thakis added a comment. I went ahead and landed this with the comments requested by Duncan in r324385. (http://llvm.org/viewvc/llvm-project?view=revision&revision=324385)
I'm also quoting Duncan's email reply to my comment, since that's not showing up on phab: """ Using runtime availability checking doesn't make sense for a system Libc++, as you point out. If we add runtime checks they ought to be non-default, and hidden behind configuration flags. Also, do I remember correctly that __builtin_available requires linking against Foundation (and thus the Obj-C runtime) for NSProcessInfo, or has that dependency been removed/avoided? It would be surprising for the C++ standard library to pull in the Objective-C runtime. A reasonable configuration option, but not a reasonable default behaviour IMO. """ https://reviews.llvm.org/D34249 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
