Description

JelleZijlstra

opened on Mar 1, 2026

Issue body actions

Bug report

Bug description:

I found a handful of reference leaks in the core using Codex. PR incoming.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

• gh-145376: Fix various reference leaks #145377
• gh-145376: Fix various reference leaks objects and modules #145385
• gh-145376: Fix reference leaks in _collectionsmodule.c #145421
• gh-145376: Fix null pointer deref in md5module.c #145422
• gh-145376: Avoid reference leaks in failure path of _functoolsmodule.c method partial_new #145423
• gh-145376: Fix refleak in unusual error path in BaseExceptionGroup_new #145474
• gh-145376: Fix refleak and null pointer deref in unusual error path of datetime module #145476
• gh-145376: Fix refleak in error path of time_tzset #145477
• gh-145376: Fix reference leak in _lprof.c #145539
• gh-145376: Fix refleak in _queuemodule.c out-of-memory path #145543
• gh-145376: Fix various refleaks Objects/ #145609
• [3.14] gh-145376: Fix crashes in md5module.c and hmacmodule.c (GH-145422) #145610
• [3.13] gh-145376: Fix crashes in md5module.c (GH-145422) #145611
• [3.13] gh-145376: Fix refleak in queuemodule.c out-of-memory path (GH-145543) #145621
• [3.14] gh-145376: Fix refleak in queuemodule.c out-of-memory path (GH-145543) #145622
• gh-145376: Fix refleaks and double decref for code in Python/ #145666
• gh-145376: Fix _cursesmodule.c build on FreeBSD/macOS #145669
• gh-145376: Fix refleak bug and pointer type bug in Parser/ #145684
• [3.14] gh-145376: Fix various reference leaks (GH-145377) #145712
• gh-145376: Fix GC tracking in structseq.__replace__ #145820
• [3.14] gh-145376: Fix GC tracking in structseq.__replace__ (GH-145820) #145922
• [3.13] gh-145376: Fix GC tracking in structseq.__replace__ (GH-145820) #145924
• [3.13] gh-145376: Fix various reference leaks (GH-145377) #148661

Reacted by An Long

Activity

1. JelleZijlstra

   added

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

   on Mar 1, 2026
2. JelleZijlstra

   added 2 commits that reference this issue on Mar 1, 2026

   pythongh-145376: Fix various reference leaks

   9ef7a62

   pythongh-145376: Fix various reference leaks

   c29f2ca
3. StanFromIreland

   added

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

   on Mar 1, 2026
4. encukou

   added 4 commits that reference this issue on Mar 3, 2026

   gh-145376: Fix various reference leaks (GH-145377)

   bd13cc0

   gh-145376: Fix refleak in error path of time_tzset (GH-145477)

   3fe7849

   gh-145376: Avoid reference leaks in failure path of _functoolsmodule.…

   f9dac4e

   gh-145376: Fix refleak in unusual error path in BaseExceptionGroup_new (

   18aec59
5. vstinner

   added a commit that references this issue on Mar 4, 2026

   gh-145376: Fix reference leaks in deque (#145421)

   1aa1d76
6. encukou

   added a commit that references this issue on Mar 5, 2026

   gh-145376: Fix refleak and null pointer deref in unusual error path o…

   0eaf260
7. picnixz

   added a commit that references this issue on Mar 6, 2026

   gh-145376: Fix crashes in `md5module.c` and `hmacmodule.c` (#145422)

   c1d7768
8. miss-islington

   added a commit that references this issue on Mar 6, 2026

   pythongh-145376: Fix crashes in `md5module.c` and `hmacmodule.c` (pyt…

   bbc0db7
9. eendebakpt

   added a commit that references this issue on Mar 6, 2026

   pythongh-145376: Fix crashes in md5module.c

   3b1aa5f
10. vstinner

    added 2 commits that reference this issue on Mar 6, 2026

    [3.14] gh-145376: Fix crashes in `md5module.c` and `hmacmodule.c` (GH…

    c23dd52

    [3.13] gh-145376: Fix crashes in md5module.c (GH-145422) (#145611)

    ae7206e
11. 22 remaining items
12. ljfp

    added 14 commits that reference this issue on Apr 25, 2026

    pythongh-145376: Fix refleak in error path of time_tzset (pythonGH-14…

    3d0ab00

    pythongh-145376: Avoid reference leaks in failure path of _functoolsm…

    bf76c33

    pythongh-145376: Fix refleak in unusual error path in BaseExceptionGr…

    51e2a10

    pythongh-145376: Fix reference leaks in deque (python#145421)

    a2bebd7

    pythongh-145376: Fix refleak and null pointer deref in unusual error …

    a56065d

    pythongh-145376: Fix crashes in `md5module.c` and `hmacmodule.c` (pyt…

    fb9693d

    pythongh-145376: Fix refleak in `queuemodule.c` out-of-memory path (p…

    684e45f

    pythongh-145376: Fix reference leaks in _lprof.c (python#145539)

    0a85ed2

    pythongh-145376: Fix various refleaks in Objects/ (python#145609)

    0b43869

    pythongh-145376: Fix various reference leaks in Objects/ and Modules/ (…

    7ddeb40

    pythongh-145376: Fix _cursesmodule.c build on FreeBSD/macOS (python#1…

    77a4a16

    pythongh-145376: Fix refleaks and double decref for code in Python/ (p…

    8232287

    pythongh-145376: Fix refleak & pointer type bug in uncommon code path…

    6aa8dff

    pythongh-145376: Fix GC tracking in `structseq.__replace__` (python#1…

    245f2ac
13. StanFromIreland

    added a commit that references this issue on May 12, 2026

    [3.13] gh-145376: Fix various reference leaks (GH-145377) (#148661)

    ea8c3e0

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