Setting the identical name between an attribute and a variable causes a fatal error

[xiaxinmeng]

Setting the identical name between an attribute and a variable causes a fatal error. See the following example.

pylint_example.py

attr = "test"
class T:
    T.attr = attr

The expected behavior:

No fatal error

Pylint output:

>> pylint pylint_example.py
************* Module pylint_example
pylint_example.py:82:0: C0103: Constant name "attr" doesn't conform to UPPER_CASE naming style (invalid-name)
pylint_example.py:83:0: C0115: Missing class docstring (missing-class-docstring)
pylint_example.py:83:0: C0103: Class name "T" doesn't conform to PascalCase naming style (invalid-name)
pylint_example.py:84:4: E0602: Undefined variable 'T' (undefined-variable)
Exception on node <Name.attr l.84 at 0x7f98c1d756d0> in file '/home/xxm/Desktop/pylint_example.py'
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/variables.py", line 1616, in visit_name
    self._undefined_and_used_before_checker(node, stmt)
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/checkers/variables.py", line 1657, in _undefined_and_used_before_checker
    action, nodes_to_consume = self._check_consumer(
                               ^^^^^^^^^^^^^^^^^^^^^
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/checkers/variables.py", line 1749, in _check_consumer
    found_nodes = current_consumer.get_next_to_consume(node)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/xxm/.local/lib/python3.11/site-packages/pylint/checkers/variables.py", line 612, in get_next_to_consume
    if lhs.name == name:  # this name is defined in this very statement
       ^^^^^^^^
AttributeError: 'AssignAttr' object has no attribute 'name'
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-2023-06-09-15-25-11.txt'. (astroid-error)

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Test environment:

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