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Is it possible to replace the memory allocator in the debug build of an MFC application?

I would like to use Electric Fence in an MFC application. I would like to track new / delete , and if I can track malloc / free , then the added bonus.

Unfortunately, MFC overrides new and delete - but uses macros (DEBUG_NEW) - so I cannot use the standard C ++ method to override them. (MFC defines them to have different signatures, with source files and line numbers as additional parameters).

Is there a way to get all new / delete to go through my allocator and stop MFC trying to capture these allocators?

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You can stop switching MFC new by overriding DEBUG_NEW at the end of stdafx.h

 #undef DEBUG_NEW #define DEBUG_NEW new
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Source: https://habr.com/ru/post/914683/

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