[PATCH] D55777: [libcxx] Portability fix: add missing includes and static_casts.

[Marshall Clow via Phabricator]

mclow.lists added a comment.

> I can't commit the patch myself: I don't have rights to do this.

Ok; I'll do it.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55777/new/

https://reviews.llvm.org/D55777