src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -44,10 +44,11 @@
   }
 
   void do_klass(Klass* k) {
     // Collect all jclasses
     _classStack.push((jclass) _env->jni_reference(Handle(_cur_thread, k->java_mirror())));
+    Klass::ensure_klass_alive(k->java_mirror());
   }
 
   int extract(jclass* result_list) {
     // The size of the Stack will be 0 after extract, so get it here
     int count = (int)_classStack.size();