Search results

_interpchannels: missing PyErr_NoMemory() causes SystemErroron OOM in {create,close}()

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

topic-subinterpreters

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

Status: Open.

#150213 In python/cpython;

· lpyu001 opened on May 22, 2026

pyconfig.h string values are double-quoted in sysconfigdat

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

topic-sysconfig

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

Status: Open.

#150208 In python/cpython;

· stefanor opened on May 22, 2026

Allocation failures generated in _PyTokenizer_FromUTF8 lead to SystemError/abort()s

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

topic-parser

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

Status: Open.

#150207 In python/cpython;

· stestagg opened on May 21, 2026

Tail call interpreter makes test_gdb fail on -O0 optimization level

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.

#150206 In python/cpython;

· stratakis opened on May 21, 2026

Literal idiom for empty set ast.unparse symmetry

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#150204 In python/cpython;

· gesslerpd opened on May 21, 2026

Test failures on no-GIL interpreter macOS 26 ARM64 with UBSan

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

Status: Open.

#150195 In python/cpython;

· clin1234 opened on May 21, 2026

Data race in test_ssl.test_sni_callback_race

testsTests in the Lib/test dirTests in the Lib/test dir

topic-free-threading

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

Status: Open.

#150191 In python/cpython;

· colesbury opened on May 21, 2026

abi3-abi3t documentation update

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#150187 In python/cpython;

· hydrogen-mvm opened on May 21, 2026

hamt.c: sub_node leaked in bitmap_assoc and bitmap_without

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.

#150178 In python/cpython;

· lpyu001 opened on May 21, 2026

shutil._BZ2_SUPPORTED is always True under lazy_imports=all even if it is not supported

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new features, bugs and security fixesnew features, bugs and security fixes

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

topic-lazy-imports

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

Status: Open.

#150167 In python/cpython;

· DavidCEllis opened on May 20, 2026

sysconfig variable impermanence in virtual environment when cross-compiling

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

topic-sysconfig

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

Status: Open.

#150162 In python/cpython;

· hetmankp opened on May 20, 2026

Missing critical section for PyDict_Next in _pickle.c

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

topic-free-threading

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

Status: Open.

#150157 In python/cpython;

· KowalskiThomas opened on May 20, 2026