+++ /dev/null
-// Author: Alfred Miniarik <a8601248@unet.univie.ac.at>
-// test of dynamic_cast
-// runtime detecting of nonpublic
-// inheritance within a cast
-// and therefor failing with result 0.
-
-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(){}};
-struct AA : A {};
-struct B : A {};
-struct BB : B {};
-class C : B {};
-struct D : C {};
-
-struct CC : B {};
-class DD : CC {};
-
-class CCC : protected B {};
-class DDD : protected CCC {};
-
-void
-test01 ()
-{
- D d;
- if(dynamic_cast<D*> ((A*)&d)) error(1);
- if(dynamic_cast<D*> ((B*)&d)) error(2);
- if(&d != dynamic_cast<D*> ((C*)&d)) error(3); //counter example
- if(dynamic_cast<C*> ((B*)&d)) error(4);
-
- DD dd;
- if(dynamic_cast<DD*> ((A*)&dd)) error(5);
- if(dynamic_cast<DD*> ((B*)&dd)) error(6);
-
- DDD ddd;
- if(dynamic_cast<DDD*> ((A*)&ddd)) error(7);
- if(dynamic_cast<DDD*> ((B*)&ddd)) error(8);
- if(dynamic_cast<CCC*> ((B*)&ddd)) error(9);
-}
-
-// 1.2. multiple inheritance case
-// 1.2.1. all bases are public
-
-struct E : D, CC {};
-struct EE : CC, D {}; //Will search in reverse order.
-
-void
-test02 ()
-{
- E e;
- if(dynamic_cast<E*> ((A*)(D*)&e)) error(10);
- if(dynamic_cast<E*> ((B*)(D*)&e)) error(11);
- if(&e != dynamic_cast<E*> ((C*)(D*)&e)) error(12); //counter example
- if(&e != dynamic_cast<E*> ((B*)(CC*)&e)) error(13); //counter example
- if((CC*)&e != dynamic_cast<CC*> ((B*)(CC*)&e)) error(14); //counter example
-
- EE ee;
- if(dynamic_cast<EE*> ((A*)(D*)&ee)) error(15);
- if(dynamic_cast<EE*> ((B*)(D*)&ee)) error(16);
- if(&ee != dynamic_cast<EE*> ((C*)(D*)&ee)) error(17); //counter example
- if(&ee != dynamic_cast<EE*> ((B*)(CC*)&ee)) error(18); //counter example
- if((CC*)&ee != dynamic_cast<CC*> ((B*)(CC*)&ee)) error(19); //counter example
-}
-
-// 1.2.2 one or more branches are nonpublic
-
-struct X : private BB, E {};
-struct Y : AA, private B {};
-
-class XX : BB, E {};
-
-void
-test03 ()
-{
- X x;
- if(&x != dynamic_cast<X*>((B*)(CC*)(E*)&x)) error(20); //counter example
- XX xx;
- if(dynamic_cast<XX*>((B*)(CC*)(E*)&xx)) error(21);
- Y y;
- if(dynamic_cast<Y*>((B*)&y)) error (22);
- if(dynamic_cast<Y*>((A*)(B*)&y)) error (23);
-}
-
-// 2. crosscast
-
-struct J {virtual ~J(){};};
-struct K : CC, private J {};
-class KK : J, CC{};
-
-void
-test04 ()
-{
- E e;
- if(dynamic_cast<CC*> ((B*)(D*)&e)) error(24);
- if((CC*)&e != dynamic_cast<CC*> ((C*)(D*)&e)) error(25); //counter example
- K k;
- if(dynamic_cast<J*> ((B*)&k)) error(26);
- KK kk;
- if(dynamic_cast<J*> ((CC*)&kk)) error(27);
-}
-
-int
-main ()
-{
- test01();
- test02();
- test03();
- test04();
- return errors ? 1 : 0;
-}