[clang] [llvm] [Clang] restrict use of attribute names reserved by the C++ standard (PR #106036)

[Aaron Ballman via llvm-commits]

AaronBallman wrote:

> @AaronBallman @erichkeane I’ve switched back to the version without the std check. should the diagnostic group be changed?

I think we're fine to leave it as-is.

https://github.com/llvm/llvm-project/pull/106036