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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"test_signal: test_interprocess_signal() failed on GHA macOS","articleBody":"The problem is that the first subprocess.Popen may not be removed **immediately** after ``with self.subprocess_send_signal(pid, \"SIGHUP\") as child:`` block, it can survive a little bit. But while it is being deleted automatically, oooops, sigusr1_handler() triggers and raises an SIGUSR1Exception exception which is logged as an \"ignored exception\", but it is **ignored**! The test fails.\r\n\r\nGHA macOS:\r\n\r\n```\r\n======================================================================\r\nFAIL: test_interprocess_signal (test.test_signal.PosixTests.test_interprocess_signal)\r\n----------------------------------------------------------------------\r\nTraceback (most recent call last):\r\n  File \"/Users/runner/work/cpython/cpython/Lib/test/test_signal.py\", line 108, in test_interprocess_signal\r\n    assert_python_ok(script)\r\n  File \"/Users/runner/work/cpython/cpython/Lib/test/support/script_helper.py\", line 166, in assert_python_ok\r\n    return _assert_python(True, *args, **env_vars)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/Users/runner/work/cpython/cpython/Lib/test/support/script_helper.py\", line 151, in _assert_python\r\n    res.fail(cmd_line)\r\n  File \"/Users/runner/work/cpython/cpython/Lib/test/support/script_helper.py\", line 76, in fail\r\n    raise AssertionError(\"Process return code is %d\\n\"\r\nAssertionError: Process return code is 1\r\ncommand line: ['/Users/runner/work/cpython/cpython/python.exe', '-X', 'faulthandler', '-I', '/Users/runner/work/cpython/cpython/Lib/test/signalinterproctester.py']\r\n\r\nstdout:\r\n---\r\n\r\n---\r\n\r\nstderr:\r\n---\r\nException ignored in: \u003cfunction Popen.__del__ at 0x109080dd0\u003e\r\nTraceback (most recent call last):\r\n  File \"/Users/runner/work/cpython/cpython/Lib/subprocess.py\", line 1120, in __del__\r\n    def __del__(self, _maxsize=sys.maxsize, _warn=warnings.warn):\r\n\r\n  File \"/Users/runner/work/cpython/cpython/Lib/test/signalinterproctester.py\", line 23, in sigusr1_handler\r\n    raise SIGUSR1Exception\r\nSIGUSR1Exception: \r\nF\r\n======================================================================\r\nFAIL: test_interprocess_signal (__main__.InterProcessSignalTests.test_interprocess_signal)\r\n----------------------------------------------------------------------\r\nTraceback (most recent call last):\r\n  File \"/Users/runner/work/cpython/cpython/Lib/test/signalinterproctester.py\", line 62, in test_interprocess_signal\r\n    with self.assertRaises(SIGUSR1Exception):\r\nAssertionError: SIGUSR1Exception not raised\r\n\r\n----------------------------------------------------------------------\r\nRan 1 test in 0.252s\r\n\r\nFAILED (failures=1)\r\n---\r\n\r\n----------------------------------------------------------------------\r\nRan 46 tests in 132.286s\r\n\r\nFAILED (failures=1, skipped=10)\r\n```\r\n\r\nbuild: https://github.com/python/cpython/actions/runs/6340922718/job/17223429951?pr=110026\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-110035\n* gh-110040\n* gh-110041\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/vstinner","@type":"Person","name":"vstinner"},"datePublished":"2023-09-28T16:05:42.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/110033/cpython/issues/110033"}