What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]

Answer 1

An observation, but DotPeek shows the decompiled string.Empty thus:

/// 

/// Represents the empty string. This field is read-only.
/// 
/// 1
[__DynamicallyInvokable]
public static readonly string Empty;

internal sealed class __DynamicallyInvokableAttribute : Attribute
{
  [TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]
  public __DynamicallyInvokableAttribute()
  {
  }
}

If I declare my own Empty the same way except without the attribute, I no longer get the MDA:

class A
{
    static readonly string Empty;

    static A() { }

    public A()
    {
        string.Format("{0}", Empty);
    }
}