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[3.12] gh-127903: Fix a crash on debug builds when calling Objects/unicodeobject::_copy_characters (GH-127876) (#128459)

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gh-127903: Fix a crash on debug builds when calling `Objects/unicodeobject::_copy_characters`` (GH-127876)
(cherry picked from commit 46cb6340d7)

Co-authored-by: Alexander Shadchin <shadchin@yandex-team.com>
This commit is contained in:
Miss Islington (bot) 2025-01-03 20:21:08 +01:00 • committed by GitHub
parent d9e199b491
commit e44045924d
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3 changed files with 15 additions and 3 deletions
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7
Lib/test/test_unicode.py
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@ -7,6 +7,7 @@ Written by Marc-Andre Lemburg (mal@lemburg.com).
"""
import _string
import codecs
import datetime
import itertools
import operator
import pickle
@ -1921,6 +1922,12 @@ class UnicodeTest(string_tests.CommonTest,
self.assertRaises(UnicodeDecodeError,
(b'\xF4'+cb+b'\xBF\xBF').decode, 'utf-8')
def test_issue127903(self):
# gh-127903: ``_copy_characters`` crashes on DEBUG builds when
# there is nothing to copy.
d = datetime.datetime(2013, 11, 10, 14, 20, 59)
self.assertEqual(d.strftime('%z'), '')
def test_issue8271(self):
# Issue #8271: during the decoding of an invalid UTF-8 byte sequence,
# only the start byte and the continuation byte(s) are now considered