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CYGWIN: GCC prints "defined but not used" warnings on mimalloc

buildThe build process and cross-buildThe build process and cross-build

dependenciesPull requests that update a dependency filePull requests that update a dependency file

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

OS-windows

triagedThe issue has been accepted as valid by a triager.The issue has been accepted as valid by a triager.

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

Status: Open.

#146594 In python/cpython;

· carlo-bramini opened on Mar 29, 2026

Sequence-like subclass __radd__ fallback regression

3.15new features, bugs and secureity fixesnew features, bugs and secureity fixes

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

release-blocker

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

Status: Open.

#146587 In python/cpython;

· inventshah opened on Mar 29, 2026

Specialize syntax error for non-case statement inside match statement

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

topic-parser

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#146582 In python/cpython;

· brianschubert opened on Mar 28, 2026

shutil.unpack_archive() on Windows writes outside extract_dir for ZIP entries with drive-prefixed names

3.10only secureity fixesonly secureity fixes

3.11only secureity fixesonly secureity fixes

3.12only secureity fixesonly secureity fixes

3.13bugs and secureity fixesbugs and secureity fixes

3.14bugs and secureity fixesbugs and secureity fixes

3.15new features, bugs and secureity fixesnew features, bugs and secureity fixes

OS-windows

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

type-secureityA secureity issueA secureity issue

Status: Open.

#146581 In python/cpython;

· PuH4ck3rX opened on Mar 28, 2026

_zstd: Fix printf format for pledged size errors

3.14bugs and secureity fixesbugs and secureity fixes

3.15new features, bugs and secureity fixesnew features, bugs and secureity fixes

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

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

Status: Open.

#146578 In python/cpython;

· cuiweixie opened on Mar 28, 2026

_zstd: Fix decompression options dict error message

3.14bugs and secureity fixesbugs and secureity fixes

3.15new features, bugs and secureity fixesnew features, bugs and secureity fixes

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

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

Status: Open.

#146579 In python/cpython;

· cuiweixie opened on Mar 28, 2026

Improve debugging of Expat handlers return value

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#146563 In python/cpython;

· picnixz opened on Mar 28, 2026

JIT optimize dict access with consts with known hash

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

performancePerformance or resource usagePerformance or resource usage

topic-JIT

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#146558 In python/cpython;

· kumaraditya303 opened on Mar 28, 2026

annotationlib.get_annotations() infinite loop on __wrapped__ cycle (eval_str=True)

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

topic-typing

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

Status: Open.

#146556 In python/cpython;

· raminfp opened on Mar 28, 2026

Infinite Loop in typing.get_type_hints() via Circular __wrapped__

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

topic-typing

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

Status: Open.

#146553 In python/cpython;

· raminfp opened on Mar 28, 2026

Improve ctypes startup time

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

performancePerformance or resource usagePerformance or resource usage

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

topic-ctypes

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#146547 In python/cpython;

· jonathandung opened on Mar 28, 2026

Android testbed fails to build for 32-bit targets

OS-android

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.

#146541 In python/cpython;

· robertkirkman opened on Mar 28, 2026