Get Memory Address of .NET Object (C#)

Question

I am trying to track down a bug in the mono runtime where a variable appears to be allocated to one valid object, and then is reassigned later to a bogus object, specificall

Answer 1

My alternatives... Also @ This similar question

#region AddressOf

    /// 

    /// Provides the current address of the given object.
    /// 
    /// 
    /// 
    [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
    public static System.IntPtr AddressOf(object obj)
    {
        if (obj == null) return System.IntPtr.Zero;

        System.TypedReference reference = __makeref(obj);

        System.TypedReference* pRef = &reference;

        return (System.IntPtr)pRef; //(&pRef)
    }

    /// 

    /// Provides the current address of the given element
    /// 
    /// 
    /// 
    /// 
    [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
    public static System.IntPtr AddressOf(T t)
        //refember ReferenceTypes are references to the CLRHeader
        //where TOriginal : struct
    {
        System.TypedReference reference = __makeref(t);

        return *(System.IntPtr*)(&reference);
    }

    [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
    static System.IntPtr AddressOfRef(ref T t)
    //refember ReferenceTypes are references to the CLRHeader
    //where TOriginal : struct
    {
        System.TypedReference reference = __makeref(t);

        System.TypedReference* pRef = &reference;

        return (System.IntPtr)pRef; //(&pRef)
    }

    /// 

    /// Returns the unmanaged address of the given array.
    /// 
    /// 
    ///  if null, otherwise the address of the array
    [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
    public static System.IntPtr AddressOfByteArray(byte[] array)
    {
        if (array == null) return System.IntPtr.Zero;

        fixed (byte* ptr = array)
            return (System.IntPtr)(ptr - 2 * sizeof(void*)); //Todo staticaly determine size of void?
    }

    #endregion