(Case 1082102) 2018.3.0b1: ReflectionTypeLoadException in player when using reflection

Previously the code below would execute without exceptions in 2018.2. However, in 2018.3 beta, it throws the exception in standalone players. I'm not sure if this is a bug, as I'm unfamiliar with the minutiae of the changes to the backend.

Code (CSharp):

1.  
2. using System;
3. using System.Reflection;
4.  
5. using UnityEngine;
6.  
7. public class GetTypes : MonoBehaviour
8. {
9.   void Start()
10.   {
11.     try
12.     {
13.       foreach (Assembly a in AppDomain.CurrentDomain.GetAssemblies())
14.       {
15.         foreach (Type t in a.GetTypes())
16.         {
17.           Debug.LogFormat("Type: {0}", t.Name);
18.         }
19.       }
20.     }
21.     catch (ReflectionTypeLoadException e)
22.     {
23.       foreach (Type iType in e.Types)
24.       {
25.         Debug.LogErrorFormat("Error Type: {0}", iType.AssemblyQualifiedName);
26.       }
27.     }
28.   }
29. }
30.  

 

Could you share your Player.log with the logging of the exceptions being thrown?

 

I've attached two log files.

"output_log (caught).txt" is from the above code.
"output_log (uncaught).txt" is from the below code, without catching the exception.

Code (CSharp):

1. using System;
2. using System.Reflection;
3.  
4. using UnityEngine;
5.  
6. public class GetTypes : MonoBehaviour
7. {
8.   void Start()
9.   {
10.     foreach (Assembly a in AppDomain.CurrentDomain.GetAssemblies())
11.     {
12.       foreach (Type t in a.GetTypes())
13.       {
14.         Debug.LogFormat("Type: {0}", t.Name);
15.       }
16.     }
17.   }
18. }
19.  

 

It is unclear from the logs what the issue. Could you report a bug and attach a small repro project for this issue, so it can be investigated? Thanks.

 

I've done exactly that, and changed the title of the thread to the title of the bug report.

 

I've seen exactly the same issue when using Jetbrains rider. When starting up Unity, Rider will add a plugin to Unity which fails to load with the following error:

Code (CSharp):

1. Unloading broken assembly Assets/Plugins/Editor/JetBrains/JetBrains.Rider.Unity.Editor.Plugin.Repacked.dll, this assembly can cause crashes in the runtime
2.  

When trying to iterate over all assemblies and getting the types in these assemblies, it will also iterate over the JetBrains plugin. After excluding it and not calling GetTypes on this assembly, it worked. It would be interesting to know, whether you also have Rider installed.

 

This should only happen in the editor. The latest version of Rider EAP should have this issue fixed.

 

Updating Rider worked, thanks!