On Wed, Aug 10, 2022 at 6:20 PM Paul Koning via Gcc <gcc@gcc.gnu.org> wrote: > > There's a C++ problem I keep running into, in a very large body of software > with lots of subclassing. > > There's a base class that defines a set of interface methods, not all pure > virtual (some define the default behavior). A number of subclasses override > some but not all of these. > > Now I find myself changing the argument list of some of these methods, so I > have to change the base class definitions and also track down all the > subclass redefinitions. If I miss one of the latter, that subclass method is > no longer called (it now just looks like an unrelated method with a different > argument list that isn't used anywhere). Finding these things can be hard > and time consuming. > > It would be helpful to have some way to mark a method as "this is supposed to > be an override of a base class method", in other words "warn me if this > method doesn't override some method in a base class".
C++11's overload keyword sounds exactly what you want. https://en.cppreference.com/w/cpp/language/override Thanks, Andrew Pinski > > Does that sound like a possible thing to do, perhaps with some __attribute__ > magic? Would it be interesting? > > paul >
