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Title: [WIP] gh-151818: Add a test on CALL_LIST_APPEND error path by vstinner · Pull Request #152117 · python/cpython · GitHub

Open Graph Title: [WIP] gh-151818: Add a test on CALL_LIST_APPEND error path by vstinner · Pull Request #152117 · python/cpython

X Title: [WIP] gh-151818: Add a test on CALL_LIST_APPEND error path by vstinner · Pull Request #152117 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: Add _PyList_Capacity() internal function to _testinternalcapi. Add Modules/_testinternalcapi/list.c file. Issue: Double free / use-after-free in list.append() when the list grows under MemoryEr...

X Description: Add _PyList_Capacity() internal function to _testinternalcapi. Add Modules/_testinternalcapi/list.c file. Issue: Double free / use-after-free in list.append() when the list grows under MemoryEr...

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Jun 24, 2026https://github.com/python/cpython/pull/152117#issue-4737773745
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Double free / use-after-free in list.append() when the list grows under MemoryError (_CALL_LIST_APPEND) #151818https://github.com/python/cpython/issues/151818
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Double free / use-after-free in list.append() when the list grows under MemoryError (_CALL_LIST_APPEND) #151818 https://github.com/python/cpython/issues/151818
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CPython crashes on memory-allocation failure (OOM): 35 findings (4 dups → 31 distinct) #151763 https://github.com/python/cpython/issues/151763
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