Crash in invalid star assignment

[tushar-deepsource]

Crash Report

Mypy crashes on using a single starred item as an l-value.

Traceback

$ mypy assignment.py --show-traceback
assignment.py:1: error: Starred assignment target must be in a list or tuple
assignment.py:1: error: INTERNAL ERROR -- Please try using mypy master on Github:
https://mypy.readthedocs.io/en/stable/common_issues.html#using-a-development-mypy-build
Please report a bug at https://github.com/python/mypy/issues
version: 0.942
Traceback (most recent call last):
  File "mypy/checkexpr.py", line 3978, in accept
  File "mypy/nodes.py", line 2012, in accept
  File "mypy/checkexpr.py", line 3293, in visit_list_expr
  File "mypy/checkexpr.py", line 3347, in check_lst_expr
  File "mypy/checkexpr.py", line 940, in check_call
  File "mypy/checkexpr.py", line 1025, in check_callable_call
  File "mypy/checkexpr.py", line 1173, in infer_function_type_arguments_using_context
  File "mypy/erasetype.py", line 115, in replace_meta_vars
  File "mypy/types.py", line 1965, in accept
AssertionError: 
assignment.py:1: : note: use --pdb to drop into pdb

To Reproduce

*x = [1]

Your Environment

• Mypy version used: v0.942
• Python version used: 3.10.0
• Operating system and version: MacOS Monterey

[AlexWaygood]

Think this might be a duplicate of #9137

[tushar-deepsource]

Yup, it is.