[libcxx-commits] [libcxx] Add `_LIBCPP_PLACEMENT_NEW_DEFINED` macro to allow for user defined placement new operators (PR #70538)

[via libcxx-commits]

philnik777 wrote:

Clang always treats placement-new as an intrinsic, so I think we can close this: https://godbolt.org/z/fPjKja3cK

https://github.com/llvm/llvm-project/pull/70538