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| og:image:alt | Issue
#133467
Proposed Changes
Fix the race of PyTypeObject::tp_base between typemember __base__ and set of __bases__.
Add test case in unit test.
Comment
Root cause
Since the __bases__'s get... |
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Nov 5, 2025
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View reviewed changes
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| fix PyTypeObject->tp_base race in free threading | https://github.com/python/cpython/pull/140549/commits/64583edb77f8378c47aabcf1d6f53885d3df5936 |
| 64583ed | https://github.com/python/cpython/pull/140549/commits/64583edb77f8378c47aabcf1d6f53885d3df5936 |
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Compare
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View reviewed changes
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awaiting merge
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awaiting merge
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| pythongh-133467 | https://github.com/python/cpython/issues/133467 |
| : Fix typeobject | https://github.com/StanFromIreland/cpython/commit/59e12fb335eefd03d250d1b4ddb851ad6498b018 |
| tp_base | https://github.com/StanFromIreland/cpython/commit/59e12fb335eefd03d250d1b4ddb851ad6498b018 |
| race in free threading ( | https://github.com/StanFromIreland/cpython/commit/59e12fb335eefd03d250d1b4ddb851ad6498b018 |
| pyt… | https://github.com/python/cpython/pull/140549 |
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needs backport to 3.14
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