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CYGWIN: warning on missing secure randomness function

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#148461 In python/cpython;

· carlo-bramini opened on Apr 12, 2026

Memory leak when use lru_cache

pendingThe issue will be closed if no feedback is providedThe issue will be closed if no feedback is provided

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#148459 In python/cpython;

· tanaliko opened on Apr 12, 2026

Bug: abc.register will change the tp_flags but don't update the type_version.

extension-modulesC modules in the Modules dirC modules in the Modules dir

topic-JIT

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#148450 In python/cpython;

· cocolato opened on Apr 12, 2026

BTPROTO_L2CAP not exposed on Windows despite Winsock supporting it

extension-modulesC modules in the Modules dirC modules in the Modules dir

OS-windows

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148449 In python/cpython;

· Leclowndu93150 opened on Apr 12, 2026

xml.sax expatreader: entity stack not cleaned up after error in external_entity_ref()

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

topic-XML

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#148448 In python/cpython;

· WYSIATI opened on Apr 12, 2026

Use "zero of any numeric type" instead of "numeric zero of all types" in "Truth Value Testing" section

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#148444 In python/cpython;

· siliconforks opened on Apr 12, 2026

Recursive _testcapi.pyobject_vectorcall() aborts with fatal stack overflow instead of raising RecursionError in a small-stack thread

pendingThe issue will be closed if no feedback is providedThe issue will be closed if no feedback is provided

Status: Open.

#148443 In python/cpython;

· ashm-dev opened on Apr 12, 2026

list's rich comparison has a race condition for non-trivial __eq__ and may return an incorrect result

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#148442 In python/cpython;

· KowalskiThomas opened on Apr 12, 2026

Heap Buffer Overflow in pyexpat Character Data Buffering

extension-modulesC modules in the Modules dirC modules in the Modules dir

topic-XML

type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Status: Open.

#148441 In python/cpython;

· scovetta opened on Apr 12, 2026

JIT: _Py_uop_sym_set_recorded_type may receive a non-type at trace optimization time.

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

topic-JIT

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#148439 In python/cpython;

· Fidget-Spinner opened on Apr 12, 2026

JIT: _INIT_CALL_BOUND_METHOD loses too much information/_RECORD_BOUND_METHOD not implemented

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

topic-JIT

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148438 In python/cpython;

· Fidget-Spinner opened on Apr 12, 2026

Buffer requests - itemsize, format, and PyBUF_SIMPLE

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-C-API

Status: Open.

#148431 In python/cpython;

· davidhewitt opened on Apr 12, 2026