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gh-146615: Fix error message in method_get for invalid type argument by sunmy2019 · Pull Request #146634 · python/cpython · GitHub

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gh-146615: Fix error message in method_get for invalid type argument - #146634

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serhiy-storchaka merged 5 commits into
python:mainfrom
sunmy2019:gh-146615-5
Mar 31, 2026
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gh-146615: Fix error message in method_get for invalid type argument#146634
serhiy-storchaka merged 5 commits into
python:mainfrom
sunmy2019:gh-146615-5

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sunmy2019 commented Mar 30, 2026 •
edited by bedevere-app Bot
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bedevere-app Bot mentioned this pull request Mar 30, 2026
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sunmy2019 mentioned this pull request Mar 30, 2026
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serhiy-storchaka reviewed Mar 30, 2026
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Please add a test and a NEWS entry.

serhiy-storchaka added needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels Mar 30, 2026
sunmy2019 marked this pull request as ready for review March 30, 2026 18:01
serhiy-storchaka reviewed Mar 30, 2026
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Comment thread Lib/test/test_descr.py Outdated
# METH_METHOD|METH_FASTCALL|METH_KEYWORDS is the only flag combination
# that enters the affected branch in method_get().

import xxlimited

serhiy-storchaka Mar 30, 2026

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

It could be tested without the use of the optional xxlimited module. For example:

array.array.extend.__get__(array.array('I'), 'not_a_type')

Of course, using METH_METHOD|METH_FASTCALL|METH_KEYWORDS in the implementation of array.array.extend is CPython specific, so you can try several other classes and methods in hope that they are implemented in such way. If none of them raises a TypeError, then skip the test (skipTest()). Or maybe mark the test CPython-only?

sunmy2019 Mar 30, 2026 •
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

mark the test CPython-only?

I think this is reasonable. This problem only occurs in C modules. It cannot trigger in pure Python code.

I checked

array.array.extend.__get__(array.array('I'), 'not_a_type')

will not raise error in Pypy.

serhiy-storchaka commented Mar 31, 2026

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LGTM. 👍

serhiy-storchaka merged commit 72d29ea into python:main Mar 31, 2026
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miss-islington-app Bot commented Mar 31, 2026

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Thanks @sunmy2019 for the PR, and @serhiy-storchaka for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖

bedevere-app Bot commented Mar 31, 2026

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GH-146647 is a backport of this pull request to the 3.14 branch.

bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Mar 31, 2026
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Mar 31, 2026
pythongh-146615: Fix crash in __get__() for METH_METHOD descriptors w…
ceacec7 
…ith invalid type argument (pythonGH-146634)

(cherry picked from commit 72d29ea)

Co-authored-by: sunmy2019 <59365878+sunmy2019@users.noreply.github.com>
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Mar 31, 2026
pythongh-146615: Fix crash in __get__() for METH_METHOD descriptors w…
20c327a 
…ith invalid type argument (pythonGH-146634)

(cherry picked from commit 72d29ea)

Co-authored-by: sunmy2019 <59365878+sunmy2019@users.noreply.github.com>

bedevere-app Bot commented Mar 31, 2026

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GH-146648 is a backport of this pull request to the 3.13 branch.

bedevere-app Bot removed the needs backport to 3.13 bugs and security fixes label Mar 31, 2026
serhiy-storchaka pushed a commit that referenced this pull request Mar 31, 2026
[3.14] gh-146615: Fix crash in __get__() for METH_METHOD descriptors …
ed557e6 
…with invalid type argument (GH-146634) (GH-146647)

(cherry picked from commit 72d29ea)

Co-authored-by: sunmy2019 <59365878+sunmy2019@users.noreply.github.com>
serhiy-storchaka pushed a commit that referenced this pull request Mar 31, 2026
[3.13] gh-146615: Fix crash in __get__() for METH_METHOD descriptors …
52bc5c2 
…with invalid type argument (GH-146634) (GH-146648)

(cherry picked from commit 72d29ea)

Co-authored-by: sunmy2019 <59365878+sunmy2019@users.noreply.github.com>
maurycy added a commit to maurycy/cpython that referenced this pull request Mar 31, 2026
Merge branch 'main' into tachyon-ndjson-kolektor
9836ffa 
* main:
  pythongh-145458: use `self.skip_idle` consistently in the tachyon profiler (python#145459)
  pythongh-146615: Fix format specifiers in Objects/ directory (pythonGH-146620)
  pythongh-146615: Fix format specifiers in Python/ directory (pythonGH-146619)
  pythongh-146615: Fix format specifiers in test cextensions (pythonGH-146618)
  pythongh-146615: Fix format specifiers in extension modules (pythonGH-146617)
  pythongh-146615: Fix crash in __get__() for METH_METHOD descriptors with invalid type argument (pythonGH-146634)
  pythongh-146376: Reduce timeout in Emscripten GHA workflow (python#146378)
  pythongh-146442: Fix various bugs in compiler pipeline (python#146443)
  pythongh-146238: Support half-floats in the array module (python#146242)
  pythongh-145056: Add support for merging collections.UserDict and frozendict (pythonGH-146465)
  pythongh-145056: Fix merging of collections.OrderedDict and frozendict (pythonGH-146466)
  pythongh-139633: Run netrc file permission check only once per parse (pythonGH-139634)
pablogsal mentioned this pull request Apr 4, 2026
Merged
clin1234 pushed a commit to clin1234/cpython that referenced this pull request Apr 16, 2026
pythongh-146615: Fix crash in __get__() for METH_METHOD descriptors w…
3743101 
…ith invalid type argument (pythonGH-146634)
ljfp pushed a commit to ljfp/cpython that referenced this pull request Apr 25, 2026
pythongh-146615: Fix crash in __get__() for METH_METHOD descriptors w…
909f42f 
…ith invalid type argument (pythonGH-146634)
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