Retro68/gcc/libvtv/testsuite/libvtv.cc/virtual_inheritance.cc
2014-09-21 19:33:12 +02:00

49 lines
857 B
C++

// { dg-do run }
#include <assert.h>
struct V {
V(): virtual_value(-123) {}
int virtual_value;
virtual int access_vv() { return virtual_value; }
};
struct A: virtual public V {
A():value(123) {}
int value;
virtual int access() { return value; }
};
struct B: virtual public V {
B():value(456) {}
int value;
virtual int access() { return value; }
};
struct C : public A, public B {
C():better_value(789) {}
int better_value;
virtual int access() { return better_value; }
};
struct D: public A, public B {
D():better_virtual_value(-345) {}
int better_virtual_value;
virtual int access_vv() { return better_virtual_value; }
};
int use(B *b)
{
return b->access();
}
int v_use(V * v)
{
return v->access_vv();
}
int main()
{
C c;
assert(v_use(&c) == -123);
D d;
assert(v_use(&d) == -345);
return 0;
}