[PATCH] D133574: [C2x] reject type definitions in offsetof

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman added a comment.

I'll take care of fixing this up on Tuesday (Mon is a holiday here), but if anyone wants to get to it sooner, what I plan to do is:

- Add a new `Extension` diagnostic about allowing you to define a type in `__builtin_offsetof`
- Replace the error in C with the extension warning (C++ will continue to err)
- Add documentation to the extensions manual for the builtin
- Update the release note and tests accordingly


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D133574/new/

https://reviews.llvm.org/D133574