Question

由于我的C ++中的一些（奇怪的）问题 - 项目我使用Visual Leak Detector（第一次），检查项目是否有内存泄漏。所以我得到了i.a.接下来的报道：

    WARNING: Visual Leak Detector detected memory leaks!
---------- Block 4 at 0x004D07B0: 200 bytes ----------
  Leak Hash: 0xD2D1B4A0, Count: 1, Total 200 bytes
  Call Stack (TID 8796):
    ucrtbase.dll!malloc()
    f:\dd\vctools\crt\vcstartup\src\heap\new_scalar.cpp (19): LASS.exe!operator new() + 0x8 bytes
    clr.dll!0x72D616E5()
  Data:
    28 75 14 03    00 00 00 00    01 00 00 00    00 00 00 00     (u...... ........
    9A 99 99 99    99 99 B9 3F    50 00 00 00    0A 00 00 00     .......? P.......
    00 00 00 00    F4 01 00 00    00 00 00 00    01 00 00 00     ........ ........
    7B 14 AE 47    E1 7A 74 3F    14 00 00 00    BA FF FF FF     {..G.zt? ........
    00 00 00 00    F4 01 00 00    00 00 00 00    01 00 00 00     ........ ........
    7B 14 AE 47    E1 7A 84 3F    00 00 00 00    64 00 00 00     {..G.z.? ....d...
    00 00 00 00    01 00 00 00    14 00 00 00    46 00 00 00     ........ ....F...
    00 00 00 00    64 00 00 00    00 00 00 00    F4 01 00 00     ....d... ........
    01 00 00 00    B8 E2 13 03    F0 AD 18 03    00 00 00 00     ........ ........
    C8 E2 13 03    C8 AB 18 03    00 00 00 00    78 E3 13 03     ........ ....x...
    B8 AC 18 03    00 00 00 00    68 E2 13 03    E8 AC 18 03     ........ h.......
    00 00 00 00    14 00 00 00    01 00 00 00    64 00 00 00     ........ ....d...
    01 00 00 00    00 00 00 00                                   ........ ........


---------- Block 20 at 0x004D0880: 200 bytes ----------
  Leak Hash: 0xD2D1B4A0, Count: 1, Total 200 bytes
  Call Stack (TID 8796):
    ucrtbase.dll!malloc()
    f:\dd\vctools\crt\vcstartup\src\heap\new_scalar.cpp (19): LASS.exe!operator new() + 0x8 bytes
    clr.dll!0x72D616E5()
  Data:
    78 74 14 03    00 00 00 00    01 00 00 00    00 00 00 00     xt...... ........
    9A 99 99 99    99 99 B9 3F    50 00 00 00    0A 00 00 00     .......? P.......
    00 00 00 00    F4 01 00 00    00 00 00 00    01 00 00 00     ........ ........
    7B 14 AE 47    E1 7A 74 3F    14 00 00 00    BA FF FF FF     {..G.zt? ........
    00 00 00 00    F4 01 00 00    00 00 00 00    01 00 00 00     ........ ........
    7B 14 AE 47    E1 7A 84 3F    00 00 00 00    64 00 00 00     {..G.z.? ....d...
    00 00 00 00    01 00 00 00    14 00 00 00    46 00 00 00     ........ ....F...
    00 00 00 00    64 00 00 00    00 00 00 00    F4 01 00 00     ....d... ........
    01 00 00 00    38 E2 13 03    00 F0 15 03    00 00 00 00     ....8... ........
    B8 E1 13 03    88 00 7F 05    00 00 00 00    08 E2 13 03     ........ ........
    20 FF 7E 05    00 00 00 00    E8 E1 13 03    80 FF 7E 05     ..~..... ......~.
    00 00 00 00    14 00 00 00    01 00 00 00    64 00 00 00     ........ ....d...
    01 00 00 00    00 00 00 00                                   ........ ........


---------- Block 31 at 0x0053E1B8: 72 bytes ----------
  Leak Hash: 0x3F88029B, Count: 1, Total 72 bytes
  Call Stack (TID 8796):
    ucrtbase.dll!malloc()
    f:\dd\vctools\crt\vcstartup\src\heap\new_scalar.cpp (19): LASS.exe!operator new() + 0x8 bytes
    clr.dll!0x72D616E5()
  Data:
    60 BC 55 00    40 3E 80 05    A0 3F 80 05    A0 3F 80 05     `.U.@>.. .?...?..
    60 BB 55 00    20 34 18 03    00 00 00 00    00 00 00 00     `.U..4.. ........
    00 00 00 00    20 00 00 00    2F 00 00 00    80 BC 55 00     ........ /.....U.
    00 2E 18 03    00 00 00 00    00 00 00 00    00 00 00 00     ........ ........
    20 00 00 00    2F 00 00 00                                   ..../... ........


---------- Block 33 at 0x0055BB60: 8 bytes ----------
  Leak Hash: 0xA49C5AA6, Count: 1, Total 8 bytes
  Call Stack (TID 8796):
    ucrtbase.dll!malloc()
    f:\dd\vctools\crt\vcstartup\src\heap\new_scalar.cpp (19): LASS.exe!operator new() + 0x8 bytes
    clr.dll!0x72D616E5()
  Data:
    C8 E1 53 00    00 00 00 00                               

   ..S..... ........

    //And many more...

不幸的是，我不明白，VLD想要说的是问题所在。双击“f：\ dd ...” - 它应该将我的courser设置为问题所在的行，不是吗？但它不是。

我现在的问题是：我如何解决问题的范围，换句话说“我如何阅读这些报告”？

另外：

我使用Visual Studio 2015
该项目是C ++ Windows窗体项目
我将vld.h包含在附加包含中，将lib-directory包含在项目的其他库中
在main()我使用#include <vld.h>和_CrtDumpMemoryLeaks();

编辑：

我的主要版本（简化版本，但提供类似报告）：

//some class-includes
#include <vld.h> 

using namespace System;
using namespace System::Windows::Forms;
using namespace std; 

#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>

[STAThread]
void Main()
{
    Application::EnableVisualStyles();
    Application::SetCompatibleTextRenderingDefault(false);


    Experiment* experiment = new Experiment();
    Experiment_List*  running_experiments = new Experiment_List(); 

    while(!experiment->end) {
        experiment= new Experiment();

        LASS::MainWindow form(experiment, running_experiments);
        form.ShowDialog();

        if(!experiment->end){
            running_experiments->register_experiment(experiment); 
        }
    }

    running_experimente->end_all(); 

    _CrtDumpMemoryLeaks();

    exit(0); 
}

Unfortunatley大约有40个课程，我不想发帖...

Answer 1

我不知道问题究竟在哪里。对我来说，以RELEASE模式运行程序是有帮助的，而不是DEBUG模式。

我想，我的问题是一起处理托管代码和非托管代码。我在托管代码中有非托管代码。它接缝就像CLR在调试模式下使用不同的新运算符一样。不符合c ++标准。

根据：Using push_back() for STL List in C++ causes Access Violation, Crash

如果malloc（）是一个C ++类，则不会为任何一个调用构造函数那个班级的领域

VS将进入类 new_scalar.cpp 中的构造函数。人们说这取决于视觉泄漏检测器（VLD）。您可以在包含中使用它们。

最后，尝试用

区分您的代码

#pragma managed

和

#pragma unmanaged

以 RELEASE 模式运行。

（VS15 C ++）有一个Visual Leak Detector报告，但是现在呢？

1 个答案: