Multiple inheritance with Generic leads to [misc] error #18268
Description
Bug Report
If we creates multiple generic parents with the same generic attribute, mypy raises an error about incompatible definition
To Reproduce
from typing import Generic, TypeVar
T = TypeVar("T")
class A(Generic[T]):
x: T
class B(Generic[T]):
x: T
class C(A[str], B[str]):
passRaises error: Definition of "x" in base class "A" is incompatible with definition in base class "B" [misc]
Expected Behavior
The example should has no error, like in the final types case
class A:
x: str
class B:
x: str
class C(A, B):
passActual Behavior
Raises an error
Your Environment
mypy==1.14.0