Is casting the constness of member function pointers defined in C++? Is the following valid code?
struct T {
void foo(int i) const { std::cout << i << std::endl;};
};
void (T::*f1)(int) const = &T::foo;
void (T::*f2)(int) = reinterpret_cast<void (T::*)(int)>(f1);
T t;
(t.*f2)(1);
Update:
The reason why I need this is that I'm writing a function that accepts both an object and a member function pointer to that object. I need a version for const objects (accepting only const functions) and a normal one. Since I don't want duplicate code, my idea was to put the actual code in the non-const version and call it from the const one, casting away any consts.