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[3.12] gh-106844: Fix issues in _winapi.LCMapStringEx (GH-107832) (#107874)

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* Strings with length from 2**31-1 to 2**32-2 always caused MemoryError,
   it doesn't matter how much memory is available.
* Strings with length exactly 2**32-1 caused OSError.
* Strings longer than 2**32-1 characters were truncated due to integer overflow bug.
* Strings containing the null character were truncated at the first null character.

Now strings longer than 2**31-1 characters caused OverflowError and the null character is allowed..
(cherry picked from commit 04cc01453d)
This commit is contained in:
Serhiy Storchaka 2023-08-16 13:10:42 +03:00 • committed by GitHub
parent aa9707dda9
commit b5176a86bd
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4 changed files with 32 additions and 16 deletions
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Lib/test/test_ntpath.py
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@ -1036,6 +1036,7 @@ class PathLikeTests(NtpathTestCase):
self._check_function(self.path.normcase)
if sys.platform == 'win32':
self.assertEqual(ntpath.normcase('\u03a9\u2126'), 'ωΩ')
self.assertEqual(ntpath.normcase('abc\x00def'), 'abc\x00def')
def test_path_isabs(self):
self._check_function(self.path.isabs)