System.Text.RegularExpressions.RegexRunner.DoubleTrack C# (CSharp) Method

        protected void DoubleTrack()
        {
            int[] newtrack;

            newtrack = new int[runtrack.Length * 2];

            Array.Copy(runtrack, 0, newtrack, runtrack.Length, runtrack.Length);
            runtrackpos += runtrack.Length;
            runtrack = newtrack;
        }