PrimitiveVsStructStatics.cs

using System;
using System.Runtime.CompilerServices;

// See Pro .NET Memory page 328
// Primitive static fields are stored in the CLR's native heap along with the module, but user-defined structs are actually boxed and stored on the GC heap
public unsafe static class Program
{
    public static int X = 100;
    public static int Y = 101;
    public static (int, int) Z = (200, 300);

    public static void Main()
    {
        Console.WriteLine($"Address of X: {(IntPtr)Unsafe.AsPointer(ref X)}");
        Console.WriteLine($"Address of Y: {(IntPtr)Unsafe.AsPointer(ref Y)}");
        Console.WriteLine($"Address of Z: {(IntPtr)Unsafe.AsPointer(ref Z)}");
    }
}