python / python/cpython

GenericPyCData_new does not invoke new or init

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3.7 (EOL) 3.8 (EOL) 3.9 (EOL) topic-ctypes type-bug
Dominant language
Python
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Description

BPO 38860
Nosy @aeros, @LewisGaul, @rebeccamorgan, @b1tninja
Files
  • ctypesnew.py: Example of Structure subclass that is instantiated without new or init
  • 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 = None
    closed_at = None
    created_at = <Date 2019-11-20.02:34:04.100>
    labels = ['3.8', 'ctypes', 'type-bug', '3.7', '3.9']
    title = 'GenericPyCData_new does not invoke new or init'
    updated_at = <Date 2020-02-19.04:46:34.580>
    user = 'https://github.com/b1tninja'
    

    bugs.python.org fields:

    activity = <Date 2020-02-19.04:46:34.580>
    actor = 'aeros'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['ctypes']
    creation = <Date 2019-11-20.02:34:04.100>
    creator = 'b1tninja'
    dependencies = []
    files = ['48723']
    hgrepos = []
    issue_num = 38860
    keywords = []
    message_count = 7.0
    messages = ['357022', '358223', '358265', '358276', '360452', '362210', '362248']
    nosy_count = 4.0
    nosy_names = ['aeros', 'LewisGaul', 'beccamorgan', 'b1tninja']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue38860'
    versions = ['Python 2.7', 'Python 3.5', 'Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9']
    

    Contributor guide

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    First steps

    1. Read the whole issue, then the project's contributing guide.
    2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
    3. Fork the repository and make your change on a branch.
    4. Open a pull request that references the issue number.

    Research direction

    Start with the uploaded ctypesnew.py example and the seven-message issue discussion to understand the reported construction behavior. Identify the relevant CPython ctypes entry point and establish regression coverage; done means GenericPyCData_new consistently invokes new or init as intended.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    backend
    Issue type
    Bug
    Difficulty
    4/5
    Estimated time
    3-5 days
    Activity status
    Stale
    Clarity
    Needs clarification
    Newbie friendliness
    30/100

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