Test cases for sharing virtual base vptrs 3 of 3.

[Coleen Phillimore]

/*
Test case for sharing virtual bases.
In Most_Derived, share the vptr with
Interface2 but not Interface3, since
Interface3 is indirectly inherited.

Should get:
(long)(Interface1 *)dd - (long)dd = 0
(long)(Interface2 *)dd - (long)dd = 0
(long)(Interface3 *)dd - (long)dd = 8
(long)(Concrete1 *)dd - (long)dd = 8
*/

struct Interface1 {
    virtual void foo();
};
struct Interface2 : virtual Interface1 {
	virtual void bar();
};
struct Interface3 : virtual Interface2 {
	virtual void baz();
};

struct Concrete1 : virtual Interface3 {
	virtual void foo();
	int i; // important.
};

struct Most_Derived : virtual Interface1, 
		      virtual Interface2,
		      virtual Concrete1 {
	virtual void bar();
};

void Interface1::foo() {}
void Interface2::bar() {}
void Interface3::baz() {}
void Concrete1::foo() {}
void Most_Derived::bar() {}


extern "C" int printf(const char *,...);
#define EVAL(EXPR) printf( #EXPR " = %d\n", (EXPR) );
main()
{
  Most_Derived *dd = new Most_Derived;
  EVAL((long)(Interface1 *)dd - (long)dd);
  EVAL((long)(Interface2 *)dd - (long)dd);
  EVAL((long)(Interface3 *)dd - (long)dd);
  EVAL((long)(Concrete1 *)dd - (long)dd);
}