Hi, I have investigated this defect. This problem happens on two methods [1][2] of java.lang.LinkedList class. Initialize a LinkedList and add element at the last position. Then adding this linkedList to itself will trigger a endless loop.
The root cause is that the implementation of the above addAll methods adds elements directly from linkList itself which will also change the added linkList. It should transfer the added collection into an array, then add elements from that array rather than directly from the linkList itself. [1] public boolean addAll(Collection<? extends E> c) [2] public boolean addAll(int index, Collection<? extends E> c)
