language: C++11 (gcc-4.7.2)
date: 627 days 12 hours ago
link:
visibility: public 
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#include <stdio.h>
 
class A{ int dummy; };
 
class B{
public:
   void check(const A &a){
     if((void*)this != (void*)&a){
      printf("not equal\n");
     }
     else{
      printf("equal\n");
     }
   }
  int dummy;
};
 
class C : public A, public B{};
class D : public B{};
 
 
int main(int argc, char** argv)
{
C c1;
C c2;
 
c1.check(c2);
c1.check(c1);
 
return 0;
}