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Assertion failure in Objects/rangeobject.c compute_range_length: Assertion PyLong_Check(start)' failed #141312

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Assertion failure in Objects/rangeobject.c compute_range_length: Assertion PyLong_Check(start)' failed#141312
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sergey-miryanov
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3.13only security fixes3.14bugs and security fixes3.15bugs and security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)type-bugAn unexpected behavior, bug, or error

Description

@YuanchengJiang
YuanchengJiang
opened on Nov 9, 2025

Bug report

Bug description:

import pickle

for proto in range(pickle.HIGHEST_PROTOCOL + 1):
    it = iter(range(0x80000000 ** 32 + -(2**15)))
    it.__setstate__(2 ** -(2**15) + 1)
    d = pickle.dumps(it, proto)
python: ../Objects/rangeobject.c:243: compute_range_length: Assertion `PyLong_Check(start)' failed.
Aborted (core dumped)

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

Activity

  1. YuanchengJiang
    added
    type-bugAn unexpected behavior, bug, or error
    on Nov 9, 2025
  2. picnixz
    added
    interpreter-core(Objects, Python, Grammar, and Parser dirs)
    on Nov 9, 2025

  3. sergey-miryanov commented on Nov 9, 2025

    @sergey-miryanov
    sergey-miryanov
    on Nov 9, 2025
    Contributor

    Working on it

  4. sergey-miryanov
    self-assigned this
    on Nov 9, 2025
  5. efimov-mikhail
    added
    3.13only security fixes
    3.14bugs and security fixes
    3.15bugs and security fixes
    on Nov 14, 2025
  6. serhiy-storchaka
    added a commit that references this issue on Nov 14, 2025

    GH-141312: Allow only integers to longrangeiter_setstate state (GH-14…

    10bec7c
  7. miss-islington
    added a commit that references this issue on Nov 14, 2025

    pythonGH-141312: Allow only integers to longrangeiter_setstate state (p…

    d0fb254
  8. sergey-miryanov
    added a commit that references this issue on Nov 14, 2025

    [3.13] pythonGH-141312: Allow only integers to longrangeiter_setstate…

    9d8a3b7
  9. serhiy-storchaka
    added a commit that references this issue on Nov 15, 2025

    [3.13] GH-141312: Allow only integers to longrangeiter_setstate state (…

    cbeada9

  10. serhiy-storchaka commented on Nov 15, 2025

    @serhiy-storchaka
    serhiy-storchaka
    on Nov 15, 2025
    Member

    Thank you for your report @YuanchengJiang and your PR @sergey-miryanov.

  11. serhiy-storchaka
    closed this as completedon Nov 15, 2025

  12. efimov-mikhail commented on Nov 15, 2025

    @efimov-mikhail
    efimov-mikhail
    on Nov 15, 2025
    Member

    @serhiy-storchaka I should notice that 3.14 backport was not merged.

  13. serhiy-storchaka
    added a commit that references this issue on Nov 15, 2025

    [3.14] GH-141312: Allow only integers to longrangeiter_setstate state (…

    79c136f
  14. StanFromIreland
    added a commit that references this issue on Dec 6, 2025

    pythonGH-141312: Allow only integers to longrangeiter_setstate state (p…

    9c77a42
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3.13only security fixes3.14bugs and security fixes3.15bugs and security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)type-bugAn unexpected behavior, bug, or error

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