--- old/src/hotspot/share/memory/memRegion.hpp	2020-02-14 18:02:39.535627602 +0100
+++ new/src/hotspot/share/memory/memRegion.hpp	2020-02-14 18:02:39.323624659 +0100
@@ -92,6 +92,9 @@
   size_t word_size() const { return _word_size; }
 
   bool is_empty() const { return word_size() == 0; }
+
+  // Creates and initializes an array of MemRegions of the given length.
+  static MemRegion* create(uint length, MEMFLAGS flags);
 };
 
 // For iteration over MemRegion's.