System.Runtime.InteropServices.MarshalTests.ReAllocHGlobal_DataCopied C# (CSharp) Method

        public static void ReAllocHGlobal_DataCopied()
        {
            const int Size = 3;
            IntPtr p1 = Marshal.AllocHGlobal((IntPtr)Size);
            IntPtr p2 = p1;
            try
            {
                WriteBytes(p1, Size);
                int add = 1;
                do
                {
                    p2 = Marshal.ReAllocHGlobal(p2, (IntPtr)(Size + add));
                    VerifyBytes(p2, Size);
                    add++;
                }
                while (p2 == p1); // stop once we've validated moved case
            }
            finally
            {
                Marshal.FreeHGlobal(p2);
            }
        }