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c++jsonpoco-libraries

Exception thrown at 0x00007FF93E507A7A (ntdll.dll) .Access violation reading location 0xFFFFFFFFFFFFFFFF

I'm using POCO lib to working network. i use JSON data of POCO/JSON . my code:

User user(context.marshal_as<std::string>(tbUserName->Text),
        context.marshal_as<std::string>(tbFullName->Text),
        context.marshal_as<std::string>(tbDisplayName->Text),
        context.marshal_as<std::string>(tbEmail->Text),
        context.marshal_as<std::string>(tbPhoneNumber->Text),
        context.marshal_as<std::string>(tbNamSinh->Text),
        context.marshal_as<std::string>(tbPassword->Text),
        context.marshal_as<std::string>(tbConfirm->Text)
    );
    string jsonString = user.serialize();

I have an error Exception thrown at 0x00007FF93E507A7A (ntdll.dll) in Client_Winform.exe:

0xC0000005: Access violation reading location 0xFFFFFFFFFFFFFFFF.

If there is a handler for this exception, the program may be safely continued.

Solution

  • You are using a handle which got returned as INVALID_HANDLE from some function (INVALID_HANDLE is -1 or 0xFFFFFFFFFFFFFFFF). When you try to use it, it gets used as an address and you don't have permissions to access that address (error 5 is access violation).