Code causing GenerateMethodCodeFixProvider crash.

[TonyValenti]

Version Used:
I am doing this in:
Visual Studio 2015 Update 1

Steps to Reproduce:

1. Create a new console project.
2. Paste this code in:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CrashVS {
    class Program {
        static void Main(string[] args) {
        }
    }

    public class DateFinder {


    }

    public class DateTimeFormula {

    }

    public interface IContainsAdjustments {

    }


    public static class DateFinderExtensions {
        public static T Offset<T>(this T DateFinder) where T : DateTimeFormula, IContainsAdjustments, new() {
            //The following line is incorrect.  Positioning your cursor on the red 
            //squiggly line causes "GenerateMethodCodeFixProvider" encountered an error and has been disabled.
            return DateFinder.Before<T, T>();
        }
    }
}

1. There will be a red squiggly line under:

return DateFinder.Before<T, T>();

1. Put your cursor on that line.
2. VS will show the error attached error.

Expected Behavior:
No crash.

Actual Behavior:
Get a crash.

Here's a screenshot:

[Pilchie]

Repro can be simplified to:

public class C
{
}

public static class Ex
{
    public static T M1<T>(this T t) where T : C
    {
        //The following line is incorrect.  Positioning your cursor on the red 
        //squiggly line causes "GenerateMethodCodeFixProvider" encountered an error and has been disabled.
        return t.M<T, T>();
    }
}