SpanBenchmark.native-pointer.cs

IntPtr pdata = Marshal.AllocHGlobal(Data.Length * sizeof(int));
int* data = (int*)pdata;
try
{
    Marshal.Copy(Data, 0, pdata, Data.Length);

    for (int i = 0; i < Data.Length - (BUFFER_SIZE + 1); i += BUFFER_SIZE)
    {
        int* sub = data + i;
        if (sub[BUFFER_SIZE - 1] != i + BUFFER_SIZE - 1)
            throw new Exception();
    }
}
finally
{
    Marshal.FreeHGlobal(pdata);
}