False positive `unreachable` for `NoReturn` coroutine functions

[tomasz-michalski]

Bug description

# pylint: disable=missing-module-docstring,missing-function-docstring

import asyncio
from typing import NoReturn


async def coro() -> NoReturn:
    while True:
        await asyncio.sleep(1)


async def main() -> None:
    asyncio.create_task(coro())
    print("hello")


if __name__ == "__main__":
    asyncio.run(main())

Configuration

No response

Command used

pylint a.py

Pylint output

************* Module a
a.py:14:4: W0101: Unreachable code (unreachable)

-----------------------------------
Your code has been rated at 9.00/10

Expected behavior

No error

Pylint version

pylint 3.2.6
astroid 3.2.4
Python 3.11.9 (main, Apr  6 2024, 17:59:24) [GCC 9.4.0]

OS / Environment

Ubuntu 20.04.6 LTS

Additional dependencies

No response

[tomasz-michalski]

I believe this bug was introduced in Pylint 3.2.4, #9714