Sourced from pyo3's releases.

PyO3 0.22.5

This release fixes a compile regression from 0.22.4 where #[pymethods] with name __clear__ and clear would generate code with a naming conflict. Thanks @​awolverp for the report and @​Icxolu for the fix!

PyO3 0.22.4

This release is a security fix for PyO3 0.22.0 through 0.22.3.

The PyWeakrefMethods trait functions for reading borrowed values from Python weak references have been identified as unsound, because they did not account for the possibility the last strong reference could be cleared at any time, leading the borrowed value to be dangling and risk of use-after-free.

PyO3 0.22.4 protects against this issue by making these methods permanently leak strong references. The methods are also marked deprecated and will be removed in PyO3 0.23. Users should switch to use the use PyWeakrefMethods functions which return owned references (the deprecation messages indicate the appropriate upgrade paths).

These functions were added in PyO3 0.22.0; all versions from 0.22.0 through 0.22.3 have been yanked.

Aside from the security fix, PyO3 0.22.4 contains a number of other bugfixes, including:

• A fix for cases where __traverse__ functions of base types were not called when using #[pyclass(extends = ...)]
• A fix for a regression in 0.22.3 where PyO3 generated code would trigger compile failures with crates using #![forbid(unsafe_code)]

Thank you to the following contributors for the improvements:

@​davidhewitt @​ngoldbaum @​exg @​Icxolu

PyO3 0.22.3

This release contains a number of quality improvements building upon PyO3 0.22.2.

Python function calls (using .call0(), .call1(args) and .call(args, kwargs)) will now make use of the "vectorcall" calling conventions where possible, which can reduce overheads in many cases.

There have been several fix-ups to PyO3's FFI definitions. A new pyo3::ffi::compat namespace has been added which offers some backwards-compatible implementations of Python APIs otherwise normally only available on recent Pythons.

There have been numerous other bug-fixes and minor tweaks to improve user experience.

Thank you to the following contributors for the improvements:

@​birkenfeld @​ChayimFriedman2 @​csernazs @​davidhewitt @​Icxolu @​jakelishman @​LilyFoote @​ngoldbaum @​Zyell

Sourced from pyo3's changelog.

[0.22.5] - 2024-10-15

Fixed

• Fix regression in 0.22.4 of naming collision in __clear__ slot and clear method generated code. #4619

[0.22.4] - 2024-10-12

Added

• Add FFI definition PyWeakref_GetRef and compat::PyWeakref_GetRef. #4528

Changed

• Deprecate _borrowed methods on PyWeakRef and PyWeakrefProxy (just use the owning forms). #4590

Fixed

• Revert removal of private FFI function _PyLong_NumBits on Python 3.13 and later. #4450
• Fix __traverse__ functions for base classes not being called by subclasses created with #[pyclass(extends = ...)]. #4563
• Fix regression in 0.22.3 failing compiles under #![forbid(unsafe_code)]. #4574
• Workaround possible use-after-free in _borrowed methods on PyWeakRef and PyWeakrefProxy by leaking their contents. #4590
• Fix crash calling PyType_GetSlot on static types before Python 3.10. #4599

[0.22.3] - 2024-09-15

Added

• Add pyo3::ffi::compat namespace with compatibility shims for C API functions added in recent versions of Python.
• Add FFI definition PyDict_GetItemRef on Python 3.13 and newer, and compat::PyDict_GetItemRef for all versions. #4355
• Add FFI definition PyList_GetItemRef on Python 3.13 and newer, and pyo3_ffi::compat::PyList_GetItemRef for all versions. #4410
• Add FFI definitions compat::Py_NewRef and compat::Py_XNewRef. #4445
• Add FFI definitions compat::PyObject_CallNoArgs and compat::PyObject_CallMethodNoArgs. #4461
• Add GilOnceCell<Py<T>>::clone_ref. #4511

Changed

• Improve error messages for #[pyfunction] defined inside #[pymethods]. #4349
• Improve performance of calls to Python by using the vectorcall calling convention where possible. #4456
• Mention the type name in the exception message when trying to instantiate a class with no constructor defined. #4481

Removed

• Remove private FFI definition _Py_PackageContext. #4420

Fixed

• Fix compile failure in declarative #[pymodule] under presence of #![no_implicit_prelude]. #4328

... (truncated)

• 4c88e9a release: 0.22.5
• 8f6464e fix __clear__ slot naming collision with clear method (#4619)
• dff9723 release: 0.22.4
• 3330bf2 fix garbage collection in inheritance cases (#4563)
• 8b23397 ci: pypy 3.7 macos on x64 still
• ce63713 ci: run benchmarks on ubuntu 22.04 (#4609)
• b1173f5 ci: fix more ubuntu-24.04 failures (#4610)
• 7371028 ci: move more jobs to macOS arm (#4600)
• 8e3dc45 avoid calling PyType_GetSlot on static types before Python 3.10 (#4599)
• 969300d leak references for safety in PyWeakRefMethods::upgrade_borrowed (#4590)
• Additional commits viewable in compare view

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
  You can disable automated security fix PRs for this repo from the Security Alerts page.