--- old/test/javax/xml/jaxp/unittest/common/TransformationWarningsTest.java	2016-08-30 21:48:17.585013320 +0300
+++ new/test/javax/xml/jaxp/unittest/common/TransformationWarningsTest.java	2016-08-30 21:48:17.505013243 +0300
@@ -80,7 +80,12 @@
         Source xslsrc = new StreamSource(new StringReader(xsl));
 
         // Create factory and transformer
-        TransformerFactory tf = TransformerFactory.newInstance();
+        TransformerFactory tf;
+        // newTransformer() method doc states that different transformer
+        // factories can be used concurrently by different Threads.
+        synchronized (TransformerFactory.class) {
+            tf = TransformerFactory.newInstance();
+        }
         Transformer t = tf.newTransformer(xslsrc);
 
         // Set URI Resolver to return the newly constructed xml