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Issues list
Update HOWTO to reflect change in CIBW option docsDocumentation in the Doc dir topic-free-threading
#134595 openedMay 23, 2025 by3willows
The C API needs to protect state that can be deleted by finalization 3.13bugs and security fixes 3.14bugs and security fixes 3.15new features, bugs and security fixes topic-C-API topic-free-threading topic-subinterpreters triagedThe issue has been accepted as valid by a triager.
#134307 openedMay 20, 2025 byZeroIntensity
gh-134043: add
_PyObject_GetMethodStackRef
awaiting core review skip news topic-free-threading #134044 openedMay 15, 2025 bykumaraditya303Loading…
use stackrefs in(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-featureA feature request or enhancement
_PyObject_GetMethod
and calling APIs interpreter-core #134043 openedMay 15, 2025 bykumaraditya303
Expose(Objects, Python, Grammar, and Parser dirs) topic-C-API topic-free-threading type-featureA feature request or enhancement
PyMutex_IsLocked
in the public C API interpreter-core #134009 openedMay 14, 2025 byhawkinsp
Make generator methods(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-featureA feature request or enhancement
gen_set_name
andgen_set_qualname
thread-safe in free-threaded builds interpreter-core #133931 openedMay 12, 2025 byefimov-mikhail
gh-132380: Use unicode hash/compare for the mcache. awaiting core review performancePerformance or resource usage topic-free-threading
#133669 openedMay 8, 2025 bynaschemeLoading…
Data races in typeobject.c for type structure updates interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-bugAn unexpected behavior, bug, or error
#133467 openedMay 5, 2025 bynascheme
Expose(Objects, Python, Grammar, and Parser dirs) topic-C-API topic-free-threading type-featureA feature request or enhancement
_PyCriticalSection_BeginMutex
as a public API interpreter-core #133296 openedMay 2, 2025 byhawkinsp
gh-127266: avoid data races when updating type slots v2 awaiting merge topic-free-threading type-bugAn unexpected behavior, bug, or error
#133177 openedApr 29, 2025 bynaschemeLoading…
Make the JIT thread-safe interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading topic-JIT
#133171 openedApr 29, 2025 bybrandtbucher
7 tasks
Memory keeps increasing with fixed-size dict during multi-threaded set/delete in 3.13.3t interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-bugAn unexpected behavior, bug, or error
#133136 openedApr 29, 2025 byYiling-J
Deadlock in test_opcache with gh-131174 applied interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-bugAn unexpected behavior, bug, or error
#133130 openedApr 29, 2025 bynascheme
GC performance regression in free threaded build interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-bugAn unexpected behavior, bug, or error
#132917 openedApr 25, 2025 bygptsarthak
Improve Py_mod_multiple_interpreters and Py_mod_gil Usability interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-C-API topic-free-threading topic-subinterpreters type-featureA feature request or enhancement
#132861 openedApr 23, 2025 byericsnowcurrently
PyEval_SetProfileAllThreads is racy under free-threading 3.13bugs and security fixes 3.14bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-bugAn unexpected behavior, bug, or error
#132817 openedApr 22, 2025 byhawkinsp
copy.copy and copy.deepcopy scale poorly with free-threading performancePerformance or resource usage stdlibPython modules in the Lib dir topic-free-threading type-bugAn unexpected behavior, bug, or error
#132657 openedApr 17, 2025 byeendebakpt
Excessive QSBR memory usage when delay freeing large blocks. interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-bugAn unexpected behavior, bug, or error
#132519 openedApr 14, 2025 bytom-pytel
gh-132336: Only mark slow path functions used by the interpreter loop as noinline in free-threaded builds awaiting core review interpreter-core(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage skip news topic-free-threading
#132424 openedApr 12, 2025 bympageLoading…
Lock contention inside(Objects, Python, Grammar, and Parser dirs) performancePerformance or resource usage topic-free-threading type-featureA feature request or enhancement
_PyType_LookupRef
interpreter-core #132380 openedApr 11, 2025 bynascheme
Concurrent deallocation of threads while calling(Objects, Python, Grammar, and Parser dirs) topic-C-API topic-free-threading type-crashA hard crash of the interpreter, possibly with a core dump
PyEval_SetTrace
interpreter-core #132296 openedApr 9, 2025 bydevdanzin
Possible data race between split_keys_entry_added and dict_dict_merge under free-threading, 3.13 3.13bugs and security fixes 3.14bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-bugAn unexpected behavior, bug, or error
#132245 openedApr 7, 2025 byvfdev-5
Data race between update_one_slot and PyObject_Hash under free-threading 3.13bugs and security fixes 3.14bugs and security fixes interpreter-core(Objects, Python, Grammar, and Parser dirs) topic-free-threading type-bugAn unexpected behavior, bug, or error
#132214 openedApr 7, 2025 byvfdev-5
gh-129069: make list ass_slice and memory_repeat safe in free-threading awaiting review topic-free-threading
#131882 openedMar 29, 2025 bytom-pytelLoading…
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