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

*** 588,597 ****
--- 588,598 ----
          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;