--- a/src/hotspot/share/runtime/fieldType.cpp	Wed Mar 07 10:58:59 2018 +0100
+++ b/src/hotspot/share/runtime/fieldType.cpp	Wed Mar 07 09:32:46 2018 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -31,14 +31,6 @@
 #include "runtime/fieldType.hpp"
 #include "runtime/signature.hpp"
 
-void FieldType::skip_optional_size(Symbol* signature, int* index) {
-  jchar c = signature->byte_at(*index);
-  while (c >= '0' && c <= '9') {
-    *index = *index + 1;
-    c = signature->byte_at(*index);
-  }
-}
-
 BasicType FieldType::basic_type(Symbol* signature) {
   return char2type(signature->byte_at(0));
 }
@@ -78,11 +70,9 @@
   assert(basic_type(signature) == T_ARRAY, "must be array");
   int index = 1;
   int dim   = 1;
-  skip_optional_size(signature, &index);
   while (signature->byte_at(index) == '[') {
     index++;
     dim++;
-    skip_optional_size(signature, &index);
   }
   ResourceMark rm;
   char *element = signature->as_C_string() + index;

--- a/src/hotspot/share/runtime/fieldType.hpp	Wed Mar 07 10:58:59 2018 +0100
+++ b/src/hotspot/share/runtime/fieldType.hpp	Wed Mar 07 09:32:46 2018 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -51,7 +51,6 @@
 
 class FieldType: public AllStatic {
  private:
-  static void skip_optional_size(Symbol* signature, int* index);
   static bool is_valid_array_signature(Symbol* signature);
  public:
 

--- a/src/hotspot/share/runtime/signature.cpp	Wed Mar 07 10:58:59 2018 +0100
+++ b/src/hotspot/share/runtime/signature.cpp	Wed Mar 07 09:32:46 2018 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -54,14 +54,6 @@
   _index++;
 }
 
-
-void SignatureIterator::skip_optional_size() {
-  Symbol* sig = _signature;
-  char c = sig->byte_at(_index);
-  while ('0' <= c && c <= '9') c = sig->byte_at(++_index);
-}
-
-
 int SignatureIterator::parse_type() {
   // Note: This function could be simplified by using "return T_XXX_size;"
   //       instead of the assignment and the break statements. However, it
@@ -99,11 +91,9 @@
       break;
     case '[':
       { int begin = ++_index;
-        skip_optional_size();
         Symbol* sig = _signature;
         while (sig->byte_at(_index) == '[') {
           _index++;
-          skip_optional_size();
         }
         if (sig->byte_at(_index) == 'L') {
           while (sig->byte_at(_index++) != ';') ;
@@ -250,10 +240,8 @@
       case '[':
         {
           int begin = ++_index;
-          skip_optional_size();
           while (sig->byte_at(_index) == '[') {
             _index++;
-            skip_optional_size();
           }
           if (sig->byte_at(_index) == 'L') {
             while (sig->byte_at(_index++) != ';') ;

--- a/src/hotspot/share/runtime/signature.hpp	Wed Mar 07 10:58:59 2018 +0100
+++ b/src/hotspot/share/runtime/signature.hpp	Wed Mar 07 09:32:46 2018 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -52,7 +52,6 @@
   BasicType    _return_type;
 
   void expect(char c);
-  void skip_optional_size();
   int  parse_type();                   // returns the parameter size in words (0 for void)
   void check_signature_end();