warning if dispose object after async

[dzmitry-lahoda]

Task foo()
{
    using var destination = new MemoryStream();
    using FileStream source = File.Open("data", FileMode.Open);
    return source.CopyToAsync(destination);
}

should warn that streams could be closed before task executed

[nlevais]

Isn't this is already solved as AsyncFixer04 case ?

[milspiir]

Any news on this one?