--- a/src/hotspot/share/memory/metaspaceShared.hpp	Wed Nov 14 12:25:15 2018 -0800
+++ b/src/hotspot/share/memory/metaspaceShared.hpp	Wed Nov 14 18:49:02 2018 -0500
@@ -100,6 +100,8 @@
   }
   static void commit_shared_space_to(char* newtop) NOT_CDS_RETURN;
   static size_t core_spaces_size() {
+    assert(DumpSharedSpaces || UseSharedSpaces, "sanity");
+    assert(_core_spaces_size != 0, "sanity");
     return _core_spaces_size;
   }
   static void initialize_dumptime_shared_and_meta_spaces() NOT_CDS_RETURN;