rsmith added inline comments.
================
Comment at: clang/lib/Sema/SemaDeclCXX.cpp:10339-10343
+ if (RT->getDecl()->isAnonymousStructOrUnion()) {
+ FieldsToCheck.append(RT->getDecl()->field_begin(),
+ RT->getDecl()->field_end());
+ continue;
+ }
----------------
Please add a check for `ClangABICompat` here (only do the new thing if
`getLangOpts().getClangABICompat() > LangOptions::ClangABI::Ver17`) so that
people with a stable ABI requirement can use `-fclang-abi-compat=17.0` or
earlier to turn off this ABI change. This is the first ABI change since we
branched off the 17.x release, so you'll also need to add the new `Ver17`
enumerator and parsing support for it; grep for `Ver15` to find the places you
may need to update.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D155895/new/
https://reviews.llvm.org/D155895
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