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diff --git a/libcxxabi/test/test_aux_runtime.pass.cpp b/libcxxabi/test/test_aux_runtime.pass.cpp
new file mode 100644
index 00000000000..5506ee335f9
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+++ b/libcxxabi/test/test_aux_runtime.pass.cpp
@@ -0,0 +1,64 @@
+//===-------------------------- test_aux_runtime.cpp ----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <typeinfo>
+#include <iostream>
+
+//  Test taken from 5.2.8.2
+//  When typeid is applied to a glvalue expression whose type is a polymorphic 
+//  class type, (10.3), the result refers to a std::type_info object 
+//  representing the type of the most derived object (1.8) (that is, the 
+//  dynamic type) to which the glvalue refers. If the glvalue expression is 
+//  obtained by applying the unary * operator to a pointer(68) and the pointer 
+//  is a null pointer value (4.10), the typeid expression throws the 
+//  std::bad_typeid exception (18.7.3).
+//
+//  68) If p is an expression of pointer type, then *p, (*p), *(p), 
+//      ((*p)), *((p)), and so on all meet this requirement.
+bool bad_typeid_test () {
+    class A { virtual void f() {}}; 
+    class B { virtual void g() {}}; 
+    
+    B *bp = NULL;
+    try {bool b = typeid(*bp) == typeid (A); }
+    catch ( const std::bad_typeid &bc ) { return true; }
+    return false;
+    }
+    
+
+//  The value of a failed cast to pointer type is the null pointer value of 
+//  the required result type. A failed cast to reference type throws 
+//  std::bad_cast (18.7.2).
+bool bad_cast_test () {
+    class A { virtual void f() {}};
+    class B { virtual void g() {}};
+    class D : public virtual A, private B {};   
+
+    D d;
+    B *bp = (B*)&d;     // cast needed to break protection
+    try { D &dr = dynamic_cast<D&> (*bp); }
+    catch ( const std::bad_cast &bc ) { return true; }
+    return false;
+    }
+    
+int main ( int argc, char *argv [] ) {
+    int ret_val = 0;
+    
+    if ( !bad_typeid_test ()) {
+        std::cerr << "TypeID test failed!" << std::endl;
+        ret_val = 1;
+    }
+    
+    if ( !bad_cast_test ()) {
+        std::cerr << "Bad cast test failed!" << std::endl;
+        ret_val = 1;
+    }
+    
+    return ret_val;
+    }