[PATCH] D27827: [ObjC] CodeGen support for @available on macOS

[Nico Weber via Phabricator via cfe-commits]

thakis added a comment.

(Our workaround is to call __builtin_available() once before engaging the sandbox, which isn't so bad. Just thought I'd let you know about it; this isn't a serious bug for us.)


Repository:
  rL LLVM

https://reviews.llvm.org/D27827