src/java.base/share/classes/java/util/jar/JarVerifier.java

@@ -588,10 +588,11 @@
         private static final long serialVersionUID = -9047366145967768825L;
 
         URL vlocation;
         CodeSigner[] vsigners;
         java.security.cert.Certificate[] vcerts;
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         Object csdomain;
 
         VerifierCodeSource(Object csdomain, URL location, CodeSigner[] signers) {
             super(location, signers);
             this.csdomain = csdomain;