[PATCH] D144654: [Lex] Warn when defining or undefining any builtin macro

[John Brawn via Phabricator via cfe-commits]

john.brawn added a comment.

This patch caused a failure in AArch64 buildbots due to AArch64TargetInfo::getTargetDefines redefining _LP64 and __LP64__. Fixed in https://reviews.llvm.org/rGe55d52cd34fb7a6a6617639d147b9d0abaceeeab.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D144654/new/

https://reviews.llvm.org/D144654