_tkinter PythonCmd fails to acquire GIL

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
desktop

Research direction

Start by reproducing the failure with simple_tk_demo.py, then compare the behavior with qt_tk_demo.py. Review tstate_acquire.diff and the existing pull requests #19178 and #22453; done means the minimal examples no longer trigger the reported GIL-acquisition crash.

Written by the indexing model from the issue text.

Description

3.10 3.8 (EOL) 3.9 (EOL) topic-tkinter type-crash
BPO 40075
Nosy @pfmoore, @tjguk, @zware, @serhiy-storchaka, @zooba, @speleo3, @E-Paine
PRs
  • python/cpython#19178
  • python/cpython#22453
    		•
    Files
  • qt_tk_demo.py: Minimal example
  • simple_tk_demo.py: Minimal example with only stdlib
  • tstate_acquire.diff
    		•

    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 2020-03-26.12:16:09.801>
labels = ['3.8', '3.10', 'expert-tkinter', '3.9', 'type-crash']
title = '_tkinter PythonCmd fails to acquire GIL'
updated_at = <Date 2020-09-29.17:45:58.334>
user = 'https://github.com/speleo3'

    bugs.python.org fields:

    activity = <Date 2020-09-29.17:45:58.334>
actor = 'speleo3'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tkinter']
creation = <Date 2020-03-26.12:16:09.801>
creator = 'speleo3'
dependencies = []
files = ['49002', '49349', '49350']
hgrepos = []
issue_num = 40075
keywords = ['patch']
message_count = 8.0
messages = ['365064', '374567', '374587', '374602', '374608', '377672', '377675', '377676']
nosy_count = 7.0
nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'serhiy.storchaka', 'steve.dower', 'speleo3', 'epaine']
pr_nums = ['19178', '22453']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue40075'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

    Dominant language
    Python
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