1 files changed, 85 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.old-deja/g++.other/dyncast2.C b/gcc/testsuite/g++.old-deja/g++.other/dyncast2.C
new file mode 100644
index 000000000..bea82cb46
--- /dev/null
+++ b/gcc/testsuite/g++.old-deja/g++.other/dyncast2.C
@@ -0,0 +1,85 @@
+// { dg-do run  }
+// 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;
+}