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gh-107450: Check for overflow in the tokenizer and fix overflow test (#110832)

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Co-authored-by: Filipe Laíns <lains@riseup.net>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Lysandros Nikolaou 2023-10-16 16:42:49 +02:00 • committed by GitHub
parent b3c9faf056
commit a1ac5590e0
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4 changed files with 40 additions and 22 deletions
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16
Lib/test/test_exceptions.py
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@ -18,6 +18,12 @@ from test.support.os_helper import TESTFN, unlink
from test.support.warnings_helper import check_warnings
from test import support
try:
from _testcapi import INT_MAX
except ImportError:
INT_MAX = 2**31 - 1
class NaiveException(Exception):
def __init__(self, x):
@ -318,11 +324,13 @@ class ExceptionTests(unittest.TestCase):
check('(yield i) = 2', 1, 2)
check('def f(*):\n pass', 1, 7)
@unittest.skipIf(INT_MAX >= sys.maxsize, "Downcasting to int is safe for col_offset")
@support.requires_resource('cpu')
@support.bigmemtest(support._2G, memuse=1.5)
def testMemoryErrorBigSource(self, _size):
with self.assertRaises(OverflowError):
exec(f"if True:\n {' ' * 2**31}print('hello world')")
@support.bigmemtest(INT_MAX, memuse=2, dry_run=False)
def testMemoryErrorBigSource(self, size):
src = b"if True:\n%*s" % (size, b"pass")
with self.assertRaisesRegex(OverflowError, "Parser column offset overflow"):
compile(src, '<fragment>', 'exec')
@cpython_only
def testSettingException(self):