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GeezerVison is showing github.com — fix: guard AutoInterrupt terminate during interpreter shutdown by lweyrich1 · Pull Request #2105 · gitpython-developers/GitPython

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@lweyrich1

@lweyrich1 lweyrich1 commented Feb 25, 2026

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Fixes #2102

On Windows during interpreter shutdown, process objects can be partially torn down and terminate() may raise AttributeError (e.g. missing TerminateProcess).

This PR treats that similarly to the existing OSError handling in _AutoInterrupt._terminate() and adds a regression test covering the AttributeError case.

Tests: pytest -q test/test_autointerrupt.py

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Byron
Byron approved these changes Feb 26, 2026
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Thanks a lot for the fix, looks good to me!

I will merge once CI is fixed.

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@EliahKagan EliahKagan mentioned this pull request Mar 9, 2026
Switch back from Alpine to Debian for WSL #2108
Merged
lweyrich1 and others added 2 commits March 9, 2026 13:47
@lweyrich1 @EliahKagan
fix: ignore AutoInterrupt terminate errors during shutdown
3cfd229
@EliahKagan
Remove unnecessary pytest import in a test module
357aad1
@EliahKagan
EliahKagan force-pushed the fix-autointerrupt-shutdown-guard branch from dae9b25 to 357aad1 Compare March 9, 2026 17:56
EliahKagan
EliahKagan approved these changes Mar 9, 2026
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I've made two changes:

  • Rebased this onto main after merging #2108 to fix #2107 (which arose more recently than #2105 (review) and is not due to changes here, but would have appeared here next time CI ran).
  • Fixed the blocker mentioned in #2105 (review) where the lint job failed. This was due to an unnecessary import pytest (since the module does not use anything from the pytest module in its own code).

I plan to merge this once CI passes.

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@EliahKagan
EliahKagan requested a review from Copilot March 9, 2026 18:03
Copilot started reviewing on behalf of EliahKagan March 9, 2026 18:03
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Pull request overview

Fixes a Windows interpreter-shutdown edge case where Git.AutoInterrupt._terminate() can raise AttributeError from subprocess.Popen.terminate() due to partially torn-down stdlib internals, preventing noisy “Exception ignored in: del” messages.

Changes:

  • Treat AttributeError from proc.terminate() similarly to existing OSError handling in _AutoInterrupt._terminate().
  • Add a regression test that simulates terminate() raising AttributeError and asserts _terminate() does not raise and clears proc.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File Description
git/cmd.py Extends _AutoInterrupt._terminate() exception handling to include AttributeError during termination.
test/test_autointerrupt.py Adds a focused regression test for AttributeError raised from terminate().

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Comment thread git/cmd.py
# On interpreter shutdown (notably on Windows), parts of the stdlib used by
# subprocess can already be torn down (e.g. `subprocess._winapi` becomes None),
# which can cause AttributeError during terminate(). In that case, we prefer
# to silently ignore to avoid noisy "Exception ignored in: __del__" messages.

Copilot AI Mar 9, 2026

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Catching AttributeError unconditionally here can mask real runtime failures when _terminate() is called outside interpreter shutdown (e.g. the kill_after_timeout path in handle_process_output). Consider only suppressing AttributeError during interpreter finalization (e.g. getattr(sys, "is_finalizing", lambda: False)()), and otherwise re-raising so unexpected terminate/wait breakages don’t silently leave processes running. Also, the comment says “silently ignore” but this logs at INFO—either adjust the wording or log level to match intent.

Suggested change
# to silently ignore to avoid noisy "Exception ignored in: __del__" messages.
# to log and ignore to avoid noisy "Exception ignored in: __del__" messages.
if isinstance(ex, AttributeError) and not getattr(sys, "is_finalizing", lambda: False)():
# Outside interpreter finalization, an AttributeError here likely indicates
# a real problem (e.g. broken subprocess internals), so re-raise it instead
# of silently leaving the process running.
raise

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Copilot uses AI. Check for mistakes.

@EliahKagan EliahKagan Mar 9, 2026

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There may be some merit to this concern, but I don't think it needs to block the change here, since AttributeError really should not arise here in any other way. I'm also not entirely sure that a change along the lines of what the model suggests here would be robust enough to be worth doing. But probably some future change to make this more robust, or do log in more detail when the capability to do so is present, or both, could be worthwhile. (I reiterate that I don't consider this blocking.)

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@EliahKagan
EliahKagan merged commit e23c548 into gitpython-developers:main Mar 9, 2026
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@EliahKagan

EliahKagan commented Mar 9, 2026

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Thanks @lweyrich1!

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736-c41-2c1-e464fc974 pushed a commit to Swiss-Armed-Forces/Loom that referenced this pull request Apr 27, 2026
open-source Pipeline Loom MR Pipeline Trigger @736-c41-2c1-e464fc974
chore(deps): update dependency gitpython to v3.1.47
20381c1
This MR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [gitpython](https://github.com/gitpython-developers/GitPython) | dev | patch | `3.1.46` → `3.1.47` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/gitpython-developers/GitPython/badge)](https://securityscorecards.dev/viewer/?uri=github.com/gitpython-developers/GitPython) |

---

### Release Notes

<details>
<summary>gitpython-developers/GitPython (gitpython)</summary>

### [`v3.1.47`](https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47): - with security fixes

[Compare Source](gitpython-developers/GitPython@3.1.46...3.1.47)

#### Advisories

- <GHSA-rpm5-65cw-6hj4>
- <GHSA-x2qx-6953-8485>

#### What's Changed

- Prepare next release by [@&#8203;Byron](https://github.com/Byron) in [#&#8203;2095](gitpython-developers/GitPython#2095)
- Bump git/ext/gitdb from `335c0f6` to `4c63ee6` by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2096](gitpython-developers/GitPython#2096)
- DOC: README Add urls and updated a relative url by [@&#8203;Timour-Ilyas](https://github.com/Timour-Ilyas) in [#&#8203;2098](gitpython-developers/GitPython#2098)
- Fix GitConfigParser ignoring multiple \[include] path entries by [@&#8203;daniel7an](https://github.com/daniel7an) in [#&#8203;2100](gitpython-developers/GitPython#2100)
- Switch back from Alpine to Debian for WSL by [@&#8203;EliahKagan](https://github.com/EliahKagan) in [#&#8203;2108](gitpython-developers/GitPython#2108)
- Bump git/ext/gitdb from `4c63ee6` to `5c1b303` by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2106](gitpython-developers/GitPython#2106)
- Run `gc.collect()` twice in `test_rename` on Python 3.12 by [@&#8203;EliahKagan](https://github.com/EliahKagan) in [#&#8203;2109](gitpython-developers/GitPython#2109)
- fix: guard AutoInterrupt terminate during interpreter shutdown by [@&#8203;lweyrich1](https://github.com/lweyrich1) in [#&#8203;2105](gitpython-developers/GitPython#2105)
- Improve CI infrastructure for pre-commit by [@&#8203;EliahKagan](https://github.com/EliahKagan) in [#&#8203;2110](gitpython-developers/GitPython#2110)
- Bump the pre-commit group with 5 updates by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2111](gitpython-developers/GitPython#2111)
- Upgrade Sphinx for 3.14 support; drop doc build support on 3.8; test 3.14 by [@&#8203;EliahKagan](https://github.com/EliahKagan) in [#&#8203;2112](gitpython-developers/GitPython#2112)
- Fix `Repo.active_branch` resolution for reftable-backed repositories by [@&#8203;Copilot](https://github.com/Copilot) in [#&#8203;2114](gitpython-developers/GitPython#2114)
- docs: warn about GitDB performance with large commits by [@&#8203;mvanhorn](https://github.com/mvanhorn) in [#&#8203;2115](gitpython-developers/GitPython#2115)
- cmd: fix kwarg formatting in docstring example by [@&#8203;UweSchwaeke](https://github.com/UweSchwaeke) in [#&#8203;2117](gitpython-developers/GitPython#2117)
- Bump <https://github.com/astral-sh/ruff-pre-commit> from v0.15.5 to 0.15.8 in the pre-commit group by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;2122](gitpython-developers/GitPython#2122)
- Add trailer support for commit creation by [@&#8203;Krishnachaitanyakc](https://github.com/Krishnachaitanyakc) in [#&#8203;2116](gitpython-developers/GitPython#2116)
- Harden commit trailer subprocess handling and align trailer I/O paths by [@&#8203;Copilot](https://github.com/Copilot) in [#&#8203;2125](gitpython-developers/GitPython#2125)
- git.cmd.Git.execute(..): fix `with_stdout=False` by [@&#8203;ngie-eign](https://github.com/ngie-eign) in [#&#8203;2126](gitpython-developers/GitPython#2126)
- Make sure that multi-options are checked after splitting them with `shlex` by [@&#8203;Byron](https://github.com/Byron) in [#&#8203;2130](gitpython-developers/GitPython#2130)
- Block unsafe underscored git kwargs / Fix for GHSA-rpm5-65cw-6hj4 by [@&#8203;WesR](https://github.com/WesR) in [#&#8203;2131](gitpython-developers/GitPython#2131)

#### New Contributors

- [@&#8203;Timour-Ilyas](https://github.com/Timour-Ilyas) made their first contribution in [#&#8203;2098](gitpython-developers/GitPython#2098)
- [@&#8203;daniel7an](https://github.com/daniel7an) made their first contribution in [#&#8203;2100](gitpython-developers/GitPython#2100)
- [@&#8203;lweyrich1](https://github.com/lweyrich1) made their first contribution in [#&#8203;2105](gitpython-developers/GitPython#2105)
- [@&#8203;Copilot](https://github.com/Copilot) made their first contribution in [#&#8203;2114](gitpython-developers/GitPython#2114)
- [@&#8203;mvanhorn](https://github.com/mvanhorn) made their first contribution in [#&#8203;2115](gitpython-developers/GitPython#2115)
- [@&#8203;UweSchwaeke](https://github.com/UweSchwaeke) made their first contribution in [#&#8203;2117](gitpython-developers/GitPython#2117)
- [@&#8203;Krishnachaitanyakc](https://github.com/Krishnachaitanyakc) made their first contribution in [#&#8203;2116](gitpython-developers/GitPython#2116)
- [@&#8203;ngie-eign](https://github.com/ngie-eign) made their first contribution in [#&#8203;2126](gitpython-developers/GitPython#2126)
- [@&#8203;WesR](https://github.com/WesR) made their first contribution in [#&#8203;2131](gitpython-developers/GitPython#2131)

**Full Changelog**: <gitpython-developers/GitPython@3.1.46...3.1.47>

</details>

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box

---

This MR has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xNDEuNSIsInVwZGF0ZWRJblZlciI6IjQzLjE0MS41IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJkZXBlbmRlbmNpZXMiLCJyZW5vdmF0ZSJdfQ==-->

See merge request swiss-armed-forces/cyber-command/cea/loom!486

Co-authored-by: Loom MR Pipeline Trigger <group_103951964_bot_9504bb8dead6d4e406ad817a607f24be@noreply.gitlab.com>
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@EliahKagan EliahKagan EliahKagan approved these changes
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AttributeError: 'NoneType' object has no attribute 'TerminateProcess' when accessing tree during iter_commits

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@lweyrich1 @EliahKagan @Byron
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