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[3.10] bpo-46110: Add a recursion check to avoid stack overflow in the PEG parser (GH-30177) (GH-30214)

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Co-authored-by: Batuhan Taskaya <isidentical@gmail.com>.
(cherry picked from commit e9898bf153)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
This commit is contained in:
Pablo Galindo Salgado 2021-12-20 16:23:37 +00:00 • committed by GitHub
parent 95948169d7
commit dc73199a21
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5 changed files with 4424 additions and 3073 deletions
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8
Lib/test/test_syntax.py
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@ -1576,6 +1576,14 @@ def test_syntax_error_on_deeply_nested_blocks(self):
"""
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 test_main():
support.run_unittest(SyntaxTestCase)