From: Serhiy Storchaka Date: Wed, 22 Jul 2026 05:47:25 +0000 (+0300) Subject: [3.13] gh-154416: Fix hanging test_tcflow on DragonFly BSD (GH-154417) (GH-154421) X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9d4e8520b2f82f4250728597f008817e8a6c8f3c;p=thirdparty%2FPython%2Fcpython.git [3.13] gh-154416: Fix hanging test_tcflow on DragonFly BSD (GH-154417) (GH-154421) TCIOFF and TCION transmit STOP and START characters, and closing the pseudo-terminal waits until they are read. Discard them. (cherry picked from commit b0c945a27e708419c6845234ef633ce3f7c4c41e) Co-authored-by: Claude Opus 4.8 --- diff --git a/Lib/test/test_termios.py b/Lib/test/test_termios.py index aa562b25cbcd..ca9d2afb76db 100644 --- a/Lib/test/test_termios.py +++ b/Lib/test/test_termios.py @@ -169,6 +169,9 @@ class TestFunctions(unittest.TestCase): termios.tcflow(self.fd, termios.TCOON) termios.tcflow(self.fd, termios.TCIOFF) termios.tcflow(self.fd, termios.TCION) + # Discard the transmitted STOP and START characters, + # otherwise closing the pseudo-terminal can block. + termios.tcflush(self.fd, termios.TCOFLUSH) def test_tcflow_errors(self): self.assertRaisesTermiosError(errno.EINVAL, termios.tcflow, self.fd, -1)