4 extern "C" int printf(const char *, ...);
5 extern "C" void exit(int);
9 virtual int test() { return 0; }
18 virtual void test2(int a) { }
21 class RR : public RRB {
28 virtual void real(int a) {
34 class R : public RL, public RR {
36 virtual void test3(int a) { }
37 virtual void test2(int a) { }
43 class C : public L, public R {
50 virtual void real(int a) {