Some regressions with anyio 4.4.0

[musicinmybrain]

There seem to be some test failures and errors with the just-released anyio 4.4.0.

$ gh repo clone encode/starlette
$ cd starlette
$ python3 -m venv _e
$ . _e/bin/activate
(_e) $ pip install -e .[full]
(_e) $ pip install -r requirements.txt
(_e) $ python -m pytest
=========================== short test summary info ============================
XFAIL tests/middleware/test_base.py::test_contextvars[asyncio-CustomMiddlewareUsingBaseHTTPMiddleware] - BaseHTTPMiddleware creates a TaskGroup which copies the contextand erases any changes to it made within the TaskGroup
============= 41 failed, 748 passed, 1 xfailed, 8 errors in 5.39s ==============

tests.log

However:

(_e) $ pip install 'anyio<4.4.0'
(_e) $ python -m pytest
=========================================================================================== short test summary info ============================================================================================
XFAIL tests/middleware/test_base.py::test_contextvars[asyncio-CustomMiddlewareUsingBaseHTTPMiddleware] - BaseHTTPMiddleware creates a TaskGroup which copies the contextand erases any changes to it made within the TaskGroup
XFAIL tests/middleware/test_base.py::test_contextvars[trio-CustomMiddlewareUsingBaseHTTPMiddleware] - BaseHTTPMiddleware creates a TaskGroup which copies the contextand erases any changes to it made within the TaskGroup
======================================================================================== 796 passed, 2 xfailed in 4.71s ========================================================================================

[musicinmybrain]

Any thoughts on this? Shall I open an issue?

[Kludex]

I think is the same issue as this one: #2603

[musicinmybrain]

Thanks! I’ll track that discussion, and once a PR is ready, I’ll report whether it fixes this.