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Check PyList_Append return value - #9690

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radarhere merged 1 commit into
python-pillow:mainfrom
radarhere:pylist_append
Jun 21, 2026
Merged

Check PyList_Append return value#9690
radarhere merged 1 commit into
python-pillow:mainfrom
radarhere:pylist_append

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@radarhere radarhere commented Jun 19, 2026

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https://docs.python.org/3/c-api/list.html#c.PyList_Append

int PyList_Append(PyObject *list, PyObject *item)
Part of the Stable ABI. Thread safety: Atomic.
Append the object item at the end of list list. Return 0 if successful; return -1 and set an exception if unsuccessful.

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radarhere merged commit 65eb98d into python-pillow:main Jun 21, 2026
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radarhere deleted the pylist_append branch June 22, 2026 23:27
luketainton pushed a commit to luketainton/repos_webexmemebot that referenced this pull request Jul 1, 2026
renovate[bot] @luketainton
fix(deps): update dependency pillow to <12.3.1,>=12.3.0 (#596)
130540e 
This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [pillow](https://github.com/python-pillow/Pillow) ([changelog](https://github.com/python-pillow/Pillow/releases)) | `<12.2.1,>=12.2.0` → `<12.3.1,>=12.3.0` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/pillow/12.3.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pillow/12.2.0/12.3.0?slim=true) |

---

### Release Notes

<details>
<summary>python-pillow/Pillow (pillow)</summary>

### [`v12.3.0`](https://github.com/python-pillow/Pillow/releases/tag/12.3.0)

[Compare Source](python-pillow/Pillow@12.2.0...12.3.0)

<https://pillow.readthedocs.io/en/stable/releasenotes/12.3.0.html>

#### Removals

- Remove non-image ImageCms modes [#&#8203;9697](python-pillow/Pillow#9697) \[[@&#8203;radarhere](https://github.com/radarhere)]

#### Documentation

- Add release notes for SBOM and performance improvements [#&#8203;9747](python-pillow/Pillow#9747) \[[@&#8203;radarhere](https://github.com/radarhere)]
- Add security release notes [#&#8203;9741](python-pillow/Pillow#9741) \[[@&#8203;radarhere](https://github.com/radarhere)]
- Add release notes for Python 3.15 beta wheels [#&#8203;9696](python-pillow/Pillow#9696) \[[@&#8203;radarhere](https://github.com/radarhere)]
- ImageFont can also be used with ImageText [#&#8203;9597](python-pillow/Pillow#9597) \[[@&#8203;radarhere](https://github.com/radarhere)]
- Additional guidelines for security reports [#&#8203;9659](python-pillow/Pillow#9659) \[[@&#8203;wiredfool](https://github.com/wiredfool)]
- Fixed typo [#&#8203;9636](python-pillow/Pillow#9636) \[[@&#8203;radarhere](https://github.com/radarhere)]
- Added CVEs to 12.2.0 release notes [#&#8203;9591](python-pillow/Pillow#9591) \[[@&#8203;radarhere](https://github.com/radarhere)]
- Revise development support information in README [#&#8203;9583](python-pillow/Pillow#9583) \[[@&#8203;aclark4life](https://github.com/aclark4life)]
- Add INCIDENT\_RESPONSE.md [#&#8203;9555](python-pillow/Pillow#9555) \[[@&#8203;aclark4life](https://github.com/aclark4life)]
- Add STRIDE threat model to security docs [#&#8203;9562](python-pillow/Pillow#9562) \[[@&#8203;aclark4life](https://github.com/aclark4life)]
- Add CVEs to 12.2.0 release notes [#&#8203;9556](python-pillow/Pillow#9556) \[[@&#8203;radarhere](https://github.com/radarhere)]
- Update README with revised security policy [#&#8203;9553](python-pillow/Pillow#9553) \[[@&#8203;radarhere](https://github.com/radarhere)]
- Update security policy [#&#8203;9552](python-pillow/Pillow#9552) \[[@&#8203;aclark4life](https://github.com/aclark4life)]
- Update macOS tested Python versions [#&#8203;9534](python-pillow/Pillow#9534) \[[@&#8203;radarhere](https://github.com/radarhere)]

#### Dependencies

- Update dependency harfbuzz to v14.2.1 [#&#8203;9720](python-pillow/Pillow#9720) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency mypy to v2 [#&#8203;9653](python-pillow/Pillow#9653) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency cibuildwheel to v4 [#&#8203;9665](python-pillow/Pillow#9665) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update github-actions [#&#8203;9655](python-pillow/Pillow#9655) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency libavif to v1.4.2 [#&#8203;9652](python-pillow/Pillow#9652) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency lcms2 to v2.19.1 [#&#8203;9651](python-pillow/Pillow#9651) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency check-jsonschema to v0.37.2 [#&#8203;9650](python-pillow/Pillow#9650) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update google/oss-fuzz digest to [`d872252`](python-pillow/Pillow@d872252) [#&#8203;9614](python-pillow/Pillow#9614) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency lcms2 to v2.19 [#&#8203;9609](python-pillow/Pillow#9609) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency libpng to v1.6.58 - autoclosed [#&#8203;9608](python-pillow/Pillow#9608) \[@&#8203;[renovate\[bot\]](https://github.com/apps/renovate)]
- Update dependency harfbuzz to v14 [#&#8203;9610](