Visual Studio memory leak detection not working

Question

I am trying to use the C++ memory leak detection in Visual Studio 2008, but it does not work because I always get these two failures:

1. error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
2. error C2365: '_CrtSetDbgFlag' : redefinition; previous definition was 'function'

I had tried putting this at the top of certain code files:

#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );

I do not understand which source/header files this is supposed to go in however, as the documentation for how to use this seems poor. It is for a CPython extension with numerous CPP/H files. Should these four lines go at the top of each and every code file?

What am I doing wrong?

Answer 1

您不能在全局范围内调用函数，需要将函数调用放入main函数中。