Webplayer Inheritance Bug

I filed this bug report today. Just reposting here in case anyone else runs into it.

Webplayer throws an exception when a class inherits from a base class and defines a protected child class which inherits from a protected child of the base class and the constructor is called. This only affects Webplayer (editor and build).

Tested in 4.5.1f3

Error:
MethodAccessException: Error verifying InhertianceBug/Element_Broken/DataSet/Data:.ctor (): Method InhertianceBug/Element_Base_Broken/DataSet_Base/Data_Base:.ctor () is not accessible at 0x0001

Bug Case:
618671

Workaround:
Child classes must be declared internal or public instead of protected.

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. public class InhertianceBug : MonoBehaviour {
5.   protected Element_Broken element_broken_protected;
6.   protected Element_Works element_works_public;
7.   void Awake() {
8.   // Run in the editor in Webplayer mode.
9.   // Uncomment this to see the crash:
10.   // MethodAccessException: Error verifying InhertianceBug/Element_Broken/DataSet/Data:.ctor ():
11.   // Method InhertianceBug/Element_Base_Broken/DataSet_Base/Data_Base:.ctor () is not accessible at 0x0001
12.   element_broken_protected = new Element_Broken();
13.   // Comment the above and uncomment this line to see this version that doesn't crash in webplayer
14.   //element_works_public = new Element_Works();
15.   }
16.   #region Broken -- Uses protected on DataSet and DataSet_Base
17.   public abstract class Element_Base_Broken {
18.   protected DataSet_Base dataSet;
19.   public Element_Base_Broken() {}
20.   protected abstract class DataSet_Base {
21.   protected Data_Base data;
22.   public DataSet_Base() {
23.  
24.   }
25.   public abstract class Data_Base {
26.   public Data_Base() { }
27.   }
28.   }
29.   }
30.   public class Element_Broken : Element_Base_Broken {
31.   public Element_Broken() : base() {
32.   dataSet = new DataSet();
33.   }
34.   protected class DataSet : DataSet_Base {
35.   public DataSet(): base() {
36.   data = new Data();
37.   }
38.   public class Data : Data_Base {
39.   public Data() : base() { }
40.   }
41.   }
42.   }
43.   #endregion
44.   #region Works -- Uses public on DataSet and DataSet_Base
45.   public abstract class Element_Base_Works {
46.   protected DataSet_Base dataSet;
47.   public Element_Base_Works() { }
48.   public abstract class DataSet_Base {
49.   protected Data_Base data;
50.   public DataSet_Base() {
51.   }
52.   public abstract class Data_Base {
53.   public Data_Base() { }
54.   }
55.   }
56.   }
57.   public class Element_Works : Element_Base_Works {
58.   public Element_Works()
59.   : base() {
60.   dataSet = new DataSet();
61.   }
62.   public class DataSet : DataSet_Base {
63.   public DataSet()
64.   : base() {
65.   data = new Data();
66.   }
67.   public class Data : Data_Base {
68.   public Data() : base() { }
69.   }
70.   }
71.   }
72.   #endregion
73.  
74. }
75.  

 

I also ran into this today, only in web player. I have a relatively complicated hierarchy of my own classes, but all were declared public.

 

Did this error get fixed? I'm still getting it in 4.6.3f1 - webplayer

 

The case shows as Open so I guess not.