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[3.14] gh-139391: properly handle signal.signal() in UnixConsole when called from a non-main thread (GH-139392) (#139858)

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gh-139391: properly handle `signal.signal()` in `UnixConsole` when called from a non-main thread (GH-139392)
(cherry picked from commit b8c8b8f1d3)

Co-authored-by: yihong <zouzou0208@gmail.com>
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Miss Islington (bot) 2025-10-09 18:10:51 +02:00 • committed by GitHub
parent de87549eb8
commit 8761d6e644
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3 changed files with 22 additions and 2 deletions
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14
Lib/test/test_pyrepl/test_unix_console.py
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@ -4,11 +4,12 @@ import os
import signal
import subprocess
import sys
import threading
import unittest
from functools import partial
from test import support
from test.support import os_helper, force_not_colorized_test_class
from test.support import script_helper
from test.support import script_helper, threading_helper
from unittest import TestCase
from unittest.mock import MagicMock, call, patch, ANY, Mock
@ -318,6 +319,17 @@ class TestConsole(TestCase):
console.prepare() # needed to call restore()
console.restore() # this should succeed
@threading_helper.reap_threads
@threading_helper.requires_working_threading()
def test_restore_in_thread(self, _os_write):
# gh-139391: ensure that console.restore() silently suppresses
# exceptions when calling signal.signal() from a non-main thread.
console = unix_console([])
console.old_sigwinch = signal.SIG_DFL
thread = threading.Thread(target=console.restore)
thread.start()
thread.join() # this should not raise
@unittest.skipIf(sys.platform == "win32", "No Unix console on Windows")
class TestUnixConsoleEIOHandling(TestCase):