Fixed a bug in Ruby's object tracking functionality. Previously, an object could be returned even if it did not have the correct type. This could occur if a factory class' creation method had a signature returning a base type (like geometry) but in reality a subclass (like Point) was returned. In that case, it would then be impossible to implement a "downcast" method and get back a Ruby object of type Point. Also updated the test-suite to test this situation.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@8861 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/ruby/track_objects.i

@@ -18,6 +18,10 @@
 
 %apply SWIGTYPE *DISOWN {Foo* ownedFoo};
 
+
+%trackobjects ItemA;
+%trackobjects ItemB;
+
 %inline %{
 
 class Foo
@@ -92,4 +96,30 @@ public:
 		unowned_ = foo;
 	}
 };
+
+class ItemA
+{
+};
+
+class ItemB: public ItemA
+{
+public:
+};
+
+ItemB* downcast(ItemA* item)
+{
+	return static_cast<ItemB*>(item);
+}
+
+class Factory
+{
+public:
+	Factory() {}
+
+	ItemA* createItem()
+	{
+		return new ItemB;
+	}
+};
+
 %}