Changelog for llvm-project-source-23.1.0: 23.1.0 -> 23.1.1
Source: clang/docs/ReleaseNotes.md

- Fixed `-Wunused-parameter` to diagnose coroutine parameters that are only
  considered during allocation function lookup or promise object
  initialization, while not diagnosing parameters passed to the selected
  allocation function or promise constructor. (#GH217501)