diff -r 270abce77942 -r faf791c5a710 src/java.sql.rowset/share/classes/javax/sql/rowset/serial/SerialClob.java
--- a/src/java.sql.rowset/share/classes/javax/sql/rowset/serial/SerialClob.java	Wed Sep 25 08:29:03 2019 -0700
+++ b/src/java.sql.rowset/share/classes/javax/sql/rowset/serial/SerialClob.java	Wed Sep 25 09:37:18 2019 -0700
@@ -68,6 +68,7 @@
      * Internal Clob representation if SerialClob is initialized with a
      * Clob. Null if SerialClob is initialized with a char[].
      */
+    @SuppressWarnings("serial")  // Not statically typed as Serializable; checked in writeObject
     private Clob clob;
 
     /**