JIT compilation requirement for System.Reflection.PropertyInfo.GetValue?

Questions & Answers
1

Calling System.Reflection.PropertyInfo.GetValue on an AOT compiled platform when the API compatibility level is set to .NET 2.0 gives me the following error:

Unhandled Exception: System.ExecutionEngineException: Attempting to JIT compile method ‘System.Reflection.MonoProperty:StaticGetterAdapterFrame (System.Reflection.MonoProperty/StaticGetter`1,object)’ while running with --aot-only.

at System.Reflection.MonoProperty.GetValue (System.Object obj, System.Object index) [0x00000] in :0

The error does not occur when the API compatibility level is set to .NET 2.0 Subset. Is this expected behaviour or a Unity bug?

Here is my code

void Start()
{
    System.Type type = System.Type.GetType("UnityEngine.iPhone, UnityEngine, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null");
    if (type != null)
    {
        System.Reflection.PropertyInfo property = type.GetProperty("generation");
        if (property != null)
        {
            string text = property.GetValue(null, null).ToString().ToLower();
            Debug.Log("text = " + text);
        }
        else
            Debug.Log("property = null");
    }
}

This was added to a new empty project in Unity 4.5.5 and deployed to a 1st generation iPad Mini running iOS 7.1.2.

2

If you switch Unity to use Mono Subset, this should bypass that error. I’m still trying to isolate specifically why GetValue works in this subset… as from where i can tell Subset is a reduction in namespaces only on Mono…