src/share/vm/opto/library_call.cpp

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2017, 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.

@@ -1666,10 +1666,13 @@
   if (!is_store && value->is_Con() && index->is_Con()) {
     return false;
   }
 
   Node* adr = array_element_address(value, index, T_CHAR);
+  if (adr->is_top()) {
+    return false;
+  }
   if (is_store) {
     (void) store_to_memory(control(), adr, ch, T_CHAR, TypeAryPtr::BYTES, MemNode::unordered,
                            false, false, true /* mismatched */);
   } else {
     ch = make_load(control(), adr, TypeInt::CHAR, T_CHAR, TypeAryPtr::BYTES, MemNode::unordered,