StaticFiles.get_response does not handle OS errors when resolving path

[coactive-candace]

Code snippet:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/ddtrace/contrib/asgi/middleware.py", line 198, in __call__
    return await self.app(scope, receive, wrapped_send)
  File "/usr/local/lib/python3.9/site-packages/starlette/middleware/exceptions.py", line 79, in __call__
    raise exc
  File "/usr/local/lib/python3.9/site-packages/starlette/middleware/exceptions.py", line 68, in __call__
    await self.app(scope, receive, sender)
  File "/usr/local/lib/python3.9/site-packages/fastapi/middleware/asyncexitstack.py", line 20, in __call__
    raise e
  File "/usr/local/lib/python3.9/site-packages/fastapi/middleware/asyncexitstack.py", line 17, in __call__
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.9/site-packages/starlette/routing.py", line 718, in __call__
    await route.handle(scope, receive, send)
  File "/usr/local/lib/python3.9/site-packages/starlette/routing.py", line 443, in handle
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.9/site-packages/starlette/staticfiles.py", line 103, in __call__
    response = await self.get_response(path, scope)
  File "/usr/local/lib/python3.9/site-packages/starlette/staticfiles.py", line 121, in get_response
    full_path, stat_result = await anyio.to_thread.run_sync(
  File "/usr/local/lib/python3.9/site-packages/anyio/to_thread.py", line 33, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
  File "/usr/local/lib/python3.9/site-packages/anyio/_backends/_asyncio.py", line 877, in run_sync_in_worker_thread
    return await future
  File "/usr/local/lib/python3.9/site-packages/anyio/_backends/_asyncio.py", line 807, in run
    result = context.run(func, *args)
  File "/usr/local/lib/python3.9/site-packages/starlette/staticfiles.py", line 177, in lookup_path
    return full_path, os.stat(full_path)
OSError: [Errno 36] File name too long: <filename>

When an OSError is raised from lookup_path, an exception is raised immediately. Based on the code in the caller function get_response, it seems like get_response is supposed to catch that exception and return a 404, but is never getting to that line.

OS platform: macOS 14.5
FastAPI version: 0.98.0 -> Starlette version: >=0.27.0

[Kludex]

This is solved.