視覺泄漏檢測器檢測新的空白MFC項目上的泄漏

Question

我最近安裝了VLD，以在Visual Studio 2008中嘗試和調試C++ MDI MFC應用程序.VLD報告了內存泄漏，無論我做了什麼我都無法解決問題，所以我創建了一個全新的空白項目（MDi MFC），內存泄漏仍然顯示出來。我所做的唯一修改是在主文件Project.h中寫入#include <vld.h>。文檔說哪個文件並不重要，所以這裏是執行後的輸出（只需選擇File/Exit，然後別的什麼都不做）。

'Project.exe': Loaded 'C:\Users\MasterHD\Documents\Visual Studio 2008\Projects\Project\Debug\Project.exe', Symbols loaded. 
'Project.exe': Loaded 'C:\Windows\SysWOW64\ntdll.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\kernel32.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\KernelBase.dll' 
'Project.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc90.debugmfc_1fc8b3b9a1e18e3b_9.0.21022.8_none_9b54853441e399d5\mfc90ud.dll', Symbols loaded. 
'Project.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc90.debugcrt_1fc8b3b9a1e18e3b_9.0.21022.8_none_96748342450f6aa2\msvcr90d.dll', Symbols loaded. 
'Project.exe': Loaded 'C:\Windows\SysWOW64\user32.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\gdi32.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\lpk.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\usp10.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\msvcrt.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\advapi32.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\sechost.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\rpcrt4.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\sspicli.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\cryptbase.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\shlwapi.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\msimg32.dll' 
'Project.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2\comctl32.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\oleaut32.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\ole32.dll' 
'Project.exe': Loaded 'D:\Program Files (x86)\Visual Leak Detector\bin\Win32\vld_x86.dll' 
'Project.exe': Loaded 'D:\Program Files (x86)\Visual Leak Detector\bin\Win32\dbghelp.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\imm32.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\msctf.dll' 
'Project.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc90.mfcloc_1fc8b3b9a1e18e3b_9.0.30729.6161_none_49768ef57548175e\MFC90ENU.DLL', Binary was not built with debug information. 
Visual Leak Detector Version 2.4RC2 installed. 
'Project.exe': Loaded 'C:\Windows\SysWOW64\uxtheme.dll' 
'Project.exe': Loaded 'C:\Windows\SysWOW64\clbcatq.dll' 
WARNING: Visual Leak Detector detected memory leaks! 
---------- Block 981 at 0x005BF560: 48 bytes ---------- 
    Leak Hash: 0x32D8578B, Count: 1, Total 48 bytes 
    Call Stack (TID 9552): 
    f:\dd\vctools\crt_bld\self_x86\crt\src\dbgheap.c (159): MSVCR90D.dll!_malloc_dbg 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\afxmem.cpp (407): mfc90ud.dll!operator new + 0x16 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\afxmem.cpp (61): mfc90ud.dll!operator new + 0x13 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\tooltip.cpp (479): mfc90ud.dll!CWnd::FilterToolTipMessage + 0x11 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\tooltip.cpp (374): mfc90ud.dll!CWnd::_FilterToolTipMessage 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\wincore.cpp (1070): mfc90ud.dll!CWnd::PreTranslateMessage 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\barcore.cpp (372): mfc90ud.dll!CControlBar::PreTranslateMessage + 0xC bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\wincore.cpp (2946): mfc90ud.dll!CWnd::WalkPreTranslateTree + 0x14 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\thrdcore.cpp (233): mfc90ud.dll!AfxInternalPreTranslateMessage + 0x12 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\thrdcore.cpp (777): mfc90ud.dll!CWinThread::PreTranslateMessage + 0x9 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\thrdcore.cpp (252): mfc90ud.dll!AfxPreTranslateMessage + 0x11 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\thrdcore.cpp (178): mfc90ud.dll!AfxInternalPumpMessage + 0x18 bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\thrdcore.cpp (900): mfc90ud.dll!CWinThread::PumpMessage 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\thrdcore.cpp (629): mfc90ud.dll!CWinThread::Run + 0xD bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\appcore.cpp (865): mfc90ud.dll!CWinApp::Run 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\winmain.cpp (47): mfc90ud.dll!AfxWinMain + 0xD bytes 
    f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\appmodul.cpp (30): Project.exe!wWinMain 
    f:\dd\vctools\crt_bld\self_x86\crt\src\crtexe.c (574): Project.exe!__tmainCRTStartup + 0x35 bytes 
    f:\dd\vctools\crt_bld\self_x86\crt\src\crtexe.c (399): Project.exe!wWinMainCRTStartup 
    0x76D8338A (File and line number not available): kernel32.dll!BaseThreadInitThunk + 0x12 bytes 
    0x77719F72 (File and line number not available): ntdll.dll!RtlInitializeExceptionChain + 0x63 bytes 
    0x77719F45 (File and line number not available): ntdll.dll!RtlInitializeExceptionChain + 0x36 bytes 
    Data: 
    2C 00 00 00 00 00 00 00 F2 19 BA 00 00 E1 00 00  ,....... ........ 
    00 00 00 00 00 00 00 00 18 00 00 00 17 00 00 00  ........ ........ 
    00 00 00 00 FF FF FF FF 00 00 00 00 00 00 00 00  ........ ........ 


Visual Leak Detector detected 1 memory leak (1016 bytes). 
Largest number used: 14482 bytes. 
Total allocations: 1681878 bytes. 
Visual Leak Detector is now exiting. 
The program '[14684] Project.exe: Native' has exited with code 0 (0x0). 

任何人有任何見解或建議？我甚至無法確定是什麼導致內存泄漏，更不用說在我的實際項目中。

編輯：如果我關閉在右上角使用「X」，然後NO發生內存泄漏的應用程序，但是當我使用的文件/退出下拉菜單，它總是顯示1016字節泄露。

Answer 1

我對此很晚了，但我只是遇到了同樣的泄漏使用visual studio 2013和使用crtdbg泄漏檢測。看起來PreTranslateMessage在主窗口消息處理循環中調用FilterToolTipMessage。然後在下面的點處發生泄漏

if (pToolTip == NULL) 
{ 
    pToolTip = new CToolTipCtrl; 
    if (!pToolTip->Create(pOwner, TTS_ALWAYSTIP)) 
    ... 
} 

我看到它清理的唯一的一點是如果下面的創建調用失敗。如果它沒有失敗，那麼我看不到這個對象的任何其他清理。

代碼位於「Microsoft Visual Studio 12.0 \ VC \ atlmfc \ src \ mfc \ tooltip.cpp」中。在版本中我有它的行416