mirror of
https://github.com/RustPython/RustPython.git
synced 2026-10-28 18:59:04 +08:00
Jeong, YunWon
e053f7d5b6
* vm: drop trailing space from RecursionError text Format Python-limit and native-stack RecursionError messages through one helper so empty context is not a trailing space or an empty string. Assisted-by: Grok 4.6 * test: deepen nested hash snippets for release stack frames The cold RecursionError helper thins with_recursion's hot frame, so 100_000 nested hashes no longer trip the native stack guard in release. Assisted-by: Grok 4.6 * vm: let RecursionError callers own the where-clause space The helper concatenates an empty suffix or one that already starts with a space. Call sites supply that space. Assisted-by: Grok 4.6
76 lines
1.5 KiB
Python
76 lines
1.5 KiB
Python
from testutils import assert_raises
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class Foo(object):
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pass
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Foo.__repr__ = Foo.__str__
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foo = Foo()
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# Since the default __str__ implementation calls __repr__ and __repr__ is
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# actually __str__, str(foo) should raise a RecursionError.
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assert_raises(RecursionError, str, foo)
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# A __call__ that is the object being called dispatches through the call slot
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# again, and none of that pushes a Python frame.
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class Caller:
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pass
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caller = Caller()
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Caller.__call__ = caller
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assert_raises(RecursionError, caller)
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# The same shape through the descriptor protocol: resolving the attribute
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# fetches __get__, which is the descriptor itself.
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class Descr:
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pass
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descr = Descr()
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Descr.__get__ = descr
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Descr.x = descr
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try:
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descr.x
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except (RecursionError, TypeError):
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# RecursionError here, TypeError from the call of a non-callable elsewhere
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pass
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else:
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raise AssertionError("descr.x should not resolve")
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def recurse():
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recurse()
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try:
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recurse()
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except RecursionError as e:
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msg = str(e)
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assert msg, f"empty RecursionError message: {e!r}"
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assert not msg.endswith(" "), f"trailing space in RecursionError: {e!r}"
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import sys
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prev_limit = sys.getrecursionlimit()
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try:
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sys.setrecursionlimit(50)
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try:
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recurse()
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except RecursionError as e:
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assert str(e) == "maximum recursion depth exceeded", (
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f"unexpected message: {e!r}"
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)
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assert e.args == ("maximum recursion depth exceeded",), (
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f"unexpected args: {e.args!r}"
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)
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finally:
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sys.setrecursionlimit(prev_limit)
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