Obtaining a pointer directly to a virtual member function in a C++ class

disp.cc

#include <stdio.h>

class Base {
public:
	virtual void DoThing() { puts("Base::DoThing"); }
	virtual void *GetAddress() { void (Base::*p)() = &Base::DoThing; return (void *)p; }
};

class Derived : public Base {
public:
	void DoThing() { puts("Derived::DoThing"); }
	void *GetAddress() { void (Derived::*p)() = &Derived::DoThing; return (void *)p; }
};

void showMe(Base& b) {
	printf("addr=%p\n", b.GetAddress());
}

int main() {
	Derived d;
	showMe(d);
	return 0;
}

Makefile

# Build disp and dump some info

disp: disp.cc
	g++ -o $@ -no-pie $<

dump: disp
	./disp
	nm disp |fgrep DoThing