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

[Volodymyr Sapsai via Phabricator via cfe-commits]

vsapsai added a comment.

With this change and the mentioned libc++ change the tests with old libc++ dylib are passing (didn't test all possible configurations though). Would like to get more feedback from other reviewers on this matter.


https://reviews.llvm.org/D45015