diff -r 000000000000 -r 6474c204b198 ipc/ipdl/test/cxx/TestDesc.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/ipdl/test/cxx/TestDesc.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,105 @@
+#include "TestDesc.h"
+
+#include "IPDLUnitTests.h"      // fail etc.
+
+namespace mozilla {
+namespace _ipdltest {
+
+//-----------------------------------------------------------------------------
+// parent
+void
+TestDescParent::Main()
+{
+    PTestDescSubParent* p = CallPTestDescSubConstructor(0);
+    if (!p)
+        fail("can't allocate Sub");
+
+    PTestDescSubsubParent* pp = p->CallPTestDescSubsubConstructor();
+    if (!pp)
+        fail("can't allocate Subsub");
+
+    if (!SendTest(pp))
+        fail("can't send Subsub");
+}
+
+bool
+TestDescParent::RecvOk(PTestDescSubsubParent* a)
+{
+    if (!a)
+        fail("didn't receive Subsub");
+
+    if (!PTestDescSubsubParent::Call__delete__(a))
+        fail("deleting Subsub");
+
+    Close();
+
+    return true;
+}
+
+
+PTestDescSubParent*
+TestDescParent::AllocPTestDescSubParent(PTestDescSubsubParent* dummy) {
+    if (dummy)
+        fail("actor supposed to be null");
+    return new TestDescSubParent();
+}
+bool
+TestDescParent::DeallocPTestDescSubParent(PTestDescSubParent* actor)
+{
+    delete actor;
+    return true;
+}
+
+PTestDescSubsubParent*
+TestDescSubParent::AllocPTestDescSubsubParent()
+{
+    return new TestDescSubsubParent();
+}
+bool
+TestDescSubParent::DeallocPTestDescSubsubParent(PTestDescSubsubParent* actor)
+{
+    delete actor;
+    return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// child
+
+bool
+TestDescChild::RecvTest(PTestDescSubsubChild* a)
+{
+    if (!a)
+        fail("didn't receive Subsub");
+    if (!SendOk(a))
+        fail("couldn't send Ok()");
+    return true;
+}
+
+PTestDescSubChild*
+TestDescChild::AllocPTestDescSubChild(PTestDescSubsubChild* dummy) {
+    if (dummy)
+        fail("actor supposed to be null");
+    return new TestDescSubChild();
+}
+bool
+TestDescChild::DeallocPTestDescSubChild(PTestDescSubChild* actor)
+{
+    delete actor;
+    return true;
+}
+
+PTestDescSubsubChild*
+TestDescSubChild::AllocPTestDescSubsubChild()
+{
+    return new TestDescSubsubChild();
+}
+bool
+TestDescSubChild::DeallocPTestDescSubsubChild(PTestDescSubsubChild* actor)
+{
+    delete actor;
+    return true;
+}
+
+} // namespace _ipdltest
+} // namespace mozilla