wmayner added the comment:
Output of `./python3 -m unittest -v test.test_readline`:
testHistoryUpdates (test.test_readline.TestHistoryManipulation) ... ok
test_nonascii_history (test.test_readline.TestHistoryManipulation) ... ok
test_write_read_append (test.test_readline.TestHistoryManipulation) ... ok
test_auto_history_disabled (test.test_readline.TestReadline) ...
I then found by commenting-out tests that it hangs if and only if `run_pty` is
called, so it seems that your hunch is probably right.
I compiled without `--enable-optimizations` and the same tests hang. Compiling
with that option runs the whole test suite, which revealed the problem, but it
doesn't seem to be related.
Here's the KeyboardInterrupt trace:
estHistoryUpdates (test.test_readline.TestHistoryManipulation) ... ok
test_nonascii_history (test.test_readline.TestHistoryManipulation) ... ok
test_write_read_append (test.test_readline.TestHistoryManipulation) ... ok
test_auto_history_disabled (test.test_readline.TestReadline) ... ^CTraceback
(most recent call last):
File "/home/will/python3.6.1/lib/python3.6/runpy.py", line 193, in
_run_module_as_main
"__main__", mod_spec)
File "/home/will/python3.6.1/lib/python3.6/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/home/will/python3.6.1/lib/python3.6/unittest/__main__.py", line 18, in
<module>
main(module=None)
File "/home/will/python3.6.1/lib/python3.6/unittest/main.py", line 94, in
__init__
self.runTests()
File "/home/will/python3.6.1/lib/python3.6/unittest/main.py", line 255, in
runTests
self.result = testRunner.run(self.test)
File "/home/will/python3.6.1/lib/python3.6/unittest/runner.py", line 176, in
run
test(result)
File "/home/will/python3.6.1/lib/python3.6/unittest/suite.py", line 84, in
__call__
return self.run(*args, **kwds)
File "/home/will/python3.6.1/lib/python3.6/unittest/suite.py", line 122, in
run
test(result)
File "/home/will/python3.6.1/lib/python3.6/unittest/suite.py", line 84, in
__call__
return self.run(*args, **kwds)
File "/home/will/python3.6.1/lib/python3.6/unittest/suite.py", line 122, in
run
test(result)
File "/home/will/python3.6.1/lib/python3.6/unittest/suite.py", line 84, in
__call__
return self.run(*args, **kwds)
File "/home/will/python3.6.1/lib/python3.6/unittest/suite.py", line 122, in
run
test(result)
File "/home/will/python3.6.1/lib/python3.6/unittest/case.py", line 649, in
__call__
return self.run(*args, **kwds)
File "/home/will/python3.6.1/lib/python3.6/unittest/case.py", line 601, in run
testMethod()
File "/home/will/python3.6.1/lib/python3.6/test/test_readline.py", line 136,
in test_auto_history_disabled
output = run_pty(self.auto_history_script.format(False))
File "/home/will/python3.6.1/lib/python3.6/test/test_readline.py", line 240,
in run_pty
for [_, events] in sel.select():
File "/home/will/python3.6.1/lib/python3.6/selectors.py", line 323, in select
r, w, _ = self._select(self._readers, self._writers, [], timeout)
KeyboardInterrupt
----------
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<http://bugs.python.org/issue30393>
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