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bpo-46110: Add a recursion check to avoid stack overflow in the PEG parser (GH-30177)

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Co-authored-by: Batuhan Taskaya <isidentical@gmail.com>
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Pablo Galindo Salgado 2021-12-20 15:43:26 +00:00 • committed by GitHub
parent 6ca78affc8
commit e9898bf153
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5 changed files with 4602 additions and 3197 deletions
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8
Lib/test/test_syntax.py
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@ -1729,6 +1729,14 @@ while 1:
"""
self._check_error(source, "too many statically nested blocks")
@support.cpython_only
def test_error_on_parser_stack_overflow(self):
source = "-" * 100000 + "4"
for mode in ["exec", "eval", "single"]:
with self.subTest(mode=mode):
with self.assertRaises(MemoryError):
compile(source, "<string>", mode)
def load_tests(loader, tests, pattern):
tests.addTest(doctest.DocTestSuite())