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GeezerVison is showing github.com — Сrash when deleting deeply recursive iterator wrappers · Issue #61502 · python/cpython

Сrash when deleting deeply recursive iterator wrappers #61502

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Сrash when deleting deeply recursive iterator wrappers#61502
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serhiy-storchaka
Labels
extension-modulesC modules in the Modules dirC modules in the Modules dirtype-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Description

@serhiy-storchaka
serhiy-storchaka
opened on Feb 26, 2013
Issue body actions
BPO 17300
Nosy @rhettinger, @serhiy-storchaka
Superseder
  • bpo-14010: deeply nested itertools objects segfault
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = 'https://github.com/serhiy-storchaka'
closed_at = <Date 2013-02-26.10:40:16.473>
created_at = <Date 2013-02-26.10:28:15.064>
labels = ['extension-modules', 'type-crash']
title = '\xd0\xa1rash when deleting deeply recursive iterator wrappers'
updated_at = <Date 2013-02-26.10:40:16.472>
user = 'https://github.com/serhiy-storchaka'

    bugs.python.org fields:

    activity = <Date 2013-02-26.10:40:16.472>
actor = 'serhiy.storchaka'
assignee = 'serhiy.storchaka'
closed = True
closed_date = <Date 2013-02-26.10:40:16.473>
closer = 'serhiy.storchaka'
components = ['Extension Modules']
creation = <Date 2013-02-26.10:28:15.064>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 17300
keywords = []
message_count = 3.0
messages = ['183041', '183042', '183043']
nosy_count = 2.0
nosy_names = ['rhettinger', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '14010'
type = 'crash'
url = 'https://bugs.python.org/issue17300'
versions = ['Python 2.7', 'Python 3.2', 'Python 3.3', 'Python 3.4']

    Activity

    1. serhiy-storchaka commented on Feb 26, 2013

      @serhiy-storchaka
      serhiy-storchaka
      on Feb 26, 2013
      MemberAuthor
      More actions

      http://permalink.gmane.org/gmane.comp.python.ideas/19669

      >>> from itertools import islice, count
>>> it = count()
>>> for i in range(1000000):
...     it = islice(it, 0)
... 
>>> del it
Segmentation fault

      This looks very similar to the crash in tee() (bpo-13454).

    2. serhiy-storchaka
      self-assigned this
      on Feb 26, 2013
    3. serhiy-storchaka
      added
      extension-modulesC modules in the Modules dirC modules in the Modules dir
      type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump
      on Feb 26, 2013

    4. serhiy-storchaka commented on Feb 26, 2013

      @serhiy-storchaka
      serhiy-storchaka
      on Feb 26, 2013
      MemberAuthor
      More actions

      And same issue with filter:

      >>> it = iter([])
>>> for i in range(1000000):
...     it = filter(None, it)
... 
>>> del it
Segmentation fault
    5. serhiy-storchaka
      changed the title [-]Сrash when deleting deeply recursive islice()[/-] [+]Сrash when deleting deeply recursive iterator wrappers[/+] on Feb 26, 2013

    6. serhiy-storchaka commented on Feb 26, 2013

      @serhiy-storchaka
      serhiy-storchaka
      on Feb 26, 2013
      MemberAuthor
      More actions

      Aha, this is a duplicate of bpo-14010.

    7. serhiy-storchaka
      closed this as completedon Feb 26, 2013
    8. ezio-melotti
      transferred this issue fromon Apr 10, 2022
    9. picnixz
      closed this as a duplicateof deeply nested itertools objects segfault #58218 on Aug 18, 2025
    10. picnixz
      marked Segmentation fault in Python 3.13 when chaining deep filter() iterators #137894 as a duplicate of this issue on Aug 18, 2025
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    • @serhiy-storchaka
      serhiy-storchaka

    Labels

    extension-modulesC modules in the Modules dirC modules in the Modules dirtype-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

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