[PATCH] D34574: [Sema] Disable c++17 aligned new and delete operators if not implemented in the deployment target's c++ standard library

[Akira Hatanaka via Phabricator via cfe-commits]

ahatanak added a comment.

I'll revert the changes I made to libc++ that annotates the allocation functions with availability later.


https://reviews.llvm.org/D34574