Warnings when flag `-warn-concurrency` is enabled for `AsyncAlgorithms`

[Sajjon]

If I add warn-concurrency and enable-actor-data-race-check as swiftSettings for AsyncAlgorithms target I get some warnings. This is on macOS Ventura (13.0 Beta (22A5331f)) and using Xcode 14.0 beta 5 (14A5294e).

  .unsafeFlags([
           "-Xfrontend", "-warn-concurrency",
           "-Xfrontend", "-enable-actor-data-race-checks",
     ])

It feels like such a serious and great project like this ought to lead the way in terms of correctness of structured concurrency, so I expect:

1. These flags to be enabled
2. Packages, or at least the public one AsyncAlgorithms to not have any concurrency warnings.

[FranzBusch]

Thanks for opening this! I agree that we should fix all the warnings. I opened a PR that changes the debounce implementation which also fixes the debounce specific warnings: https://github.com/apple/swift-async-algorithms/pull/198

[phausler]

we kinda need a way to add these flags without requiring them for normal builds (since iirc that poses issues to other libraries linking swift packages)

[FranzBusch]

I am going to close this issue because we enabled the flags and are warning free in the main package. However, we are not warning free in the validation tests which we have to tackle separately.

[Sajjon]

Thanks for the update!