src/java.base/share/classes/jdk/internal/reflect/ReflectionFactory.java

*** 362,371 ****
--- 362,381 ----
          } catch (NoSuchMethodException ex) {
              return null;
          }
      }
  
+     public final Constructor<?> newConstructorForSerialization(Class<?> cl,
+                                                                Constructor<?> constructorToCall)
+     {
+         if (constructorToCall.getDeclaringClass() == cl) {
+             constructorToCall.setAccessible(true);
+             return constructorToCall;
+         }
+         return generateConstructor(cl, constructorToCall);
+     }
+ 
      public final Constructor<?> newConstructorForSerialization(Class<?> cl) {
          Class<?> initCl = cl;
          while (Serializable.class.isAssignableFrom(initCl)) {
              if ((initCl = initCl.getSuperclass()) == null) {
                  return null;
*** 381,390 ****
--- 391,406 ----
                  return null;
              }
          } catch (NoSuchMethodException ex) {
              return null;
          }
+         return generateConstructor(cl, constructorToCall);
+     }
+ 
+     private final Constructor<?> generateConstructor(Class<?> cl,
+                                                      Constructor<?> constructorToCall) {
+ 
  
          ConstructorAccessor acc = new MethodAccessorGenerator().
              generateSerializationConstructor(cl,
                                               constructorToCall.getParameterTypes(),
                                               constructorToCall.getExceptionTypes(),