[libcxx-commits] [libcxx] [libcxx][test] Avoid warnings about unused variables and typedefs if `_LIBCPP_VERSION` is not defined (PR #155679)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

@AlexGuteniev Do you need the branch to be merged?

https://github.com/llvm/llvm-project/pull/155679