C++ Memory Leak Detection in VS2010

test.cpp

#ifdef _DEBUG
#include <ostream>
#define _CRTDBG_MAP_ALLOC
#include <crtdbg.h>
#define DEBUG_NEW new(_NORMAL_BLOCK, __FILE__, __LINE__)
#define new DEBUG_NEW
#endif

// ...

#ifdef _WIN32
	_CrtDumpMemoryLeaks();
#endif

// Update 10/18/2011. Better to use the following for multiple exit points:
// add this code in main
#ifdef _DEBUG
    _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
#endif

// Breaking on a certain allocation:
_CrtSetBreakAlloc(137); // Will break on the 137th alloc