指针常用值判断

最新推荐文章于 2024-11-26 20:12:08 发布

转载最新推荐文章于 2024-11-26 20:12:08 发布 · 1.7k 阅读

本文解析了特定十六进制值在程序内存中所代表的意义，包括未初始化、已删除及已释放内存等状态标记。这些值有助于理解内存管理及调试过程中遇到的问题。

常见的值可做判断
0xcdcdcdcd - Created but not initialised
0xdddddddd - Deleted
0xfeeefeee - Freed memory set by NT's heap manager
0xcccccccc - Uninitialized locals in VC6 when you compile w/ /GZ

0xabababab - Memory following a block allocated by LocalAlloc(

Ox00000000一般是NULL,也就是0,空指针
Oxcccccccc我认为应该是野指针
0xcdcdcdcd - Created but not initialised
创建但没有初始化
0xdddddddd - Deleted
删除(较少见,我没有见过)
0xfeeefeee - Freed memory set by NT's heap manager
堆管理器释放的内存区域
0xcccccccc - Uninitialized locals in VC6 when you compile w/ /GZ
当编译时没有初始化的局部变量
0xabababab - Memory following a block allocated by LocalAlloc()
局部变量内存块.