mstorsjo added a comment. To pick up the thread here again, `[[no_unique_address]]` is done and settled in MSVC, with the slightly surprising semantics: `[[no_unique_address]]` is accepted, without any warning (in C++20 mode), but it has no effect. (This, not related to LLVM, but because they had shipped it in earlier versions without having an effect, and changing that later would break things.) `[[msvc::no_unique_address]]` does have an effect though. See https://github.com/microsoft/STL/issues/1364#issuecomment-1034167093 for a more authoritative source on that.
So, separately from implementing `[[msvc::no_unique_address]]`, I think we also should also silence the current warning about unknown attribute for the standard `[[no_unique_address]]`, to match MSVC. CHANGES SINCE LAST ACTION https://reviews.llvm.org/D110485/new/ https://reviews.llvm.org/D110485 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
