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Is os.write(fd, data) guaranteed to write all bytes of data? Or can it write only some (first) bytes of data?
Extract of the test:
debug("Writing chunked output")
os.write(slave_fd, TEST_STRING_2[:5])
os.write(slave_fd, TEST_STRING_2[5:])
s2 = _readline(master_fd) # <==== HERE LINE 181 ===
self.assertEqual(b'For my pet fish, Eric.\n', normalize_output(s2))with:
def _readline(fd):
"""Read one line. May block forever if no newline is read."""
reader = io.FileIO(fd, mode='rb', closefd=False)
return reader.readline()aarch64 RHEL8 Refleaks 3.x:
3:22:48 load avg: 0.00 [467/467/1] test_pty worker non-zero exit code (Exit code 1)
beginning 6 repetitions
123456
/home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.refleak/build/Lib/pty.py:95: DeprecationWarning: This process (pid=502171) is multi-threaded, use of forkpty() may lead to deadlocks in the child.
pid, fd = os.forkpty()
hi there
./home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.refleak/build/Lib/pty.py:95: DeprecationWarning: This process (pid=502171) is multi-threaded, use of forkpty() may lead to deadlocks in the child.
pid, fd = os.forkpty()
Timeout (3:20:00)!
Thread 0x0000ffff9f154590 (most recent call first):
File "/home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.refleak/build/Lib/test/test_pty.py", line 68 in _readline
File "/home/buildbot/buildarea/3.x.cstratak-RHEL8-aarch64.refleak/build/Lib/test/test_pty.py", line 181 in test_openpty
(...)
build: https://buildbot.python.org/all/#/builders/551/builds/883
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Tests in the Lib/test dirTests in the Lib/test dir