[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#1064922, @vsapsai wrote:

> Another approach is `__has_feature` but I don't think it is applicable in this case.
>
> Is there a way right now to detect that aligned allocation is supported by clang, regardless of link time? Asking to make sure we are consistent.


There is a C++ feature test macro, as specified by the standard, `__cpp_aligned_new`.  But I'm not sure how to be consistent with that.


Repository:
  rC Clang

https://reviews.llvm.org/D45015