests("dtype", ["b", "B", "h", "H", "i", "l", "q", "I", "L", "Q"])
def test_setitem_use_after_clear_with_int_data(self, dtype):
victim = array.array(dtype, list(range(64)))
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