8319548: Unexpected internal name for Filler array klass causes error in VisualVM

Co-authored-by: Tomáš Hůrka <[email protected]>
Reviewed-by: ayang, dholmes

Author: Thomas Schatzl

src/hotspot/share/memory/universe.cpp

@@ -338,7 +338,7 @@ void Universe::genesis(TRAPS) {
       // Initialization of the fillerArrayKlass must come before regular
       // int-TypeArrayKlass so that the int-Array mirror points to the
       // int-TypeArrayKlass.
-      _fillerArrayKlassObj = TypeArrayKlass::create_klass(T_INT, "Ljdk/internal/vm/FillerArray;", CHECK);
+      _fillerArrayKlassObj = TypeArrayKlass::create_klass(T_INT, "[Ljdk/internal/vm/FillerElement;", CHECK);
       for (int i = T_BOOLEAN; i < T_LONG+1; i++) {
         _typeArrayKlassObjs[i] = TypeArrayKlass::create_klass((BasicType)i, CHECK);
       }

test/hotspot/jtreg/gc/TestFillerObjectInstantiation.java

@@ -45,6 +45,6 @@ private static void testInstantiationFails(String classname) throws Exception {
 
     public static void main(String[] args) throws Exception {
         testInstantiationFails("jdk.internal.vm.FillerObject");
-        testInstantiationFails("jdk.internal.vm.FillerArray");
+        testInstantiationFails("jdk.internal.vm.FillerElement");
     }
 }