--- a/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp	Tue May 14 11:28:44 2019 -0400
+++ b/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp	Tue May 14 11:29:18 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, 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
@@ -357,7 +357,6 @@
   }
 };
 
-static unsigned int unused_hash = 0;
 static const char value_name[] = "value";
 static bool has_annotation(const InstanceKlass* ik, const Symbol* annotation_type, bool& value) {
   assert(annotation_type != NULL, "invariant");
@@ -372,7 +371,7 @@
     if (annotation_iterator.type() == annotation_type) {
       // target annotation found
       static const Symbol* value_symbol =
-        SymbolTable::lookup_only(value_name, sizeof value_name - 1, unused_hash);
+        SymbolTable::probe(value_name, sizeof value_name - 1);
       assert(value_symbol != NULL, "invariant");
       const AnnotationElementIterator element_iterator = annotation_iterator.elements();
       while (element_iterator.has_next()) {
@@ -412,7 +411,7 @@
   }
   static Symbol* jdk_jfr_module_symbol = NULL;
   if (jdk_jfr_module_symbol == NULL) {
-    jdk_jfr_module_symbol = SymbolTable::lookup_only(jdk_jfr_module_name, sizeof jdk_jfr_module_name - 1, unused_hash);
+    jdk_jfr_module_symbol = SymbolTable::probe(jdk_jfr_module_name, sizeof jdk_jfr_module_name - 1);
     if (jdk_jfr_module_symbol == NULL) {
       return false;
     }
@@ -447,7 +446,7 @@
   assert(!untypedEventHandler, "invariant");
   static const Symbol* registered_symbol = NULL;
   if (registered_symbol == NULL) {
-    registered_symbol = SymbolTable::lookup_only(registered_constant, sizeof registered_constant - 1, unused_hash);
+    registered_symbol = SymbolTable::probe(registered_constant, sizeof registered_constant - 1);
     if (registered_symbol == NULL) {
       untypedEventHandler = true;
       return false;
@@ -1167,7 +1166,7 @@
                                 u2& added_cp_entries,
                                 TRAPS) {
   assert(utf8_constant != NULL, "invariant");
-  TempNewSymbol utf8_sym = SymbolTable::new_symbol(utf8_constant, THREAD);
+  TempNewSymbol utf8_sym = SymbolTable::new_symbol(utf8_constant);
   // lookup existing
   const int utf8_orig_idx = utf8_info_index(ik, utf8_sym, THREAD);
   if (utf8_orig_idx != invalid_cp_index) {