src/java.xml/share/classes/com/sun/org/apache/xerces/internal/impl/XMLDocumentScannerImpl.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
  */
 
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with

@@ -741,11 +741,11 @@
 
             //System.out.println("fEntityScanner = " + fEntityScanner);
             // scan XMLDecl
             try {
                 if (fEntityScanner.skipString(XMLDECL)) {
-                    if (fEntityScanner.peekChar() == ' ') {
+                    if (XMLChar.isSpace(fEntityScanner.peekChar())) {
                         fMarkupDepth++;
                         scanXMLDeclOrTextDecl(false);
                     } else {
                         // PI, reset position
                         fEntityManager.fCurrentEntity.position = 0;