Use Visual Leak Detector (VLD)

Visual c ++ has built-in memory leakage detection tools, but has limited functions. VLD is quite powerful. It can locate the file and row number, locate the location of Memory leakage very accurately, andFree and open-source!

You only need to put the header file and Lib file of VLD in the project file.

You can also set it once, so you don't have to reset it for the new project. This section only describes the setting method in Visual Studio 2003/2005. VC ++ 6.0 is similar:

1. Open tools-> options-> projects and solutions-> VC ++ directories;
2. Click the include files drop-down list and add the include folder in the VLD installation directory at the end;
3. Similarly, click the Lib drop-down list to add the VLD Lib;
4. Add

# Include "VLD. h"

The sequence does not matter, but it must not be before some pre-compiled files (such as stdafx. h ). I added it to the end of stdafx. h file.

5. Copy all the dllfiles in the dllfolder under the installation directory to the project debugdirectory and the location generated by debug .exe. Click debug-> start debugging for debugging.ProgramIn the output window, the files, row numbers, and content leaked by memory during the program running are displayed.

Sample detection result:

---------- Block 2715024 at 0x04d8a368: 512 bytes ---------- call Stack: D: \ kangzj \ Documents \ Visual Studio 2005 \ projects \ rsip. root \ readtiff \ segmentflag. CPP (56): csegmentflag: getflagfromarray D: \ kangzj \ Documents \ Visual Studio 2005 \ projects \ rsip. root \ readtiff \ wholeclassdlg. CPP (495): segmentthreadproc F: \ dd \ vctools \ vc7libs \ ship \ atlmfc \ SRC \ MFC \ thrdcore. CPP (109): _ afxthreadentry F: \ Dd \ vctools \ crt_bld \ self_x86 \ CRT \ SRC \ threadex. C (348): _ callthreadstartex F: \ dd \ vctools \ crt_bld \ self_x86 \ CRT \ SRC \ threadex. C (331): _ threadstartex 0x7c80b729 (file and line number not available): getmodulefilenamea data: 3C 3C 3C 3C 3C 3C 3C 3C 45 45 45 45 & lt; & lt; <eeeee EEE eeeeeeee> & gt; & gt; 3E 3E 3E 3E 3E 3E 3E 3E 3E 3E & Gt; & gt; & gt; 3E 3E 3E 38 38 38 38 2B 2B 2B 2B 12 12 12 & gt; 888 8 ++... 12 12 12 12 12 12 12 12 12 12 12 2B 2B 2B 2B ........... +++ 2B 2B 2B 2B 2B 2B 2B 2B 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 37 77777777 77777777 37 37 37 37 37 37 37 37 37 37 21 21 21 21 21 21 77777777 77 !!!!!! 29 29 29 29 3A 3A 3A 3A 3A 3A 3A 3A 3A 3A 3A 3A 3A )))):::::::::::: 3A 3A 3A 3A 3A 3A 44 44 44 44 44 44 44 ::::::: d dddddddd 41 41 41 44 44 44 44 44 44 44 44 41 41 41 aaaadddd ddddddddaa 41 41 41 41 41 3D 3D 3D 3D 3D 3D aaaaaa ==== ======== 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D ==================== 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D 3D ==================== 3D 3 D 3D 3D 3D 3D 29 29 29 29 29 35 35 35 35 ======= )))))) 5555 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 55555555 55555555 35 35 35 35 35 35 35 35 35 35 35 35 29 29 55555555 555555 )) 29 29 29 29 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 )))) 2222 22222222 32 32 32 32 32 32 32 32 32 32 43 32 32 32 22222222 222cc222 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 cccccccccccc 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 cccccccc 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f 3f ???????? ???????? 3f 3f 3f 3f 3f 3f 3f 1C 1C 1C 1C 46 46 46 46 ???????. .... FFFF 46 46 46 46 46 40 40 40 40 40 40 40 40 40 40 40 ffffff @ 40 40 40 40 40 40 40 46 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 @ f @ 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 @@@@ </eeeee>

more detailed instructions are provided for the installer.