bpo-44563: Fix error handling in tee.fromiterable()

[serhiy-storchaka]

In debug build failed tee.fromiterable() corrupted the linked
list of all GC objects.

https://bugs.python.org/issue44563

[miss-islington]

Thanks @serhiy-storchaka for the PR, and @pablogsal for merging it 🌮🎉.. I'm working now to backport this PR to: 3.10, 3.9.
🐍🍒⛏🤖

[bedevere-bot]

GH-27041 is a backport of this pull request to the 3.10 branch.

[bedevere-bot]

GH-27042 is a backport of this pull request to the 3.9 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot x86 Gentoo Non-Debug with X 3.9 has failed when building commit 324b932.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/51/builds/117) and take a look at the build logs.
4. Check if the failure is related to this commit (324b932) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/51/builds/117

Failed tests:

• test_codecmaps_kr
• test_urllibnet

Failed subtests:

• test_mapping_file - test.test_codecmaps_kr.TestJOHABMap
• test_data_header - test.test_urllibnet.urlretrieveNetworkTests
• test_geturl - test.test_urllibnet.urlopenNetworkTests
• test_mapping_file - test.test_codecmaps_kr.TestCP949Map
• test_getcode - test.test_urllibnet.urlopenNetworkTests
• test_reporthook - test.test_urllibnet.urlretrieveNetworkTests
• test_mapping_file - test.test_codecmaps_kr.TestEUCKRMap

Summary of the results of the build (if available):

== Tests result: FAILURE then FAILURE ==

415 tests OK.

10 slowest tests:

• test_peg_generator: 12 min 41 sec
• test_concurrent_futures: 4 min 41 sec
• test_unparse: 3 min 21 sec
• test_lib2to3: 3 min 17 sec
• test_multiprocessing_spawn: 3 min 3 sec
• test_asyncio: 2 min 59 sec
• test_tokenize: 2 min 47 sec
• test_urllib2: 2 min 1 sec
• test_multiprocessing_forkserver: 1 min 42 sec
• test_urllibnet: 1 min 36 sec

1 test failed:
test_codecmaps_kr

9 tests skipped:
test_devpoll test_ioctl test_kqueue test_msilib test_startfile
test_winconsoleio test_winreg test_winsound test_zipfile64

2 re-run tests:
test_codecmaps_kr test_urllibnet

Total duration: 43 min 13 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_urllibnet.py", line 210, in test_reporthook
    expected_size = int(fileheaders['Content-Length'])
TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'


Traceback (most recent call last):
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_urllibnet.py", line 97, in test_geturl
    self.assertEqual(gotten_url, self.url)
AssertionError: 'http://192.168.1.254/cgi-bin/autodetect.ha' != 'http://www.pythontest.net/'
- http://192.168.1.254/cgi-bin/autodetect.ha
+ http://www.pythontest.net/


Traceback (most recent call last):
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_urllibnet.py", line 198, in test_data_header
    time.strptime(datevalue, dateformat)
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/_strptime.py", line 562, in _strptime_time
    tt = _strptime(data_string, format)[0]
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/_strptime.py", line 317, in _strptime
    raise TypeError(msg.format(index, type(arg)))
TypeError: strptime() argument 0 must be str, not <class 'NoneType'>


Traceback (most recent call last):
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/multibytecodec_support.py", line 305, in test_mapping_file
    self._test_mapping_file_plain()
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/multibytecodec_support.py", line 322, in _test_mapping_file_plain
    self.fail(f"Invalid line: {line!r}")
AssertionError: Invalid line: '        <title>Not Found</title>\n'


Traceback (most recent call last):
  File "/buildbot/buildarea/cpython/3.9.ware-gentoo-x86.nondebug/build/Lib/test/test_urllibnet.py", line 109, in test_getcode
    self.assertEqual(code, 404)
AssertionError: 200 != 404