Recursive defining a function with classmethod decorator triggers crashing

[xiaxinmeng]

Recursive defining a function with classmethod decorator triggers a fatal error.

pylint_example.py

class C:
   pass

@classmethod
def foo(cls, a):
    b = super(C, cls).foo(a)
    return b

The expected behavior:

No fatal error.

Pylint output

>> pylint 'pylint_example.py'
************* Module pylint_example
pylint_example.py:69:0: C0115: Missing class docstring (missing-class-docstring)
pylint_example.py:69:0: C0103: Class name "C" doesn't conform to PascalCase naming style (invalid-name)
pylint_example.py:69:0: R0903: Too few public methods (0/2) (too-few-public-methods)
pylint_example.py:73:0: C0116: Missing function or method docstring (missing-function-docstring)
pylint_example.py:73:0: C0104: Disallowed name "foo" (disallowed-name)
pylint_example.py:73:13: C0103: Argument name "a" doesn't conform to snake_case naming style (invalid-name)
Exception on node <Assign l.74 at 0x7f105a5fa450> in file '/home/xxm/Desktop/pylint_example.py'
Traceback (most recent call last):
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/inference_tip.py", line 54, in inner
    yield from _cache[func, node, context]
               ~~~~~~^^^^^^^^^^^^^^^^^^^^^
KeyError: (<function register_builtin_transform.<locals>._transform_wrapper at 0x7f105dd2f380>, <Call l.74 at 0x7f105a5fa810>, <astroid.context.InferenceContext object at 0x7f105a60d240>)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/checkers/utils.py", line 1341, in safe_infer
    value = next(infer_gen)
            ^^^^^^^^^^^^^^^
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/nodes/node_ng.py", line 166, in infer
    yield from self._infer(context=context, **kwargs)
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/decorators.py", line 90, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/inference.py", line 374, in infer_attribute
    for owner in self.expr.infer(context):
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/nodes/node_ng.py", line 153, in infer
    for result in self._explicit_inference(
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/inference_tip.py", line 66, in inner
    func(node, context, **kwargs)
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/brain/brain_builtin_inference.py", line 177, in _transform_wrapper
    result = transform(node, context=context)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/xxm/.local/lib/python3.11/site-packages/astroid/brain/brain_builtin_inference.py", line 441, in infer_super
    assert cls is not None
           ^^^^^^^^^^^^^^^
AssertionError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/utils/ast_walker.py", line 91, in walk
    callback(astroid)
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/checkers/refactoring/refactoring_checker.py", line 1524, in visit_assign
    self._append_context_managers_to_stack(node)
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/checkers/refactoring/refactoring_checker.py", line 1579, in _append_context_managers_to_stack
    inferred = utils.safe_infer(value.func)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/checkers/utils.py", line 1345, in safe_infer
    raise AstroidError from e
astroid.exceptions.AstroidError
pylint_example.py:1:0: F0002: /home/xxm/Desktop/pylint_example.py: Fatal error while checking '/home/xxm/Desktop/pylint_example.py'. Please open an issue in our bug tracker so we address this. There is a pre-filled template that you can use in '/home/xxm/.cache/pylint/pylint-crash-2023-06-09-15-30-18.txt'. (astroid-error)

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Your code has been rated at 0.00/10 (previous run: 0.00/10, +0.00)

Test Environment:

pylint 3.0.0b1
astroid 3.0.0a5-dev0
Python 3.11.3
Ubuntu 18.04