--- old/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp	2014-12-10 15:32:31.040117295 +0100
+++ new/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp	2014-12-10 15:32:30.928121063 +0100
@@ -308,7 +308,7 @@
 
   inline ParScanThreadState& thread_state(int i);
 
-  void trace_promotion_failed(YoungGCTracer& gc_tracer);
+  void trace_promotion_failed(const YoungGCTracer* gc_tracer);
   void reset(int active_workers, bool promotion_failed);
   void flush();
 
@@ -357,10 +357,10 @@
   return ((ParScanThreadState*)_data)[i];
 }
 
-void ParScanThreadStateSet::trace_promotion_failed(YoungGCTracer& gc_tracer) {
+void ParScanThreadStateSet::trace_promotion_failed(const YoungGCTracer* gc_tracer) {
   for (int i = 0; i < length(); ++i) {
     if (thread_state(i).promotion_failed()) {
-      gc_tracer.report_promotion_failed(thread_state(i).promotion_failed_info());
+      gc_tracer->report_promotion_failed(thread_state(i).promotion_failed_info());
       thread_state(i).promotion_failed_info().reset();
     }
   }
@@ -899,7 +899,7 @@
   _next_gen->promotion_failure_occurred();
 
   // Trace promotion failure in the parallel GC threads
-  thread_state_set.trace_promotion_failed(_gc_tracer);
+  thread_state_set.trace_promotion_failed(gc_tracer());
   // Single threaded code may have reported promotion failure to the global state
   if (_promotion_failed_info.has_failed()) {
     _gc_tracer.report_promotion_failed(_promotion_failed_info);
@@ -942,7 +942,7 @@
   assert(to()->is_empty(), "Else not collection_attempt_is_safe");
 
   _gc_tracer.report_gc_start(gch->gc_cause(), _gc_timer->gc_start());
-  gch->trace_heap_before_gc(&_gc_tracer);
+  gch->trace_heap_before_gc(gc_tracer());
 
   init_assuming_no_promotion_failure();
 
@@ -993,7 +993,7 @@
 
   // Trace and reset failed promotion info.
   if (promotion_failed()) {
-    thread_state_set.trace_promotion_failed(_gc_tracer);
+    thread_state_set.trace_promotion_failed(gc_tracer());
   }
 
   // Process (weak) reference objects found during scavenge.
@@ -1087,7 +1087,7 @@
   }
   rp->verify_no_references_recorded();
 
-  gch->trace_heap_after_gc(&_gc_tracer);
+  gch->trace_heap_after_gc(gc_tracer());
   _gc_tracer.report_tenuring_threshold(tenuring_threshold());
 
   _gc_timer->register_gc_end();