*** old/src/share/vm/memory/defNewGeneration.cpp	Mon Aug 12 15:28:38 2013
--- new/src/share/vm/memory/defNewGeneration.cpp	Mon Aug 12 15:28:37 2013

*** 565,576 ****
--- 565,574 ----
    _gc_timer->register_gc_start(os::elapsed_counter());
    DefNewTracer gc_tracer;
    gc_tracer.report_gc_start(gch->gc_cause(), _gc_timer->gc_start());
  
    _next_gen = gch->next_gen(this);
    assert(_next_gen != NULL,
      "This must be the youngest gen, and not the only gen");
  
    // If the next generation is too full to accommodate promotion
    // from this generation, pass on collection; let the next generation
    // do it.
    if (!collection_attempt_is_safe()) {

*** 899,910 ****
--- 897,906 ----
      return false;
    }
    if (_next_gen == NULL) {
      GenCollectedHeap* gch = GenCollectedHeap::heap();
      _next_gen = gch->next_gen(this);
      assert(_next_gen != NULL,
             "This must be the youngest gen, and not the only gen");
    }
    return _next_gen->promotion_attempt_is_safe(used());
  }
  
  void DefNewGeneration::gc_epilogue(bool full) {