1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.old-deja/g++.other/dyncast4.C b/gcc/testsuite/g++.old-deja/g++.other/dyncast4.C
new file mode 100644
index 000000000..a49ef4b67
--- /dev/null
+++ b/gcc/testsuite/g++.old-deja/g++.other/dyncast4.C
@@ -0,0 +1,28 @@
+// { dg-do run  }
+// Author: Alfred Miniarik <a8601248@unet.univie.ac.at>
+
+// Even in a derived class, a private base cannot be dynamically downcasted
+// from.
+
+extern "C" void abort();
+
+struct A {
+  virtual ~A () {}
+};
+
+struct B : private A {
+  B* a2b (A* objp)
+  {
+    return dynamic_cast<B*> (objp);
+  }
+};
+
+int
+main ()
+{
+  B b;
+  A* aptr = (A*) &b;
+  if (dynamic_cast <B*> (aptr)) abort ();
+  if (b.a2b (aptr)) abort();
+  return 0;
+}