c++内存泄露检测

// 以下代码在vs2013上面测试
#include <stdlib.h>    
#include <crtdbg.h>    
// 在入口函数中包含 _CrtDumpMemoryLeaks();    
// 即可检测到内存泄露  
typedef void* HObjectDetect;
typedef struct tagOBJECTBBOX
{
    float x1;
    float y1;
    float x2;
    float y2;
    float sc;
}ObjectBBox, *HObjectBBox;
HObjectDetect object_detect_init()
{
    return new int;
}
void object_detect_clear(HObjectDetect hobjdetect)
{
    delete hobjdetect;
}
void object_detection(HObjectBBox* phobjbbox)
{
    HObjectBBox hobjbbox = new ObjectBBox[2];
    hobjbbox[0].x1 = 1;
    hobjbbox[1].x2 = 2;
    *phobjbbox = hobjbbox;
}
void object_detection_delete_objbbox(HObjectBBox hobjbbox)
{
    delete hobjbbox;
    hobjbbox = nullptr;
}
int _tmain(int argc, _TCHAR* argv[])
{
    HObjectDetect hobjdetect = object_detect_init();
    HObjectBBox hobjbbox = nullptr;
    object_detection(&hobjbbox);
    object_detection_delete_objbbox(hobjbbox);
    object_detect_clear(hobjdetect);
    _CrtDumpMemoryLeaks();return 0;
}

注释掉：//object_detect_clear(hobjdetect);

Detected memory leaks!
Dumping objects ->
{116} normal block at 0x005BC768, 4 bytes long.
 Data: <    > CD CD CD CD
Object dump complete.

注释掉：//object_detection_delete_objbbox(hobjbbox);

Detected memory leaks!
Dumping objects ->
{117} normal block at 0x005FC7A8, 40 bytes long.
 Data: <   ?            > 00 00 80 3F CD CD CD CD CD CD CD CD CD CD CD CD
Object dump complete.

如果重新定义new，可以输出具体位置

#ifdef _DEBUG 
#define new   new(_NORMAL_BLOCK, __FILE__, __LINE__) 
#endif

Detected memory leaks!
Dumping objects ->
c:userszlydocumentsvisual studio 2013projects estopencv estopencv estopencv.cpp(38) : {117} normal block at 0x0067C7A8, 40 bytes long.
 Data: <   ?            > 00 00 80 3F CD CD CD CD CD CD CD CD CD CD CD CD
Object dump complete.

参考文章

http://blog.csdn.net/windows_nt/article/details/8652191