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野指针理解
2022-06-12 14:42:00 【腿毛ger】
野指针就是指针指向的位置是不可知的(随机的、不正确的、没有明确限制的)
野指针成因
1. 指针未初始化

2指针越界访问

3 指针指向的空间释放

如何规避野指针
1. 指针初始化
2. 小心指针越界
3. 指针指向空间释放即使置NULL
4. 避免返回局部变量的地址
5. 指针使用之前检查有效性

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