rjmccall added a comment. I don't think it'll actually error out at link time: protocol objects get emitted eagerly on use, cross-module linking is just a code-size optimization. This actually has caused longstanding problems.
Anyway, I think it's fine to require forward declarations to have the attribute. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D75574/new/ https://reviews.llvm.org/D75574 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
