[PATCH] D151741: [Lex] Only warn on defining or undefining language-defined builtins

[Martin Storsjö via Phabricator via cfe-commits]

mstorsjo added a comment.

Thanks! +1 from me, this does clear up all the issues I've had - it supersedes D151662 <https://reviews.llvm.org/D151662> and makes the external patch to avoid doing `-U__STRICT_ANSI__` unnecessary.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151741/new/

https://reviews.llvm.org/D151741