bpo-43916: _md5.md5 uses Py_TPFLAGS_DISALLOW_INSTANTIATION

[vstinner]

The following types use Py_TPFLAGS_DISALLOW_INSTANTIATION flag:

• _md5.md5
• _sha1.sha1
• _sha256.sha224
• _sha256.sha256
• _sha512.sha384
• _sha512.sha512

https://bugs.python.org/issue43916

[vstinner]

Windows (x64): test_asyncio failed, I re-run all jobs.

[tiran]

Tests are failing. The failures look unrelated. Could you please file a bug report with asyncio and enum?

[tiran]

 ======================================================================
ERROR: test_add_signal_handler_install_error3 (test.test_asyncio.test_unix_events.SelectorEventLoopSignalTests)
----------------------------------------------------------------------
test test_asyncio failed
Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/asyncio/unix_events.py", line 116, in add_signal_handler
    signal.signal(sig, _sighandler_noop)
  File "/home/runner/work/cpython/cpython/Lib/unittest/mock.py", line 1105, in __call__
    return self._mock_call(*args, **kwargs)
  File "/home/runner/work/cpython/cpython/Lib/unittest/mock.py", line 1109, in _mock_call
    return self._execute_mock_call(*args, **kwargs)
  File "/home/runner/work/cpython/cpython/Lib/unittest/mock.py", line 1164, in _execute_mock_call
    raise effect
test.test_asyncio.test_unix_events.SelectorEventLoopSignalTests.test_add_signal_handler_install_error3.<locals>.Err

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/unittest/mock.py", line 1370, in patched
    return func(*newargs, **newkeywargs)
  File "/home/runner/work/cpython/cpython/Lib/test/test_asyncio/test_unix_events.py", line 165, in test_add_signal_handler_install_error3
    self.assertRaises(
  File "/home/runner/work/cpython/cpython/Lib/unittest/case.py", line 732, in assertRaises
    return context.handle('assertRaises', args, kwargs)
  File "/home/runner/work/cpython/cpython/Lib/unittest/case.py", line 201, in handle
    callable_obj(*args, **kwargs)
  File "/home/runner/work/cpython/cpython/Lib/asyncio/unix_events.py", line 129, in add_signal_handler
    raise RuntimeError(f'sig {sig} cannot be caught')
  File "/home/runner/work/cpython/cpython/Lib/enum.py", line 1019, in __format__
    warnings.warn(
DeprecationWarning: in 3.12 format() will use the enum member, not the enum member's value;
use a format specifier, such as :d for an IntEnum member, to maintainthe current display

[vstinner]

Tests are failing. The failures look unrelated. Could you please file a bug report with asyncio and enum?

I'm reporting test_asyncio failures for 2 years, nobody fix them. I sent two emails on python-dev.

I don't have the bandwidth to report the enum issue. I let someone else handling it ;-) It's unrelated to the PR.

[tiran]

@vstinner Could you please give me time to verify PRs against modules that I'm responsible for? I was in the middle of verifying that test issues were unrelated.

[vstinner]

@vstinner Could you please give me time to verify PRs against modules that I'm responsible for? I was in the middle of verifying that test issues were unrelated.

Usually yes, but for this specific issue I couldn't, I needed to fix it before I leave for 1 week of holiday, and https://bugs.python.org/issue43916 was marked as a release blocker. I preferred to fix the issue than trying to explain the complex status "well, some types are fixed, but not all of them" :-D