diff--gita/Lib/test/test_fcntl.pyb/Lib/test/test_fcntl.pyindexe0e6782258f..e1c72c6ab7e100644---a/Lib/test/test_fcntl.py+++b/Lib/test/test_fcntl.py@@-11,7+11,7 @@cpython_only,get_pagesize,is_apple,requires_subprocess,verbose )fromtest.support.import_helperimportimport_module-fromtest.support.os_helperimportTESTFN,unlink+fromtest.support.os_helperimportTESTFN,unlink,make_bad_fd# Skip test if no fcntl module.@@-274,6+274,13 @@deftest_fcntl_small_buffer(self):deftest_fcntl_large_buffer(self):self._check_fcntl_not_mutate_len(2024)+    @unittest.skipUnless(hasattr(fcntl,'FICLONE'),'need fcntl.FICLONE')+deftest_bad_fd(self):+# gh-134744: Test error handling+fd=make_bad_fd()+withself.assertRaises(OSError):+fcntl.ioctl(fd,fcntl.F_DUPFD,0)+if__name__=='__main__':unittest.main()diff--gita/Lib/test/test_ioctl.pyb/Lib/test/test_ioctl.pyindex3c7a58aa2bc..e2f94dbf5dd100644---a/Lib/test/test_ioctl.py+++b/Lib/test/test_ioctl.py@@-5,7+5,7 @@importthreadingimportunittestfromtestimportsupport-fromtest.supportimportthreading_helper+fromtest.supportimportos_helper,threading_helperfromtest.support.import_helperimportimport_modulefcntl=import_module('fcntl')termios=import_module('termios')@@-201,6+201,15 @@deftest_ioctl_set_window_size(self):new_winsz=struct.unpack("HHHH",result)self.assertEqual(new_winsz[:2], (20,40))+    @unittest.skipUnless(hasattr(fcntl,'FICLONE'),'need fcntl.FICLONE')+deftest_bad_fd(self):+# gh-134744: Test error handling+withopen(__file__)asfp:+fd1=fp.fileno()+fd2=os_helper.make_bad_fd()+withself.assertRaises(OSError):+fcntl.ioctl(fd1,fcntl.FICLONE,fd2)+if__name__=="__main__":unittest.main()

if (ret<0) {return !async_err ?PyErr_SetFromErrno(PyExc_OSError) :NULL;        }