using a ParamSpec as a base type causes crash

[KotlinIsland]

from typing import ParamSpec

P = ParamSpec("P")

class MyFunction(P):
    ...

test.py:5: error: INTERNAL ERROR -- Please try using mypy master on Github:
https://mypy.readthedocs.io/en/stable/common_issues.html#using-a-development-mypy-build
If this issue continues with mypy master, please report a bug at https://github.com/python/mypy/issues
version: 0.920+dev.febec7123c839fce87815dbe847266596f985d72

[sobolevn]

I cannot reproduce this on the latest master

Maybe #10866 or #10923 or any other PR fixed it?

[sobolevn]

Update: crashes on 3.10 and on from typing_extensions import ParamSpec

I will provide a fix shortly! Thanks for reporting it! 👍