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Diffstat (limited to 'Lib/test/test_re.py')
| -rw-r--r-- | Lib/test/test_re.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py index 9346f8b..f96c3f9 100644 --- a/Lib/test/test_re.py +++ b/Lib/test/test_re.py @@ -681,6 +681,15 @@ class ReTests(unittest.TestCase): self.assertEqual(re.match('(x)*y', 50000*'x'+'y').group(1), 'x') self.assertEqual(re.match('(x)*?y', 50000*'x'+'y').group(1), 'x') + def test_unlimited_zero_width_repeat(self): + # Issue #9669 + self.assertIsNone(re.match(r'(?:a?)*y', 'z')) + self.assertIsNone(re.match(r'(?:a?)+y', 'z')) + self.assertIsNone(re.match(r'(?:a?){2,}y', 'z')) + self.assertIsNone(re.match(r'(?:a?)*?y', 'z')) + self.assertIsNone(re.match(r'(?:a?)+?y', 'z')) + self.assertIsNone(re.match(r'(?:a?){2,}?y', 'z')) + def test_scanner(self): def s_ident(scanner, token): return token def s_operator(scanner, token): return "op%s" % token |