With this change, the tests run for me on a local build of Python 3.14.
There are a lot of failures related to sys.getrefcount() but that seems
to be an unrelated issue.
Closes msgspec#810. Fixes msgspec#651. Fixes msgspec#795.

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JelleZijlstra added a commit to JelleZijlstra/msgspec that referenced this pull request

Fixes at least some of the failures reported in:
msgspec#852 (comment)
These were exposed by a bug in 3.14b1 where TypedDict reported
incorrect `__annotations__` but correct `__required_keys__`. msgspec
would crash in this case. The bug is reproducible on earlier Python
versions by manually manipulating attributes on a TypedDict class.
It's a pretty marginal bug but I would argue the extension should
be robust to this sort of edge case.

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manzt added a commit to marimo-team/msgspec that referenced this pull request

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ofek approved these changes Oct 19, 2025

manzt pushed a commit to marimo-team/msgspec that referenced this pull request

manzt added a commit to marimo-team/msgspec that referenced this pull request

* Fix crash when TypedDict contains incorrect metadata (msgspec#853)
* Fix annotations support on 3.14 (msgspec#852)
* Relax all getrefcount tests to allow lower numbers (msgspec#854)
* Add 3.14 to CI (msgspec#888)
* add free-threading support  (msgspec#877)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
* Enable Python 3.14 tests in CI
Remove cp314-* from CIBW_TEST_SKIP to allow Python 3.14 tests to run.
Previously, 3.14 wheels were built but tests were skipped.
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Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Co-authored-by: Miro Hrončok <miro@hroncok.cz>
Co-authored-by: Ofek Lev <ofekmeister@gmail.com>
Co-authored-by: Kumar Aditya <kumaraditya@python.org>