--- old/src/hotspot/share/prims/jvm.cpp	2019-09-17 11:07:32.283292000 +0200
+++ new/src/hotspot/share/prims/jvm.cpp	2019-09-17 11:07:31.353288000 +0200
@@ -574,10 +574,10 @@
     return NULL;
   }
 
-  ResourceMark rm(THREAD);
   stringStream ss;
   bool ok = BytecodeUtils::get_NPE_message_at(&ss, method, bci);
   if (ok) {
+    ResourceMark rm(THREAD);
     char *result_string = ss.as_string();
     trim_well_known_class_names(result_string);
     oop result = java_lang_String::create_oop_from_str(result_string, CHECK_0);