8268250: Class.arrayType() for a 255-d array throws undocumented IllegalArgumentException

Reviewed-by: sundar, alanb

src/java.base/share/classes/java/lang/Class.java

@@ -4485,12 +4485,21 @@ public final class Class<T> implements java.io.Serializable,
      * Returns a {@code Class} for an array type whose component type
      * is described by this {@linkplain Class}.
      *
+     * @throws UnsupportedOperationException if this component type is {@linkplain
+     *         Void#TYPE void} or if the number of dimensions of the resulting array
+     *         type would exceed 255.
      * @return a {@code Class} describing the array type
+     * @jvms 4.3.2 Field Descriptors
+     * @jvms 4.4.1 The {@code CONSTANT_Class_info} Structure
      * @since 12
      */
     @Override
     public Class<?> arrayType() {
-        return Array.newInstance(this, 0).getClass();
+        try {
+            return Array.newInstance(this, 0).getClass();
+        } catch (IllegalArgumentException iae) {
+            throw new UnsupportedOperationException(iae);
+        }
     }
 
     /**