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gh-93678: Address stack exhaustion on WASI (GH-95296)

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Christian Heimes 2022-07-26 22:14:35 +02:00 • committed by GitHub
parent 9af7f87d76
commit 51c56f8d72
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2 changed files with 9 additions and 4 deletions
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2
Lib/test/test_compile.py
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@ -108,6 +108,7 @@ class TestSpecifics(unittest.TestCase):
exec('z = a', g, d) exec('z = a', g, d)
self.assertEqual(d['z'], 12) self.assertEqual(d['z'], 12)
@unittest.skipIf(support.is_wasi, "exhausts limited stack on WASI")
def test_extended_arg(self): def test_extended_arg(self):
# default: 1000 * 2.5 = 2500 repetitions # default: 1000 * 2.5 = 2500 repetitions
repeat = int(sys.getrecursionlimit() * 2.5) repeat = int(sys.getrecursionlimit() * 2.5)
@ -542,6 +543,7 @@ if 1:
self.assertIn(b"Non-UTF-8", res.err) self.assertIn(b"Non-UTF-8", res.err)
@support.cpython_only @support.cpython_only
@unittest.skipIf(support.is_wasi, "exhausts limited stack on WASI")
def test_compiler_recursion_limit(self): def test_compiler_recursion_limit(self):
# Expected limit is sys.getrecursionlimit() * the scaling factor # Expected limit is sys.getrecursionlimit() * the scaling factor
# in symtable.c (currently 3) # in symtable.c (currently 3)

11
Lib/test/test_dynamic.py
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@ -1,6 +1,7 @@
# Test the most dynamic corner cases of Python's runtime semantics. # Test the most dynamic corner cases of Python's runtime semantics.
import builtins import builtins
import sys
import unittest import unittest
from test.support import swap_item, swap_attr from test.support import swap_item, swap_attr
@ -139,12 +140,14 @@ class RebindBuiltinsTests(unittest.TestCase):
def __missing__(self, key): def __missing__(self, key):
return int(key.removeprefix("_number_")) return int(key.removeprefix("_number_"))
code = "lambda: " + "+".join(f"_number_{i}" for i in range(1000)) # 1,000 on most systems
sum_1000 = eval(code, MyGlobals()) limit = sys.getrecursionlimit()
expected = sum(range(1000)) code = "lambda: " + "+".join(f"_number_{i}" for i in range(limit))
sum_func = eval(code, MyGlobals())
expected = sum(range(limit))
# Warm up the the function for quickening (PEP 659) # Warm up the the function for quickening (PEP 659)
for _ in range(30): for _ in range(30):
self.assertEqual(sum_1000(), expected) self.assertEqual(sum_func(), expected)
if __name__ == "__main__": if __name__ == "__main__":
unittest.main() unittest.main()