--- a/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.hpp	Tue Jul 02 13:45:08 2019 +0200
+++ b/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.hpp	Wed Jul 03 14:33:40 2019 +0000
@@ -1112,7 +1112,6 @@
   double occupancy() const { return ((double)used())/((double)capacity()); }
   size_t contiguous_available() const;
   size_t unsafe_max_alloc_nogc() const;
-  size_t used_stable() const;
 
   // over-rides
   MemRegion used_region_at_save_marks() const;