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sysconfig.get_config_var("CXX") now sometimes records an absolute path

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

Status: Open.

#151547 In python/cpython;

· jameslamb opened on Jun 16, 2026

Deallocating highly nested list can cause stack overflow on Alpine Linux (musl)

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

Status: Open.

#151546 In python/cpython;

· vstinner opened on Jun 16, 2026

[CVE-2026-12003] In-tree search paths can be enabled without modifying install directory

3.11only security fixesonly security fixes

3.12only security fixesonly security fixes

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

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

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

type-securityA security issueA security issue

Status: Open.

#151544 In python/cpython;

· zooba opened on Jun 16, 2026

test_threading: ThreadingIteratorToolsTests crash with segfault on Alpine Linux (musl)

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.

#151542 In python/cpython;

· vstinner opened on Jun 16, 2026

test.test_asyncio.test_base_events failing on windows due to non-integer fileno() return

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

Status: Open.

#151540 In python/cpython;

· neek78 opened on Jun 16, 2026

Constructive Feedback on Python 3.14.x Installation Path Synchronization in Windows11

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

Status: Open.

#151539 In python/cpython;

· parsaesmaili038 opened on Jun 16, 2026

RemoteUnwinder.get_async_stack_trace() crashes with a C stack overflow on a deeply nested awaited_by graph instead of raising

Status: Open.

#151535 In python/cpython;

· tonghuaroot opened on Jun 16, 2026

xmlrpc.client.dumps() skips argument validation when Python is run with -O

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#151532 In python/cpython;

· zainnadeem786 opened on Jun 16, 2026

Add csv writer tests for QUOTE_STRINGS and QUOTE_NOTNULL edge cases

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#151526 In python/cpython;

· doma17 opened on Jun 16, 2026

instrumentation.c: Use-after-Py_DECREF comparison in call_one_instrument

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.

#151524 In python/cpython;

· lpyu001 opened on Jun 16, 2026

Optimizations for random functions and methods returning ints or bytes

performancePerformance or resource usagePerformance or resource usage

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#151520 In python/cpython;

· zahlman opened on Jun 16, 2026

test_posix._test_all_chown_common ignores the effective gid when checking group-0 membership

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.

#151519 In python/cpython;

· itamaro opened on Jun 15, 2026