--- old/src/share/vm/utilities/ostream.hpp	2015-09-09 16:12:53.903861755 +0200
+++ new/src/share/vm/utilities/ostream.hpp	2015-09-09 16:12:53.791861759 +0200
@@ -28,7 +28,6 @@
 #include "memory/allocation.hpp"
 #include "runtime/timer.hpp"
 
-class GCId;
 DEBUG_ONLY(class ResourceMark;)
 
 // Output streams for printing