diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/java.xml/share/classes/com/sun/org/apache/xerces/internal/jaxp/validation/WrappedSAXException.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.xml/share/classes/com/sun/org/apache/xerces/internal/jaxp/validation/WrappedSAXException.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,48 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.sun.org.apache.xerces.internal.jaxp.validation;
+
+import org.xml.sax.SAXException;
+
+/**
+ * Wraps {@link SAXException} and make it an unchecked exception.
+ * <p>
+ * Xerces XNI doesn't allow {@link SAXException} to be thrown.
+ * So when the user-supplied error handler throws it,
+ * it needs to be tunneled through Xerces.
+ *
+ * <p>
+ * It is a bug if this exception "leaks" to the application.
+ *
+ * FIXME: use XNIException for this purpose. It's already doing this
+ * kind of SAXException tunneling.
+ *
+ * @author
+ *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
+ */
+public class WrappedSAXException extends RuntimeException {
+    public final SAXException exception;
+
+    WrappedSAXException( SAXException e ) {
+        this.exception = e;
+    }
+}