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test_cmd_line: test_python_legacy_windows_stdio() fails with STATUS_DLL_INIT_FAILED (hex: c0000142, dec: 3221225794)

OS-windows

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

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

Status: Open.

#150436 In python/cpython;

· vstinner opened on May 25, 2026

test_profiling.test_sampling_profiler: test_generator_not_under_consumer_arithmetic() failed on the Windows CI

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

topic-profiling

Status: Open.

#150429 In python/cpython;

· vstinner opened on May 25, 2026

ARM64 Windows Non-Debug 3.x build fails with: compiler is out of heap space

OS-windows

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

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

Status: Open.

#150400 In python/cpython;

· vstinner opened on May 25, 2026

test_pyexpat: test_large_character_data_does_not_crash() fails with TypeError on Ubuntu BigMem buildbot

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

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

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

topic-XML

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

Status: Open.

#150397 In python/cpython;

· vstinner opened on May 25, 2026

test_perf_profiler fails with: "Warning: Processed 631 events and lost 1 chunks! Check IO/CPU overload!"

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

topic-profiling

Status: Open.

#150395 In python/cpython;

· vstinner opened on May 25, 2026

test_embed: test_thread_state_ensure() failed on "AMD64 Debian root 3.15" buildbot

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

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

Status: Open.

#150391 In python/cpython;

· vstinner opened on May 25, 2026

test_perf_profiler fails on "AMD64 Arch Linux TraceRefs 3.x" buildbot: addr2line: python: could not read first record

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

topic-profiling

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

Status: Open.

#150389 In python/cpython;

· vstinner opened on May 25, 2026

test_ssl: test_connect_ex_error() hangs on "ARM64 macOS 3.x" buildbot

OS-mac

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

topic-SSL

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

Status: Open.

#150388 In python/cpython;

· vstinner opened on May 25, 2026

Enhance Cygwin support

OS-unsupported

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#149879 In python/cpython;

· vstinner opened on May 15, 2026

Add PEP 741 PyInitConfig API to the limited C API

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

topic-C-API

Status: Open.

#149163 In python/cpython;

· vstinner opened on Apr 29, 2026

test_bytes: test_free_threading_bytearray() allocates 1 GiB on free threaded build

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

topic-free-threading

Status: Open.

#148605 In python/cpython;

· vstinner opened on Apr 15, 2026

Add support for OpenSSL 4.0.0 final

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

topic-SSL

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#148600 In python/cpython;

· vstinner opened on Apr 15, 2026