Description

Wulian233

opened on Apr 5, 2026

Issue body actions

Bug report

Bug description:

Parent: #146102

When PyDict_GetItemWithError returns NULL due to error (not missing key), code falls through to PyLong_AsSsize_t(NULL) at line 37 → segfault. Affects PyStructSequence_New, structseq_new_impl, etc.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-148119: Refactor get_type_attr_as_size to improve error handling in structseq.c #148120

Activity

1. Wulian233

   added

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

   on Apr 5, 2026
2. Wulian233

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

   pythongh-148119: Refactor `get_type_attr_as_size` to improve error ha…

   c08c7b1
3. aisk

   added a parent issue on Apr 5, 2026

   • Umbrella issue: bugs found using cpython-review-toolkit #146102
4. aisk

   added

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

   on Apr 5, 2026
5. kumaraditya303

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

   gh-148119: Refactor `get_type_attr_as_size` to improve error handling…

   69f5162
6. kumaraditya303

   closed this as completedon Apr 6, 2026
7. ljfp

   added a commit that references this issue on Apr 25, 2026

   pythongh-148119: Refactor `get_type_attr_as_size` to improve error ha…

   e579626

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