0xC0000005：访问冲突读取位置0xffffffffffffffff

Question

我有：

• 非托管C ++应用
• C ++ / CLI Wrapper
• C＃GUI

我看到这种崩溃只发生在Release而不是debug。当非托管C ++应用程序独立运行时，在调试或发布时都不会发生崩溃。

我只能说这段代码发生了崩溃：

            if ((std::find(vstrEEDRRMachines.begin(), vstrEEDRRMachines.end(), m_sFrame.strSourceAddress) != vstrEEDRRMachines.end()
                && std::find(vstrEEDRRMachines.begin(), vstrEEDRRMachines.end(), m_sFrame.strDestAddress) != vstrEEDRRMachines.end())
                || (std::find(vstrRRRHMachines.begin(), vstrRRRHMachines.end(), m_sFrame.strSourceAddress) != vstrRRRHMachines.end()
                && std::find(vstrRRRHMachines.begin(), vstrRRRHMachines.end(), m_sFrame.strDestAddress) != vstrRRRHMachines.end())) 
            {
                // Create appropriate buffer size for raw message (i.e. size of payload along with the extra padding
                // for decoding)
                m_sFrame.iMessageSize = m_sFrame.iPayloadLength;
                m_sFrame.iOriginalMessageSize = m_sFrame.iPayloadLength;
                m_sFrame.pszMessage = new unsigned char[m_sFrame.iPayloadLength + Constants::RSSL_DECODE_PADDING];
                m_sFrame.pszOriginalMessage = new unsigned char[m_sFrame.iPayloadLength + Constants::RSSL_DECODE_PADDING];
            }

虽然我看不到vstrEEDRRMachines和vstrRRRHMachines中的内容（因为我们正在发布），但我可以看到在原始的C ++ / CLI包装器中，向量中是否存在有效的字符串条目。

堆栈跟踪如下：

  

msvcr100.dll！0000000069abbdc0（）[下面的框架可能不正确   和/或缺失，没有为msvcr100.dll加载符号]
    DataVerifier.exe！的std :: _查找，性病::分配器

     

    

    
• __ ptr64，性病:: basic_string的，标准::分配器          

        

  （std :: basic_string，std :: allocator＆gt; * _First，std :: basic_string，std :: allocator＆gt; *       _Last，const std :: basic_string，std :: allocator＆gt; ＆安培;       _Val）第41行+ 0x4a字节C ++       DataVerifier.exe！DataVerifier :: CPCAPParser :: Parse（const char * szFileName，       的std ::矢量       ＆安培; vSFramesRWF1Messages，std :: vector，std :: allocator       ，性病::分配器，性病::分配器

               

          

          
  • vstrEEDRRMachines，std :: vector，std :: allocator         ，性病::分配器，性病::分配器
          
  • vstrRRRHMachines，RsslDataDictionary＆amp; rsslDataDictionary）第178行+ 0x19字节C ++ [外部代码]
            DataVerifierLib.dll！DataVerifierLib :: PCAPParserWrapper :: ParseWrapper（系统::字符串^         strInputFileNames）第136行+ 0xf6字节C ++         DataVerifierGUI.exe！DataVerifierGUI.Form1.button1_Click（对象         sender，System.EventArgs e）第42行+ 0x30字节C＃         user32.dll！00007fff7a8c250d（）user32.dll！00007fff7a8c2367（）
            System.Windows.Forms.ni.dll！00007fff535368c0（）
          

        

      

    

  

崩溃特别发生在代码的这一部分的c：\ Program Files（x86）\ Microsoft Visual Studio 10.0 \ VC \ include \ algorithm中：

        // TEMPLATE FUNCTION find
template<class _InIt,
    class _Ty> inline
    _InIt _Find(_InIt _First, _InIt _Last, const _Ty& _Val)
    {   // find first matching _Val
    for (; _First != _Last; ++_First)
        if (*_First == _Val) <-- CRASH OCCURS HERE
            break;
    return (_First);
    }

我不知道发生了什么，因为使用C＃+ C ++ / CLI + C ++应用程序的发布模式正在发生崩溃。有什么方法可以轻松解决这个问题吗？

修改

这似乎发生了10次中的9次，但我注意到它确实有效的时间，当我检查Parse函数的参数时，就像它进入函数一样（没有执行任何行），所有3个向量具有正常值（第一个为0，第二个和第三个包含预期的IP地址）。然而，大多数时候，只要我们进入Parse功能，所有3个向量都具有负的大小和容量......当它们被使用时，一切都会变得繁荣。我将要通过Parse函数的入口以及之前的C ++ / CLI包装器。

bool CPCAPParser::Parse(const char* szFileName, std::vector<CRWFCapsule> &vSFramesRWF1Messages, std::vector<std::string> vstrEEDRRMachines, std::vector<std::string> vstrRRRHMachines, RsslDataDictionary &rsslDataDictionary) // change to a vector of rwf1capsules
{

这是C ++ / CLI包装器：

// This is the main DLL file.

#include "stdafx.h"

#include "DataVerifierLib.h"

// Constructor Implementation
DataVerifierLib::PCAPParserWrapper::PCAPParserWrapper()
{
}

std::vector<std::string> DataVerifierLib::PCAPParserWrapper::CreateNewMachineCollection(std::vector<std::string> vstrNewMachines, std::vector<std::string> vstrMachine1, std::vector<std::string> vstrMachine2)
{
    vstrNewMachines.reserve(vstrMachine1.size() + vstrMachine2.size()); // preallocate memory
    vstrNewMachines.insert(vstrNewMachines.end(), vstrMachine1.begin(), vstrMachine1.end());
    vstrNewMachines.insert(vstrNewMachines.end(), vstrMachine2.begin(), vstrMachine2.end());
    return vstrNewMachines;
}

bool DataVerifierLib::PCAPParserWrapper::ParseWrapper(String^ managedString)
{
    // String conversion from c# to c++
    String^ managedStringTmp = managedString;
    std::string strInputFileNames = msclr::interop::marshal_as<std::string>(managedStringTmp);

    std::vector<std::string> vRRMachines;
    std::vector<std::string> vRHMachines;
    std::vector<std::string> vEEDMachines;
    std::vector<std::string> vPorts; // decide on what checks are to be made. Should frame have matching src/dest ports? or just one of them.
    std::vector<std::string> vEEDRRMachines;
    std::vector<std::string> vRRRHMachines;
    std::vector<std::string> vstrLines;

    std::string strTxtFile = "ServerIPList.txt"; //argv[2]; // ServerIPList.txt
    std::string strLine;
    std::ifstream in(strTxtFile);

    if (!in)
    {
        std::cout << "There was a problem opening the file." << std::endl;
        std::cerr << "Error: " << strerror(errno) << std::endl;
        return -1;
    }

    while (std::getline(in, strLine))
    {
        vstrLines.push_back(strLine);
    }

    for (int i = 0; i < vstrLines.size(); ++i)
    {
        if (vstrLines[i].substr(0, 2) == "rr")
        {
            boost::split(vRRMachines, vstrLines[i], boost::is_any_of(","));
            if (vRRMachines.size() < 2)
                return -1;
            else
                vRRMachines.erase(vRRMachines.begin());
        }
        else if (vstrLines[i].substr(0, 2) == "rh")
        {
            boost::split(vRHMachines, vstrLines[i], boost::is_any_of(","));
            if (vRHMachines.size() < 2)
                return -1;
            else
                vRHMachines.erase(vRHMachines.begin());
        }
        else if (vstrLines[i].substr(0, 3) == "eed")
        {
            boost::split(vEEDMachines, vstrLines[i], boost::is_any_of(","));
            if (vEEDMachines.size() < 2)
                return -1;
            else
                vEEDMachines.erase(vEEDMachines.begin());
        }
        else if (vstrLines[i].substr(0, 5) == "ports")
        {
            boost::split(vPorts, vstrLines[i], boost::is_any_of(","));
            if (vPorts.size() < 2)
                return -1;
            else
                vPorts.erase(vPorts.begin());
        }
    }

    // Create a vector with EED/RR and RR/RH combined addresses
    vEEDRRMachines = CreateNewMachineCollection(vEEDRRMachines, vEEDMachines, vRRMachines);
    vRRRHMachines = CreateNewMachineCollection(vRRRHMachines, vRRMachines, vRHMachines);

    // Initialise Rssl
    RsslRet rsslRet;
    RsslError rsslError;
    rsslRet = rsslInitialize(RSSL_LOCK_NONE, &rsslError);

    if (rsslRet != RSSL_RET_SUCCESS)
        return -1;

    // Initialise Field Dictionary
    // To prevent memory issues, we need to use "malloc" for the data dictionary in order to load RWF.dat and enumtype.def
    RsslDataDictionary *rsslDataDictionary = (RsslDataDictionary*)malloc(sizeof(RsslDataDictionary));
    RsslBuffer rsslBufferError;
    rsslClearDataDictionary(rsslDataDictionary);
    if (rsslRet = rsslLoadFieldDictionary("RWF.DAT", rsslDataDictionary, &rsslBufferError) != RSSL_RET_SUCCESS)
    {
        // Ensure we free the data dictionary memory when finished
        free(rsslDataDictionary);
        //if (iDisplayType != DISPLAY)
        //  std::cout << "Could not load RDM Field Dictionary file." << std::endl;
        return -1;
    }

    // Load enum dictionary
    if (rsslLoadEnumTypeDictionary("enumtype.def", rsslDataDictionary, &rsslBufferError) != RSSL_RET_SUCCESS)
    {
        // Ensure we free the data dictionary memory when finished
        free(rsslDataDictionary);
        //if (iDisplayType != DISPLAY)
        //  std::cout << "Could not load Enum Type Dictionary file." << std::endl;
        return -1;
    }

    std::string strCombinedFileName;
    std::vector<CRWFCapsule> vRWFCapsules;
    std::vector<std::string> vstrInputFileNames;
    pPcapParser = new CPCAPParser(1,1); // Initiate C++ class instance
    boost::algorithm::split_regex(vstrInputFileNames, strInputFileNames, boost::regex(","));

    // Let's iterate through each PCAP file and parse it.
    for (int i = 0; i < vstrInputFileNames.size(); ++i)
    {
        if (false == strCombinedFileName.empty())
        {
            strCombinedFileName.append("-");
        }

        if (false == pPcapParser->Parse(vstrInputFileNames[i].c_str(), vRWFCapsules, vEEDRRMachines, vRRRHMachines, *rsslDataDictionary))
        {
            delete pPcapParser;
            // Ensure we free the data dictionary memory when finished
            free(rsslDataDictionary);
            vRWFCapsules.clear();
            return -1;
        }

        strCombinedFileName = strCombinedFileName.append(pPcapParser->GetFileName());
    }

    //if (iDisplayType != NO_DISPLAY)
    //  std::cout << "Clearing up..." << std::endl;
    delete pPcapParser;

    if (rsslRet = rsslDeleteDataDictionary(rsslDataDictionary) != RSSL_RET_SUCCESS)
    {
        // Ensure we free the data dictionary memory when finished
        free(rsslDataDictionary);
        //if (iDisplayType != NO_DISPLAY)
        //  std::cout << "Problem deleting dictionary." << std::endl;
        return -1;
    }

    // Ensure we free the data dictionary memory when finished
    free(rsslDataDictionary);

    if (vRWFCapsules.empty())
        return -1;

    CMessageSorter msgSorter(vEEDMachines, vRRMachines);
    std::map<std::string, SMessageInfo> m_msMessageInfo;
    std::map<std::string, SSystemInfo> m_msSystemInfo = msgSorter.SortMessages(vRWFCapsules, 1, m_msMessageInfo);
    if (m_msSystemInfo.empty())
        return -1;

    CDataVerifier dataVerifier(strCombinedFileName, 1, 1);
    dataVerifier.CreateOutputForAllMessages(m_msMessageInfo);
    dataVerifier.Process(m_msSystemInfo);

    // When clearing the vector, we have to make sure that the destructor of the RWF message is being called... so everything destroys itself correctly.
    // Will need to check if destruction is down properly. However, how can we delete RWF Capsules encapsulated in eachother?...

    vRWFCapsules.clear();
}

及其相应的头文件：

// DataVerifierLib.h

#pragma once
#include "../DataVerifier/CRWFCapsule.h"
#include "../DataVerifier/ISystem.h"
#include "../DataVerifier/CFrameAnalyser.h"
#include "../DataVerifier/CPCAPParser.h"
#include "../DataVerifier/CMessageSorter.h"
#include "../DataVerifier/CDataVerifier.h"
#include "../DataVerifier/CSourceDirectoryResponse.h"
#include "../DataVerifier/CDataVerifierConstants.h"
#include <vector>
#include <fstream>
#include <sstream>
#include <stdexcept>
#include <boost/algorithm/string.hpp>
#include <msclr/marshal_cppstd.h>

using namespace System;
using namespace DataVerifier;

namespace DataVerifierLib {

    public ref class PCAPParserWrapper
    {
        // TODO: Add your methods for this class here.
    public:
        // Constructor
        PCAPParserWrapper();

        // Wrapper Methods
        bool ParseWrapper(String^ strInputFileNames);

        // Fill vectors with appropriate RR/EED/RH addresses
        std::vector<std::string> CreateNewMachineCollection(std::vector<std::string> vstrNewMachines, std::vector<std::string> vstrMachine1, std::vector<std::string> vstrMachine2);

        // Public Variable
        double initVal;

    private:
        CPCAPParser *pPcapParser; // an instance of class in C++
    };
}

Answer 1

不知道为什么我已经收到了对此的投票，因为该解决方案对于混合使用C＃和C ++ / CLI包装器的人来说非常有用。

我意识到怀疑线实际上就是这条线：

//String^ managedStringTmp = managedString;
//std::string strInputFileNames = msclr::interop::marshal_as<std::string>(managedStringTmp);
std::string strInputFileNames = marshalString<E_UTF8>(managedString);

我显然已将其更改为使用这个新的“marshalString”函数。我在这里的链接中使用了一个marshal字符串模板类，因为它似乎解决了性能问题。

http://blog.nuclex-games.com/mono-dotnet/cxx-cli-string-marshaling/

现在我需要做的就是弄清楚为什么从包装器返回true并将其分配给C＃中的布尔值会返回false ...但希望这会帮助一些人。

<强>更新

这解释了为什么在包装器中将false或true返回给C＃将不起作用，并且我们需要使用函数的编组（不想这样做）或者返回0表示false，1表示true表示。

C# DllImport with C++ boolean function not returning correctly