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GH-130396: Use computed stack limits on linux (GH-130398)

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* Implement C recursion protection with limit pointers for Linux, MacOS and Windows

* Remove calls to PyOS_CheckStack

* Add stack protection to parser

* Make tests more robust to low stacks

* Improve error messages for stack overflow
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Mark Shannon 2025-02-25 09:24:48 +00:00 • committed by GitHub
parent 99088ab081
commit 014223649c
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58 changed files with 1295 additions and 1482 deletions
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10
Lib/test/test_json/test_recursion.py
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@ -70,23 +70,25 @@ def default(self, o):
@support.skip_emscripten_stack_overflow()
def test_highly_nested_objects_decoding(self):
very_deep = 200000
# test that loading highly-nested objects doesn't segfault when C
# accelerations are used. See #12017
with self.assertRaises(RecursionError):
with support.infinite_recursion():
self.loads('{"a":' * 100000 + '1' + '}' * 100000)
self.loads('{"a":' * very_deep + '1' + '}' * very_deep)
with self.assertRaises(RecursionError):
with support.infinite_recursion():
self.loads('{"a":' * 100000 + '[1]' + '}' * 100000)
self.loads('{"a":' * very_deep + '[1]' + '}' * very_deep)
with self.assertRaises(RecursionError):
with support.infinite_recursion():
self.loads('[' * 100000 + '1' + ']' * 100000)
self.loads('[' * very_deep + '1' + ']' * very_deep)
@support.skip_wasi_stack_overflow()
@support.skip_emscripten_stack_overflow()
def test_highly_nested_objects_encoding(self):
# See #12051
l, d = [], {}
for x in range(100000):
for x in range(200_000):
l, d = [l], {'k':d}
with self.assertRaises(RecursionError):
with support.infinite_recursion(5000):