[PATCH] D52662: [libc++] Make sure we can build libc++ with -fvisibility=hidden

[Louis Dionne via Phabricator]

ldionne added a comment.

@EricWF I think all of your concerns with this patch have been addressed -- do you see anything else or is this good to go?


Repository:
  rCXX libc++

https://reviews.llvm.org/D52662