重写Global new/delete时使用MFC静态链接库会产生错误

最新推荐文章于 2022-10-04 01:30:00 发布

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在尝试重写global new/delete 操作符进行调试工作时，发现如果程序使用MFC并且采用“Use MFC in a static library”方式时，会产生链接错误，如下所示：

1>uafxcwd.lib(afxmem.obj) : error LNK2005: "void * __cdecl operator new(unsigned int)" (??2@YAPAXI@Z) already defined in MemoryAllocFunc.obj
1>uafxcwd.lib(afxmem.obj) : error LNK2005: "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) already defined in MemoryAllocFunc.obj
1>uafxcwd.lib(afxmem.obj) : error LNK2005: "void * __cdecl operator new[](unsigned int)" (??_U@YAPAXI@Z) already defined in MemoryAllocFunc.obj
1>uafxcwd.lib(afxmem.obj) : error LNK2005: "void __cdecl operator delete[](void *)" (??_V@YAXPAX@Z) already defined in MemoryAllocFunc.obj

将工程类型修改成“Use MFC in a Shared DLL”方式后，即可解决该错误，重写的全局new/delete操作可正常工作。

附代码：http://download.youkuaiyun.com/detail/tzxx/9726975