Race conditions in Tkinter with non-threaded Tcl

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BPO	33257
Nosy	@terryjreedy, @roseman, @serhiy-storchaka, @native-api
PRs	python/cpython#6444 python/cpython#6972 python/cpython#6990
Files	TkinterCrash2-2.py: Py2 version, crashing TkinterCrash3-2-2.py: Py3 version, working TkinterHanders.py TkinterHanders3.py 0001-Build-non-threaded-debug-Tcl.zip: For testing only! Build master (win64) with nonthreaded debug Tcl 0001-build-2.7-with-threaded-Tcl.patch: For testing only! Build 2.7 (win64) with threaded Tcl test_threads_tk.py: reproduce hang when creating multiple Tk's

^{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 2018-04-10.16:41:09.432>
labels = ['3.8', '3.7', 'expert-tkinter', 'type-crash']
title = 'Race conditions in Tkinter with non-threaded Tcl'
updated_at = <Date 2018-10-27.23:10:44.251>
user = 'https://github.com/native-api'

bugs.python.org fields:

activity = <Date 2018-10-27.23:10:44.251>
actor = 'terry.reedy'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tkinter']
creation = <Date 2018-04-10.16:41:09.432>
creator = 'Ivan.Pozdeev'
dependencies = []
files = ['47529', '47530', '47536', '47561', '47565', '47566', '47620']
hgrepos = []
issue_num = 33257
keywords = ['patch']
message_count = 29.0
messages = ['315172', '315271', '315283', '315285', '315286', '315304', '315878', '315899', '316087', '316089', '316092', '316093', '316095', '316096', '316097', '316098', '316099', '316100', '316103', '316105', '316106', '316241', '316265', '316418', '316451', '316689', '316921', '317875', '328662']
nosy_count = 5.0
nosy_names = ['terry.reedy', 'markroseman', 'PythonInTheGrass', 'serhiy.storchaka', 'Ivan.Pozdeev']
pr_nums = ['6444', '6972', '6990']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue33257'
versions = ['Python 2.7', 'Python 3.6', 'Python 3.7', 'Python 3.8']

Inizia con i riproduttori forniti TkinterCrash2-2.py, TkinterCrash3-2-2.py e test_threads_tk.py, quindi leggi TkinterHanders.py e TkinterHanders3.py. Esamina le pull request esistenti 6444, 6972 e 6990 prima di apportare modifiche. L’issue è in revisione della patch, quindi il completamento richiede di risolvere le race condition segnalate e validare i casi di riproduzione.

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