================ @@ -7730,6 +7730,14 @@ def source_date_epoch : Separate<["-"], "source-date-epoch">, } // let Visibility = [CC1Option] +def stdlib_hardening_EQ : Joined<["-"], "fstdlib-hardening=">, ---------------- cor3ntin wrote: It is consistent with `-stdlib` https://github.com/llvm/llvm-project/pull/78763