检测器：null指针对null的解引用(dereference)和冗余比较。

Detector: null pointer dereference and redundant comparisons to null.

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解释指针和引用的主要区别。

Explain the key differences between Pointers and references.

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每个对象都有一些附加字节，通用语言运行库用来管理对象，如对象的虚表指针和同步锁定引用。

Every object has some additional bytes that the common language runtime USES to manage the object, such as the object's virtual table pointer and a reference to a sync block.

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