Description

tom-pytel

opened on Jan 17, 2025

Issue body actions

Crash report

What happened?

>>> import array
... a = array.array('i')
... it = iter(a)
... list(it)
... it.__setstate__(0)
... 
Segmentation fault (core dumped)

This goes back at least to py 3.8 (checked on that one), PR fix incoming.

CPython versions tested on:

3.14

Operating systems tested on:

Linux

Output from running 'python -VV' on the command line:

Python 3.14.0a4+ (heads/arrayiter:7d97bc8eda, Jan 17 2025, 16:24:27) [GCC 11.4.0]

Linked PRs

• gh-128961: Fix exhausted array iterator crash in __setstate__ #128962
• [3.13] gh-128961: Fix exhausted array iterator crash in __setstate__() (GH-128962) #128976
• [3.12] gh-128961: Fix exhausted array iterator crash in __setstate__() (GH-128962) #128977

Activity

1. tom-pytel

   added

   type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

   on Jan 17, 2025
2. tom-pytel

   added a commit that references this issue on Jan 17, 2025

   pythongh-128961: fix array iterator segfault on __setstate__

   7831074
3. tom-pytel commented on Jan 17, 2025

   

   tom-pytel

   on Jan 17, 2025

   ContributorAuthor

   More actions

   Ping @erlend-aasland
4. tom-pytel

   added a commit that references this issue on Jan 17, 2025

   test raise StopIteration after pythongh-128961

   8eab735
5. picnixz

   added

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

   on Jan 18, 2025
6. erlend-aasland

   added a commit that references this issue on Jan 18, 2025

   gh-128961: Fix exhausted array iterator crash in __setstate__() (#128962

   4dade05
7. miss-islington

   added 2 commits that reference this issue on Jan 18, 2025

   pythongh-128961: Fix exhausted array iterator crash in __setstate__() (…

   29cbdab

   pythongh-128961: Fix exhausted array iterator crash in __setstate__() (…

   bf59715
8. erlend-aasland commented on Jan 18, 2025

   

   erlend-aasland

   on Jan 18, 2025

   Contributor

   More actions

   Fixed with:

   • gh-128961: Fix exhausted array iterator crash in __setstate__ #128962
   • [3.13] gh-128961: Fix exhausted array iterator crash in __setstate__() (GH-128962) #128976
   • [3.12] gh-128961: Fix exhausted array iterator crash in __setstate__() (GH-128962) #128977

   Auto-merge enabled for the backports. Closing as resolved. Thanks for identifying the bug and fixing it, Tomasz!
9. erlend-aasland

   closed this as completedon Jan 18, 2025
10. erlend-aasland commented on Jan 18, 2025

    

    erlend-aasland

    on Jan 18, 2025

    Contributor

    More actions

    For the record: this was discovered while the OP was working on #128943.
11. erlend-aasland

    added 2 commits that reference this issue on Jan 18, 2025

    [3.12] gh-128961: Fix exhausted array iterator crash in __setstate__() (

    405f6d7

    [3.13] gh-128961: Fix exhausted array iterator crash in __setstate__() (

    c75894a
12. srinivasreddy

    added a commit that references this issue on Jan 21, 2025

    pythongh-128961: Fix exhausted array iterator crash in __setstate__() (…

    e0f3786
13. serhiy-storchaka

    added this to Struct, memoryview and array issues 🏗️on Jul 13, 2026
14. github-project-automation

    moved this to Todo in Struct, memoryview and array issues 🏗️on Jul 13, 2026
15. github-project-automation

    moved this from Todo to Done in Struct, memoryview and array issues 🏗️on Jul 13, 2026

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