--- a/src/java.base/share/classes/java/util/Arrays.java	Wed Oct 09 09:57:41 2019 -0700
+++ b/src/java.base/share/classes/java/util/Arrays.java	Wed Oct 09 10:17:50 2019 -0700
@@ -4339,6 +4339,7 @@
     {
         @java.io.Serial
         private static final long serialVersionUID = -2764017481108945198L;
+        @SuppressWarnings("serial") // Conditionally serializable
         private final E[] a;
 
         ArrayList(E[] array) {