我有一个非常奇怪的内存泄漏问题。我使用 _CrtDumpMemoryLeaks 来检查泄漏。这是我的 WinMain 函数:
int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPTSTR lpCmdLine,
_In_ int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
////////////////// SET UP CHECKS FOR MEMORY LEAKS ////////////////////
_CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
//////////////////////////////////////////////////////////////////////
_CrtDumpMemoryLeaks(); // Reports leaks to stderr
return 0;
}
如您所见，我已经完全删除了其中的所有内容，只是为了检查我是否收到了某种误报。
在我关闭一个应用程序后，我在输出中得到了这堆内存泄漏:
Detected memory leaks!
Dumping objects ->
{1343} normal block at 0x06076780, 8 bytes long.
Data: < g > 20 67 07 06 00 00 00 00
{1342} normal block at 0x06076710, 52 bytes long.
Data: <@ @ @ > 40 16 07 06 40 16 07 06 40 16 07 06 01 00 CD CD
{1341} normal block at 0x060766B0, 32 bytes long.
Data: <C:/Windows/Fonts> 43 3A 2F 57 69 6E 64 6F 77 73 2F 46 6F 6E 74 73
{1339} normal block at 0x0607F438, 16 bytes long.
Data: < P > C0 17 0B 01 01 00 00 00 01 00 00 00 80 13 50 04
{1338} normal block at 0x04501380, 8 bytes long.
Data: < H > BC 0D 0B 01 48 18 07 06
{1295} normal block at 0x060716B0, 8 bytes long.
Data: < > B4 B3 0B 01 00 00 00 00
{1294} normal block at 0x06071640, 52 bytes long.
Data: < g g g > 10 67 07 06 10 67 07 06 10 67 07 06 01 01 CD CD
{1293} normal block at 0x0450DFB8, 8 bytes long.
Data: < ! P > E0 21 0B 01 98 05 50 04
{1292} normal block at 0x0450E110, 8 bytes long.
Data: < P > E8 05 50 04 00 00 00 00
// (There's like thousand more of those...)
Object dump complete.
我完全不知道它们是从哪里来的。
提前感谢您的回答。
最佳答案
检查输出窗口。您是否看到正在加载一堆 DLL？在您调用泄漏输出之前，它们中的任何一个都可能正在静态初始化未释放的数据结构。试试小费here通过将泄漏检查包含在特定的执行时间范围内来排除一些噪音。
Since the statically initialized Google Test singleton requires allocations on the heap, the Visual C++ memory leak detector will report memory leaks at the end of the program run. The easiest way to avoid this is to use the _CrtMemCheckpoint and _CrtMemDumpAllObjectsSince calls to not report any statically initialized heap objects. See MSDN for more details and additional heap check/debug routines.
关于c++ - 奇怪的 "Memory Leak Detection"错误 C++，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13382201/