using System;
using System.IO;
using System.Reflection;
using System.Runtime.ConstrainedExecution;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;
public class MainClass
{
public static void Main()
{
IntPtr ptr = Marshal.AllocHGlobal(1024);
if (ptr != IntPtr.Zero){
Marshal.FreeHGlobal(ptr);
ptr = IntPtr.Zero;
}
}
}