[pull] main from python:main#755
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pull[bot] merged 5 commits intotj-python:mainfrom Feb 12, 2026
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…4733) Remove spurious Py_DECREF on borrowed ref in LOAD_GLOBAL specialization _PyDict_LookupIndexAndValue() returns a borrowed reference via _Py_dict_lookup(), but specialize_load_global_lock_held() called Py_DECREF(value) on it when bailing out for lazy imports. Each time the adaptive counter fired while a lazy import was still in globals, this stole one reference from the dict's object. With 8+ threads racing through LOAD_GLOBAL during concurrent lazy import resolution, enough triggers accumulated to drive the refcount to zero while the dict and other threads still referenced the object, causing use-after-free.
Replace windows-2022 with windows-2025.
Python.h now also includes <string.h> in the limited C API version 3.11 and newer to fix the Py_CLEAR() macro which uses memcpy(). Add a Py_CLEAR() test in test_cext. Modify also _Py_TYPEOF to use C23 typeof() if available.
…7281) Lookup for CJK ideograms and Hangul syllables is now case-insensitive, as is the case for other character names.
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