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array iterator segfault on __setstate__() when exhausted #128961
Description
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]
Activity
pythongh-128961: fix array iterator segfault on __setstate__
tom-pytel commentedon Jan 17, 2025
Ping @erlend-aasland
test raise StopIteration after pythongh-128961
gh-128961: Fix exhausted array iterator crash in __setstate__() (#128962
pythongh-128961: Fix exhausted array iterator crash in __setstate__() (…
pythongh-128961: Fix exhausted array iterator crash in __setstate__() (…
erlend-aasland commentedon Jan 18, 2025
Fixed with:
__setstate__#128962Auto-merge enabled for the backports. Closing as resolved. Thanks for identifying the bug and fixing it, Tomasz!
erlend-aasland commentedon Jan 18, 2025
For the record: this was discovered while the OP was working on #128943.
[3.12] gh-128961: Fix exhausted array iterator crash in __setstate__() (
[3.13] gh-128961: Fix exhausted array iterator crash in __setstate__() (
pythongh-128961: Fix exhausted array iterator crash in __setstate__() (…