[PATCH] D45015: [Preprocessor] Allow libc++ to detect when aligned allocation is unavailable.

[Eric Fiselier via Phabricator via cfe-commits]

EricWF added a comment.

In https://reviews.llvm.org/D45015#1121874, @ahatanak wrote:

> I see, thank you.
>
> clang front-end currently fails to issue a warning or error when an aligned allocation/deallocation functions are required but not available in a few cases (e.g., delete called from a deleting destructor, calls to operator or builtin operator new/delete). I suppose those bugs should be fixed in separate patches.


I don't think we need to emit warnings from `__builtin_operator_new`/`__builtin_operator_delete`. Libc++ is the only consumer, and I think we can trust it to know what it's doing.


https://reviews.llvm.org/D45015