Testcase of private nested class usage causing segfault

Needs fixing for C#/Java

Examples/test-suite/nested_private.i

@@ -0,0 +1,32 @@
+%module nested_private
+
+// segfault due to private nested class usage
+
+%inline %{
+#include <string>
+class MotorCar {
+
+  struct DesignOpinion {
+    std::string reason;
+  };
+
+public:
+  struct WindScreen {
+    WindScreen(bool opaque) : opaque(opaque) {}
+    DesignOpinion Opinion();
+  private:
+    bool opaque;
+  };
+  
+  std::string WindScreenOpinion() {
+    return MotorCar::WindScreen(true).Opinion().reason;
+  }
+};
+
+MotorCar::DesignOpinion MotorCar::WindScreen::Opinion() {
+  DesignOpinion opinion;
+  opinion.reason = !opaque ? "great design" : "you can't see out the windscreen";
+  return opinion;
+}
+
+%}