这可能是误报内存泄漏报告吗？

Question

我正在测试我创建的 dll。它反过来使用其他几个 dll。当我启动测试应用程序并退出时，我的 Dll 测试程序应用程序报告内存泄漏，除了使用 LoadLibrary 加载 dll 之外没有执行任何操作。它没有在我的 dll 源代码中显示确切的文件。如果我不加载 dll，就没有泄漏。它是一个 MFC dll 并具有 App 类。我从 dll 的应用程序类中删除了所有内容，因此它什么也不做，但是当我加载它时仍然会收到内存泄漏报告。我创建了另一组虚拟 dll 和测试应用程序，但没有报告任何泄漏，因此它与我的原始 dll 相关，也许它与其他 dll 的链接？

我尝试过使用_crtBreakAlloc = {allocation_#}; 技术，但它也不会停止调试器。如果这个内存泄漏是真的，我会很迷茫。我从documentation 看到它可以报告误报。这可能只是因为我的 dll 链接到一堆其他 dll 就误报了吗？我想不出别的，因为我已经注释掉了 dll 中的所有功能。

这是内存泄漏错误

Detected memory leaks!
Dumping objects ->
{250} client block at 0x00567E40, subtype c0, 64 bytes long.
a CDynLinkLibrary object at $00567E40, 64 bytes long
a CDynLinkLibrary object at $00567E40, 64 bytes long
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {244} normal block at 0x00567C20, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {243} normal block at 0x00567BC8, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {242} normal block at 0x00567B58, 52 bytes long.
 Data: <   x            > E4 B8 07 78 11 00 00 00 11 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {241} normal block at 0x00566C08, 40 bytes long.
 Data: <   x            > E4 B8 07 78 0B 00 00 00 0B 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {240} normal block at 0x00566BA8, 32 bytes long.
 Data: <   x            > E4 B8 07 78 07 00 00 00 07 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {239} normal block at 0x00566B50, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {238} normal block at 0x00566AE0, 46 bytes long.
 Data: <   x            > E4 B8 07 78 0E 00 00 00 0E 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {237} normal block at 0x00566A70, 48 bytes long.
 Data: <   x            > E4 B8 07 78 0F 00 00 00 0F 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {235} normal block at 0x005676B0, 42 bytes long.
 Data: <   x            > E4 B8 07 78 0C 00 00 00 0C 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {234} normal block at 0x00567658, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {233} normal block at 0x00567600, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {232} normal block at 0x00567590, 50 bytes long.
 Data: <   x            > E4 B8 07 78 10 00 00 00 10 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {231} normal block at 0x00567538, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {230} normal block at 0x005674E0, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {229} normal block at 0x00567488, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {228} normal block at 0x00567430, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {227} normal block at 0x005673D8, 24 bytes long.
 Data: <   x            > E4 B8 07 78 03 00 00 00 03 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {226} normal block at 0x00567380, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {225} normal block at 0x00567328, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {224} normal block at 0x005672C0, 40 bytes long.
 Data: <   x            > E4 B8 07 78 0B 00 00 00 0B 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {223} normal block at 0x00567268, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {222} normal block at 0x00567200, 44 bytes long.
 Data: <   x            > E4 B8 07 78 0D 00 00 00 0D 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {221} normal block at 0x00567198, 38 bytes long.
 Data: <   x            > E4 B8 07 78 0A 00 00 00 0A 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {220} normal block at 0x00567140, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {219} normal block at 0x005670E8, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {218} normal block at 0x00567080, 38 bytes long.
 Data: <   x            > E4 B8 07 78 0A 00 00 00 0A 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {217} normal block at 0x00567028, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {216} normal block at 0x00566FD0, 24 bytes long.
 Data: <   x            > E4 B8 07 78 03 00 00 00 03 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {215} normal block at 0x00566F78, 24 bytes long.
 Data: <   x            > E4 B8 07 78 03 00 00 00 03 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {214} normal block at 0x00566F18, 36 bytes long.
 Data: <   x            > E4 B8 07 78 09 00 00 00 09 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {213} normal block at 0x00566EC0, 24 bytes long.
 Data: <   x            > E4 B8 07 78 03 00 00 00 03 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {212} normal block at 0x00566E68, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {211} normal block at 0x00566E10, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {210} normal block at 0x00566DB8, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {209} normal block at 0x00566D60, 24 bytes long.
 Data: <   x            > E4 B8 07 78 03 00 00 00 03 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {208} normal block at 0x00566D08, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {207} normal block at 0x00566CB0, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {206} normal block at 0x00561918, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {205} normal block at 0x005618C0, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {204} normal block at 0x00561868, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {202} normal block at 0x005669F8, 60 bytes long.
 Data: <   x            > E4 B8 07 78 15 00 00 00 15 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {201} normal block at 0x00566988, 46 bytes long.
 Data: <   x            > E4 B8 07 78 0E 00 00 00 0E 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {200} normal block at 0x00566920, 42 bytes long.
 Data: <   x            > E4 B8 07 78 0C 00 00 00 0C 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {199} normal block at 0x005668C8, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {198} normal block at 0x00566868, 32 bytes long.
 Data: <   x            > E4 B8 07 78 07 00 00 00 07 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {197} normal block at 0x00566800, 44 bytes long.
 Data: <   x            > E4 B8 07 78 0D 00 00 00 0D 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {196} normal block at 0x00566790, 50 bytes long.
 Data: <   x            > E4 B8 07 78 10 00 00 00 10 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {195} normal block at 0x00566718, 60 bytes long.
 Data: <   x            > E4 B8 07 78 15 00 00 00 15 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {194} normal block at 0x005666C0, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {193} normal block at 0x00566040, 48 bytes long.
 Data: <   x            > E4 B8 07 78 0F 00 00 00 0F 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {192} normal block at 0x00561C98, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {81} normal block at 0x00561BA0, 32 bytes long.
 Data: <   x            > E4 B8 07 78 07 00 00 00 07 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {80} normal block at 0x00561B48, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {79} normal block at 0x00561AE0, 44 bytes long.
 Data: <   x            > E4 B8 07 78 0D 00 00 00 0D 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {78} normal block at 0x00561A80, 34 bytes long.
 Data: <   x            > E4 B8 07 78 08 00 00 00 08 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {77} normal block at 0x00561A20, 30 bytes long.
 Data: <   x            > E4 B8 07 78 06 00 00 00 06 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {76} normal block at 0x005613D0, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {75} normal block at 0x005619A8, 56 bytes long.
 Data: <   x            > E4 B8 07 78 13 00 00 00 13 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {74} normal block at 0x00561378, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {72} normal block at 0x005617F8, 48 bytes long.
 Data: <   x            > E4 B8 07 78 0F 00 00 00 0F 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {71} normal block at 0x005617A0, 28 bytes long.
 Data: <   x            > E4 B8 07 78 05 00 00 00 05 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {70} normal block at 0x00561748, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {69} normal block at 0x005616D0, 54 bytes long.
 Data: <   x            > E4 B8 07 78 12 00 00 00 12 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {68} normal block at 0x00561670, 34 bytes long.
 Data: <   x            > E4 B8 07 78 08 00 00 00 08 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {67} normal block at 0x00561618, 22 bytes long.
 Data: <   x            > E4 B8 07 78 02 00 00 00 02 00 00 00 01 00 00 00 
f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\strcore.cpp(156) : {66} normal block at 0x005615B8, 36 bytes long.
 Data: <   x            > E4 B8 07 78 09 00 00 00 09 00 00 00 01 00 00 00 
Object dump complete.

还有其他方法可以仔细检查内存泄漏不存在吗？我也安装了 deleaker，但它是错误程序，它保存在 pdb 文件中并且没有释放它……这让我更加痛苦。

Answer 1

根据下面的 MSKB 文章，这可能是预期的：

Memory leaks are reported when you use multiple MFC DLLs

引用链接页面：

当 MFC DLL 的多个版本时报告这些内存泄漏 在同一进程中加载​​。由于 MFC 扩展 (AFXDLL) DLL 需要与调用应用程序完全相同的 MFC DLL，这个问题 只能在使用 MFC 常规 (USRDLL) DLL 或 ActiveX 时发生 使用 MFC 共享版本的控件 (OCX)。

最常见的情况是混合使用 ANSI (MFC4xd.DLL) 和 UNICODE (MFC4xxUd.DLL) 版本的 MFC 在同一进程中。这也可以 混合 MFC42d.DLL 和 MFC40d.DLL 时发生。

就解决“问题”而言：

这些内存泄漏通知是错误的，可以忽略。自从 MFC的副本都不知道其他副本，要停止并不容易 这些虚假泄漏不会被报告。