Question

所以我在将Mingw编译的C ++ DLL添加到我的msvc项目时遇到了一些麻烦。我已经解决了一些人似乎有关于链接的问题，但现在当我在dll中调用函数时，我已经添加了一个“访问冲突读取位置0x00000014”错误，这会破坏new.cpp中的operator new方法（在visual studio 2010中）。我已经读到与内存管理有区别，我想知道这是否可能是我的麻烦的来源。

我正在尝试构建和运行的特定DLL是cvBlobs，可以在这里找到 - https://code.google.com/p/cvblob/，由于某些原因，我在使用mingw进行编译时不知道它的速度要快很多倍。

我对这些事情都很陌生，但我想知道是什么可能是haing dll是在调用msvc new（）方法吗？那有意义吗？我看过mingw网站上的帮助，但虽然这对我说到这一点很有用，但似乎没有帮助解决这个问题。如果您希望我提供任何其他内容，请与我们联系。

编辑：我已经从我的Visual Studio编译代码中包含了特定的有问题的代码，希望它可以提供一些清晰度。

    //Grey is a greyscale image, thresh is that image thresholded
    cvThreshold(grey,thresh,0,255,CV_THRESH_OTSU);
    IplImage* outputImg = cvCreateImage(cvGetSize(thresh), IPL_DEPTH_LABEL, 1);
    //Blobs is where the found blobs are outputted too
    cvb::CvBlobs blobs;
    unsigned int result;
    //This is the problematic method, it is in the mingw compiled dll,
    //other methods from this dll seem to work. I'm tempted to say that
    //the problem comes in the cvLabel method, where a varible "CvBlob blob" is
    //first initalized. This is due to the stack trace that I am including
    //under this edit
    result = cvb::cvLabel(thresh, outputImg, blobs);

这是我提到的堆栈跟踪更高

cvBlobs.dll!6e313f95()  
[Frames below may be incorrect and/or missing, no symbols loaded for cvBlobs.dll]   
cvBlobs.dll!6e30135b()  
msvcr100d.dll!operator new(unsigned int size)  Line 59C++
nuon.dll!std::_Allocate<std::_Tree_nod<std::_Tmap_traits<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> >,0> >::_Node>(unsigned int _Count, std::_Tree_nod<std::_Tmap_traits<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> >,0> >::_Node * __formal)  Line 36 + 0x15 bytes C++
nuon.dll!std::allocator<std::_Tree_nod<std::_Tmap_traits<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> >,0> >::_Node>::allocate(unsigned int _Count)  Line 187 + 0xb bytes C++
nuon.dll!std::_Tree_val<std::_Tmap_traits<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> >,0> >::_Tree_val<std::_Tmap_traits<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> >,0> >(const std::less<unsigned int> & _Parg, std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> > _Al)  Line 550 + 0xc bytes  C++
nuon.dll!std::_Tree<std::_Tmap_traits<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> >,0> >::_Tree<std::_Tmap_traits<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> >,0> >(const std::less<unsigned int> & _Parg, const std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> > & _Al)  Line 699  C++
nuon.dll!std::map<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> > >::map<unsigned int,cvb::CvBlob *,std::less<unsigned int>,std::allocator<std::pair<unsigned int const ,cvb::CvBlob *> > >()  Line 107    C++
nuon.dll!nuon::MarkerDetector::detect(cv::Mat & input, std::vector<nuon::Marker,std::allocator<nuon::Marker> > & detectedMarkers, nuon::CameraParameters camParams, float markerSizeMeters, bool setYPerperdicular)  Line 201   C++

我希望这个编辑可能有助于为某人澄清这个

从msvc调用mingw dll时访问冲突异常

0 个答案: