--- old/src/java.base/share/classes/java/lang/StackOverflowError.java	2019-08-27 17:27:35.314324386 -0700
+++ new/src/java.base/share/classes/java/lang/StackOverflowError.java	2019-08-27 17:27:35.130324386 -0700
@@ -34,6 +34,7 @@
  */
 public
 class StackOverflowError extends VirtualMachineError {
+    @java.io.Serial
     private static final long serialVersionUID = 8609175038441759607L;
 
     /**