程序包含一个空指针引用。
通过指针映射集和故障模型，可以自动检测空指针引用内存故障，提高了测试效率。
Through pointer mapping set and fault model, it can detect null pointer dereference faults automatically and increases the testing efficiency.
通过指针映射集和故障模型，可以自动检测内存释放异常、内存泄露和空指针引用等动态内存故障，提高了测试效率。
Through pointer mapping sets and fault model, it can detect bad deallocation, memory leak and null pointer dereference faults automatically and increase the testing efficiency.
new函数除了构建一个包括它的对象引用以外，基本上没什么作用。而且您可以看到，其它的函数在执行前必须先将那个空指针解开。
The new function basically does nothing besides building the object reference to contain that, and you can see that the other functions have to unpack the void pointer before getting down to business.
空指针态引用故障在使用指针的程序中是普遍存在的，采用动态测试方法进行测试难以准确定位故障源。
Null pointer dereference fault is ubiquitous in the program with pointers. It is difficult to locate fault sources adopting dynamic testing method.
如果一个指针指向一个不在图中的对象，那么此对象就是一个不可到达的对象，垃圾收集器就将短弱引用表相应的槽置空。
If a pointer pointing to an object not in the graph, then the object is not a reachable object, and then garbage collector sets the slot to null in the short weak reference table.
在某些计算机上，它可能取消引用空指针，结果是空的，允许继续执行。
On some computers, it is possible to dereference the null pointer and the result is null, permitting execution to continue.
如果一个指针指向一个不在图中的对象(注意此时图中已包含Finalize可到达的对象)，那么此对象就是一个不可到达的对象，垃圾收集器就将长弱引用表相应的槽置空。
If a pointer pointing to an object not in the graph, then the object is not a reachable object, and then garbage collector sets the slot to null in the long weak reference table.
如果一个指针指向一个不在图中的对象(注意此时图中已包含Finalize可到达的对象)，那么此对象就是一个不可到达的对象，垃圾收集器就将长弱引用表相应的槽置空。
If a pointer pointing to an object not in the graph, then the object is not a reachable object, and then garbage collector sets the slot to null in the long weak reference table.
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