dlang/dmd pull request #12093 "[dmd-cxx] Backport more recent traits to the C++ port" was merged into dmd-cxx:
- 18da3ec2cbe528f546ab3fc955662457fb0a81e1 by RazvanN7:
[dmd-cxx] Fix Issue 17878 - Add __traits(isFuture, ...)
https://github.com/dlang/dmd/pull/12093