Mypyc produces module that crashes (segmentation fault) when executed

compiled.py:

from typing import Generic, TypeVar

_T = TypeVar("_T")

class Bar(Generic[_T]):
    def __init__(self) -> None:
        self.value: str = 'start'
    def __get__(self, instance: _T, owner: type[_T] | None = None) -> str:
        return self.value
    def __set__(self, instance: _T, value: str) -> None:
        self.value = value

class Foo(object):
    bar: Bar = Bar()

Compiled with python3 -m mypyc compiled.py.

test.py:

import compiled

print("hello")

f = compiled.Foo()
print(f.bar)

f.bar = 'test'
print(f.bar)

And running with:

$ python3 test.py
hello
<compiled.Bar object at 0x7464e7774310>
Segmentation fault

Using current master of mypyc:

$ python3 -m mypyc --version
mypy 1.16.0+dev.7b4f6311e29452cc8d4ddb78331d0047c8b17e93.dirty (compiled: no)

Using Python 3.13.1

If running with python3 directly:

$ python3 test.py
hello
start
test

Reproduce the crash by compiling compiled.py with python3 -m mypyc and running test.py under Python 3.13.1. Compare the compiled behavior with direct Python execution, focusing on the generic descriptor and Foo.bar access. Done means the compiled module prints hello, start, and test without a segmentation fault.