--- old/src/share/vm/gc/g1/g1HeapTransition.cpp	2016-03-08 15:19:40.498516313 -0500
+++ new/src/share/vm/gc/g1/g1HeapTransition.cpp	2016-03-08 15:19:39.710471815 -0500
@@ -59,7 +59,7 @@
 class DetailedUsageClosure: public HeapRegionClosure {
 public:
   DetailedUsage _usage;
-  bool doHeapRegion(HeapRegion* r) {
+  void doHeapRegion(HeapRegion* r) {
     if (r->is_old()) {
       _usage._old_used += r->used();
       _usage._old_region_count++;
@@ -75,7 +75,6 @@
     } else {
       assert(r->used() == 0, "Expected used to be 0 but it was " SIZE_FORMAT, r->used());
     }
-    return false;
   }
 };