• Unhandled exception (Access violation) while creating object of class i

    From Prasad Bhadakwan@21:1/5 to All on Wed Jan 11 02:48:33 2017
    Hi All,

    I want to dynamically load the client dll in my C++ Windows application. So I am using ACE_DLL. I want to create the object of the class in client dll in my application .
    So I have written a wrapper class. One of its member function creates the object of ACE_DLL.
    Then using that object I am loading the client dll. Next I am calling the symbol function through ACE_DLL object and passing the mangled name of constructor of the class in client dll. Next I am calling the function pointer (_entry ) which contains
    address of the constructor but this time I am getting error as "Unhandled exception (Access violation)"

    Please let me know if my approach is correct. Below are the calling sequence in my application.

    ACE_DLL* _pDll;
    typedef Test* (*TestFP)();
    TestFP _entry;

    _pDll = new ACE_DLL();


    std::string sSymbol = "Test"; // mangled name of the Test class constructor in client dll

    _entry = (TestFP) _pDll->symbol(sSymbol.c_str());

    Test *obj = _entry(); // Unhandled exception at 0x00362b2f in Testdll.exe: 0xC0000005: Access violation writing location 0x00362b0c.


    Thank you,

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