zixuw added inline comments.
================ Comment at: clang/lib/Lex/PPExpressions.cpp:262 + // string to UndefPrefixes as an explicit "-Wundef" does. + if (UndefPrefixes.empty() || + llvm::any_of(UndefPrefixes, ---------------- ributzka wrote: > What happens when you use `-Werror=undef` and `-Wundef-prefix=<arg>`? Then we only get errors for `undef-prefix=<arg>`. Yes this needs to be fixed. Perhaps a better way to handle the `-Werror=undef` implication of `-Wundef`. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D80751/new/ https://reviews.llvm.org/D80751 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
