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[tests] Backport test_cext and test_cppext (C API tests) from main to the 3.12 branch #127906

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[tests] Backport test_cext and test_cppext (C API tests) from main to the 3.12 branch#127906
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testsTests in the Lib/test dirtopic-C-API

Description

@vstinner
vstinner
opened on Dec 13, 2024

The C API is not well tested in the 3.12 branch. I propose to backport test_cext and test_cppext from the main branch to the 3.12 branch.

Example of recent C++ regression: #127902

Linked PRs

Activity

  1. vstinner
    added
    testsTests in the Lib/test dir
    topic-C-API
    on Dec 13, 2024

  2. vstinner commented on Dec 13, 2024

    @vstinner
    vstinner
    on Dec 13, 2024
    MemberAuthor

    On the 3.12 branch, test_cext currently fails with these warnings:

      C:\victor\python\3.12\include\cpython/unicodeobject.h(205): error C2220: the following warning is treated as an error
  C:\victor\python\3.12\include\cpython/unicodeobject.h(205): warning C4100: '_unused_op': unreferenced formal parameter
  C:\victor\python\3.12\include\cpython/unicodeobject.h(395): warning C4100: '_unused_op': unreferenced formal parameter
  C:\victor\python\3.12\include\cpython/pytime.h(192): warning C4115: 'timeval': named type definition in parentheses
  extension.c(22): warning C4100: '_unused_module': unreferenced formal parameter
  extension.c(44): warning C4100: '_unused_module': unreferenced formal parameter

    I backported MSVC support in Py_UNUSED() to 3.12 to fix unicodeobject.h: PR gh-127907.

  3. vstinner commented on Dec 13, 2024

    @vstinner
    vstinner
    on Dec 13, 2024
    MemberAuthor

    C:\victor\python\3.12\include\cpython/pytime.h(192): warning C4115: 'timeval': named type definition in parentheses

    I wrote #127908 to fix this pytime.h warning.

  4. vstinner
    added 11 commits that reference this issue on Dec 13, 2024

    [3.12] gh-127906: Declare timeval struct in pytime.h on Windows (#127908

    c77bfd7

    pythongh-127906: Backport test_cext from the main branch

    7aeb445

    pythongh-127906: Backport test_cppext changes from main

    48660d5

    pythongh-127906: Update test_cppext from the main branch

    269228d

    pythongh-127906: Backport test_cppext from the main branch

    d80dae7

    pythongh-127906: Test the limited C API in test_cppext

    03d29cd

    pythongh-127906: Test the limited C API in test_cppext

    c95b2d1

    [3.12] gh-127906: Backport test_cppext changes from the main branch (#…

    6544f99

    [3.13] gh-127906: Backport test_cppext changes from the main branch (#…

    b620e50

    pythongh-127906: Test the limited C API in test_cppext

    79b2f66

    gh-127906: Test the limited C API in test_cppext (#127916)

    d05a4e6

  5. 26 remaining items

  6. hroncok
    added a commit that references this issue on Apr 25, 2025

    00666: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    69a8dbb
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    added a commit that references this issue on May 5, 2025

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    f67668d
  8. hroncok
    added 2 commits that reference this issue on May 12, 2025

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    feebd7c

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

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    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

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    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

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  11. stratakis
    added a commit that references this issue on Jun 12, 2025

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    467772f
  12. hroncok
    added a commit that references this issue on Jun 12, 2025

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    c5f0853
  13. befeleme
    added a commit that references this issue on Oct 10, 2025

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    46bb3c5
  14. hrnciar
    added a commit that references this issue on Mar 3, 2026

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    e320aa6
  15. hroncok
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    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    98f5001
  16. befeleme
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    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

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  17. hrnciar
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    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

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  18. hroncok
    added 2 commits that reference this issue on Oct 1, 2026

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    aa4c84e

    00460: pythongh-132415: Update vendored setuptools in ``Lib/test/whee…

    6fc6921
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