diff -r 8f92795b39e5 -r 89c44961a84f src/hotspot/share/services/mallocTracker.hpp
--- a/src/hotspot/share/services/mallocTracker.hpp	Fri Nov 15 18:31:55 2019 -0500
+++ b/src/hotspot/share/services/mallocTracker.hpp	Fri Nov 15 21:19:56 2019 -0500
@@ -70,9 +70,8 @@
     }
   }
 
-  inline void resize(ssize_t sz) {
+  inline void resize(long sz) {
     if (sz != 0) {
-      assert(sz >= 0 || _size >= size_t(-sz), "Must be");
       Atomic::add(size_t(sz), &_size);
       DEBUG_ONLY(_peak_size = MAX2(_size, _peak_size);)
     }
@@ -114,7 +113,7 @@
     _arena.deallocate(0);
   }
 
-  inline void record_arena_size_change(ssize_t sz) {
+  inline void record_arena_size_change(long sz) {
     _arena.resize(sz);
   }
 
@@ -362,7 +361,7 @@
     MallocMemorySummary::record_arena_free(flags);
   }
 
-  static inline void record_arena_size_change(ssize_t size, MEMFLAGS flags) {
+  static inline void record_arena_size_change(int size, MEMFLAGS flags) {
     MallocMemorySummary::record_arena_size_change(size, flags);
   }
  private: