[PATCH] D44826: Add -Wunused-using, a warning that finds unused using declarations.

[Erich Keane via Phabricator via cfe-commits]

erichkeane added a comment.

My opinion matters less than @rsmith or @dblaikie on the review, but it seems to me that Typedef and Using are SO similar that the implementations should just be combined.  You'd likely have to change a couple of types along the way to be more generic, but the implementations are essentially a copy/paste of eachother.


Repository:
  rC Clang

https://reviews.llvm.org/D44826