Another twist on Getters and Setters I just thought of:

class Foo
{
   int bar;
public:
   int bar() { return bar; };
   void bar(int x) { bar = x; };
};

This works fine for some code:

Foo foo;
foo.bar = 3;
int x = foo.bar;

But we also need to handle:

foo.bar += 7;

Which means that the compiler will need to expand it as

foo.bar = foo.bar + 7;