gcc/c-family/ChangeLog:
* c.opt: Add Warning keyword for 2 options.
This switch is deprecated; use -Werror=implicit-function-declaration instead.
Wexceptions
-C++ ObjC++ Var(warn_exceptions) Init(1)
+C++ ObjC++ Var(warn_exceptions) Init(1) Warning
Warn when an exception handler is shadowed by another handler.
Wextra
; undocumented, Very dangerous, but occasionally useful
Winvalid-imported-macros
-C++ ObjC++ Var(warn_imported_macros)
+C++ ObjC++ Var(warn_imported_macros) Warning
Warn about macros that have conflicting header units definitions.
flang-info-include-translate