如何调试用C＃中使用的Native C ++编写的dll [英] How to debug into a dll written in Native C++ Used in C#

问题描述

我正在使用Native C ++编写程序作为dll，使用C ++ CLI作为包装器，使用C＃编写UI。当我在调试模式下构建它时，它工作正常，但在发布模式下它会抛出一个访问异常。更糟糕的是，当我从C＃代码调试它时，我无法调试到CLI代码，更不用说Native C ++ DLL代码了。但程序抛出的异常表明dll中存在错误，我无法调试它。任何帮助？



可能会产生如下异常：

在C＃中，我按下按钮A，然后在Native C ++ DLL中，有一个类A使用malloc来分配内存，而类B有一个256个字符的数组，而A类将动态分配内存来创建动态链接列表。第一次总是工作正常，按下按钮B后，删除A类和B类没有任何问题。当我再次按下按钮A时，A类和B类是使用new运算符创建的，没有任何问题，但是当我访问B类中的char数组时，程序抛出异常。如果我在A类中评论动态链接列表代码，则异常消失。所以我认为问题来自分配的内存。但是，我无法调试它。



任何帮助

解决方案

我从这里得到了方法。 http ：//stackoverflow.com/questions/57840/how-to-attach-debugger-to-step-into-native-c-code-from-a-managed-c-wrappe [ ^ ]

但我想修复异常，我正在尝试。

将Native C ++工作区作为启动项目。

在发布模式下，从项目 - >中禁用优化。属性 - >配置属性 - > C / C ++ - >优化。

设置断点并按 F5 。

当它要求时可执行文件，浏览到加载此DLL的EXE。

您好，



您应该使用WinDbg



快速启动使用WinDbg

i am writting a program using Native C++ as dll , C++ CLI as a wrapper and C# for the UI. When I build it in Debug mode, it works fine , but in Release mode it throws an Access Exception. what''s worse , when i debug it from C# code，i could not debug into the CLI code，much less the Native C++ DLL Code. But the exception throwed by the program showed that the error exists in the dll, i could not debug into it . Any help?

The exception may be produced like this:
In C# , i press button A, and then in Native C++ DLL , there is a class A uses malloc to allocate the memory and class B has an array of 256 chars and Class A will dynamic allocate the memory for creating a dynamic link list. The first time always works fine，after press button B，class A and Class B is deleted with out any problem. when i press Button A again.,The class A and Class B is created using new operator with out any problem, But when i access the char array in Class B, the program throws out the exception. If i commented dynamic link list code in class A , the exception gone. so i think the problem comes from the memory allocated . but , i could not debug into it.

Any help

解决方案

I got the method from here.http://stackoverflow.com/questions/57840/how-to-attach-debugger-to-step-into-native-c-code-from-a-managed-c-wrappe[^]
but i want to fix the exception , i am trying .

Make the Native C++ workspace as the startup project.
In Release mode, disable optimization from Project -> Properties -> Configuration Properties -> C/C++ -> Optimization.
Set the break point and press F5.
When it asks for the executable, browse to the EXE that loads this DLL.

Hi,

you should use WinDbg

Quick-start-to-using-WinDbg

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