New submission from William Schwartz <wkschwa...@gmail.com>:
I don't have an automated test at this time, but here's how to get os.kill to
raise SystemError. I did this on Windows 10 version 20H2 (build 19042.746) with
Pythons 3.7.7, 3.8.5, and 3.9.1. os_kill_impl at Modules/posixmodule.c:7833
does not appear to have been modified recently (but I haven't checked its
transitive callees), so I imagine you can get the same behavior from os.kill on
Python 3.10.
1. Open two consoles, A and B. (I'm using tabs in Windows Terminal, if that
matters.)
2. In console A, type but DO NOT EXECUTE the following command:
python -c"import os, signal; os.kill(, signal.CTRL_C_EVENT)"
Move your cursor back before the comma.
3. In console B, create a process that does nothing but print its process
identifier and wait long enough for you to type it in console A:
python -c"import os, time; print(os.getpid()); time.sleep(60); print('exiting
cleanly')"
Copy or remember the printed PID. Hurry to step 4 before your 60 seconds
expires!
4. In console A, type the PID from console B and execute the command.
5. In console B, confirm that the Python exited without printing "exiting
cleanly". Oddly, `echo %errorlevel%` will print `0` rather than `-1073741510`
(which is `2**32 - 0xc000013a`, the CTRL_C_EVENT exit code), which is what it
prints after `python -c"raise KeyboardInturrupt"`.
6. In console A, you should see the following traceback.
OSError: [WinError 87] The parameter is incorrect
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "<string>", line 1, in <module>
SystemError: <built-in function kill> returned a result with an error set
----------
components: Extension Modules, Windows
messages: 385235
nosy: William.Schwartz, ncoghlan, paul.moore, petr.viktorin, steve.dower,
tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Windows: SystemError during os.kill(..., signal.CTRL_C_EVENT)
type: behavior
versions: Python 3.10, Python 3.7, Python 3.8, Python 3.9
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<https://bugs.python.org/issue42962>
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