+++ /dev/null
-// Author: Alfred Miniarik <a8601248@unet.univie.ac.at>
-// test of dynamic_cast
-// runtime detecting of valid
-// downcasts within nonpublic
-// baseclasses.
-
-extern "C" void abort();
-extern "C" int printf (const char *, ...);
-
-static int errors = 0;
-
-void error(int i)
-{
- printf("Error %i\n",i);
- errors++;
-}
-
-// 1. downcast
-// 1.1 single inheritance case
-
-struct A {virtual ~A(){};int i;};
-struct B : A {int i;};
-struct C : B {int i;};
-struct CC : C {};
-class D : C {int i;};
-
-struct E : D {int i;};
-class F : E {int i;};
-
-void
-test01 ()
-{
- D d;
- if((C*)&d != dynamic_cast<C*> ((A*)&d)) error(1);
- if((C*)&d != dynamic_cast<C*> ((B*)&d)) error(2);
- if((B*)&d != dynamic_cast<B*> ((A*)&d)) error(3);
-
- E e;
- if((C*)&e != dynamic_cast<C*> ((A*)&e)) error(4);
-
- F f;
- if((C*)&f != dynamic_cast<C*> ((B*)&f)) error(5);
- if((B*)&f != dynamic_cast<B*> ((A*)&f)) error(6);
- if((E*)&f != dynamic_cast<E*> ((D*)&f)) error(7);
- if(dynamic_cast<E*> ((C*)&f)) error(8); //counter example
-}
-
-// 1.2 multiple inheritance case
-
-struct G : CC, F{};
-
-void
-test02 ()
-{
- G g;
- if((B*)(F*)&g != dynamic_cast<B*> ((A*)(F*)&g)) error(9);
- if(dynamic_cast<D*> ((A*)(F*)&g)) error(10);
- if(dynamic_cast<G*> ((B*)(F*)&g)) error(11);
-}
-
-// 2. crosscast (always fail)
-
-struct I : C{};
-struct J : F{};
-struct K : I, J{};
-class L : K{};
-
-void
-test03 ()
-{
- L l;
- if(dynamic_cast<J*> ((I*)&l)) error(12);
- if(dynamic_cast<J*> ((E*)&l)) error(13);
- if(dynamic_cast<I*> ((J*)&l)) error(14);
-}
-
-int
-main ()
-{
- test01();
- test02();
- test03();
- return errors ? 1 : 0;
-}