--- old/src/java.base/share/classes/com/sun/java/util/jar/pack/Instruction.java	2019-08-27 17:26:46.426324386 -0700
+++ new/src/java.base/share/classes/com/sun/java/util/jar/pack/Instruction.java	2019-08-27 17:26:46.250324386 -0700
@@ -679,6 +679,7 @@
         }
     }
     static class FormatException extends IOException {
+        @java.io.Serial
         private static final long serialVersionUID = 3175572275651367015L;
 
         FormatException(String message) {