--- a/c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/logging/LoggingProxy.java	Fri Apr 08 13:47:56 2011 +0200
+++ b/c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/logging/LoggingProxy.java	Mon Apr 11 10:37:24 2011 +0200
@@ -22,6 +22,8 @@
 
 import java.lang.reflect.*;
 
+import com.sun.hotspot.c1x.server.*;
+
 /**
  * A java.lang.reflect proxy that hierarchically logs all method invocations along with their parameters and return values.
  *
@@ -64,8 +66,12 @@
         return result;
     }
 
+    /**
+     * The object returned by this method will implement all interfaces that are implemented by delegate.
+     */
     public static <T> T getProxy(Class<T> interf, T delegate) {
-        Object obj = Proxy.newProxyInstance(interf.getClassLoader(), new Class[] {interf}, new LoggingProxy<T>(delegate));
+        Class<?>[] interfaces = ReplacingStreams.getAllInterfaces(delegate.getClass());
+        Object obj = Proxy.newProxyInstance(interf.getClassLoader(), interfaces, new LoggingProxy<T>(delegate));
         return interf.cast(obj);
     }
 }