C# Bug in Threading.Task.Parallel.For?

这个bug是在Parallel.For吗?

   public class DataPoint
        {
            public int Game { get; set; }
            public byte Card { get; set; }
            public byte Location { get; set; }
            public DataPoint(int g,byte c,byte Loc)
            {
                Game = g;
                Card = c;
                Location = Loc;
            }
            public override string ToString()
            {
                return String.Format("{0} {1} {2}",Game,Card,Location);
            }
        }

一定是Parallel中的bug。

private static System.Collections.Concurrent.ConcurrentBag<DataPoint> FillData()
    {
        var points = new System.Collections.Concurrent.ConcurrentBag<DataPoint>();
        long c = 32768;
        long z = 0;
        Parallel.For(z, c, (i) =>
        {
            points.Add(new DataPoint( rand.Next(1, 100001),
                                      (byte)rand.Next(1, 144),
                                      (byte)rand.Next(1, 40)));
            });
        return points;
    }

private static System.Collections.Concurrent.ConcurrentBag<DataPoint> FillData()
    {
        var points = new System.Collections.Concurrent.ConcurrentBag<DataPoint>();
        long c = 32769;
        long z = 0;
        Parallel.For(z, c, (i) =>
        {
            points.Add(new DataPoint( rand.Next(1, 100001),
                                      (byte)rand.Next(1, 144),
                                      (byte)rand.Next(1, 40)));
            });
        return points;
    }

不默认为{1,1,1}