54 lines
1.0 KiB
C
54 lines
1.0 KiB
C
// Ensure that virtual base upcast and downcasting works on this
|
|
// conversions during virtual function dispatch at ctor/dtor time
|
|
// when dynamic vtable fixups for deltas are needed.
|
|
|
|
int fail = 0;
|
|
|
|
struct BASE1 {
|
|
virtual ~BASE1 () { }
|
|
};
|
|
|
|
class MID;
|
|
|
|
class BASE2 {
|
|
public:
|
|
virtual MID *VFN (){ return 0; }
|
|
};
|
|
|
|
class MIBASE : public BASE1, public BASE2 { };
|
|
|
|
class VBB : public MIBASE {
|
|
public:
|
|
virtual long get_STATE () const = 0;
|
|
void print_STATE() { if (get_STATE () != 87654321) fail = 1; }
|
|
};
|
|
|
|
class VBD : public virtual VBB {
|
|
long STATE;
|
|
public:
|
|
long get_STATE() const { return STATE; }
|
|
VBD() { STATE = 87654321; }
|
|
~VBD() { STATE = 87654321; }
|
|
};
|
|
|
|
class MID : public virtual VBD {
|
|
public:
|
|
MID () { print_STATE(); }
|
|
~MID () { print_STATE(); }
|
|
virtual MID *VFN() { return this; }
|
|
};
|
|
|
|
class LAST : public MID {
|
|
public:
|
|
LAST () { print_STATE(); }
|
|
~LAST () { print_STATE(); }
|
|
};
|
|
|
|
int main() {
|
|
MIBASE *o = new LAST;
|
|
MID *p = o->VFN();
|
|
p->print_STATE();
|
|
delete o;
|
|
return fail;
|
|
}
|