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  4. [SOLVED] Crash error when deleting a QList< QPair<QString, QString> >

[SOLVED] Crash error when deleting a QList< QPair<QString, QString> >

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  • M Offline
    M Offline
    maisoui
    wrote on last edited by
    #7

    Here is my debugger output:

    !http://s18.postimg.org/7pyw0reix/qt_bug_qlist.png(debugger output)!

    And stack trace after crash occurs:

    !http://s15.postimg.org/5u3a6oq2j/qt_bug_stack.png(stack trace)!

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #8

      Did you check that all the libraries you are using are compiled with the same wchart_t options ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • M Offline
        M Offline
        maisoui
        wrote on last edited by
        #9

        I checked multiple times and everything seems ok. My project isn't "young" and it's the first time I encounter this problem. I don't know which way to look...
        (I don't remember I have crash on Qt 4.8.0, but I need to confirm).

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #10

          Which version of Qt are you using now ? There has been a change in the wchart_t flag, in Qt 5 it's the opposite of what was used for Qt 4

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • M Offline
            M Offline
            maisoui
            wrote on last edited by
            #11

            I've found the problem by creating a new project and copying the parameters one by one.

            The code below crash if I use the Runtime Library option Multi-threaded DLL (/MD) in debug mode (Qt 4.8.5, Visual Studio 2010 with platform toolset v90, 64 bit).

            @int main(int argc, char *argv[])
            {
            QCoreApplication a(argc, argv);

            QUrl getTokenUrl(QString::fromLatin1("http://localhost?hello=world"));
            QList< QPair<QString, QString> > tokens = getTokenUrl.queryItems();
            tokens.clear();

            return a.exec();
            }@

            This option is needed by my target environment but I'll see if I can do without.

            Maybe you have a suggestion?

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            • M Offline
              M Offline
              maisoui
              wrote on last edited by
              #12

              It seems it will be impossible for me to change this project settings. So I think I need to rebuild my Qt libraries with the option QMAKE_CFLAGS_DEBUG = -Zi -MD in the qmake.conf (for win32-msvc2008).
              Thank you for your patience.
              Regards

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #13

                Aren't you using 2010 ?

                Which project settings can't you changed ?

                Interested in AI ? www.idiap.ch
                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                • M Offline
                  M Offline
                  maisoui
                  wrote on last edited by
                  #14

                  I'm using Visual Studio 2010 with platform toolset v90 (VS2008) and v100 (VS2010), because I target multiple environement.

                  I can't change the project settings Runtime Library, it must be set on Multi-threaded DLL (/MD) (in debug/release mode).

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #15

                    Did you succeeded ?

                    Interested in AI ? www.idiap.ch
                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • M Offline
                      M Offline
                      maisoui
                      wrote on last edited by
                      #16

                      Yes. I rebuild Qt for (v90 - v100 / 32 and 64 bit) with MD flag for Debug and everything is ok. I forgot I had a similar problem with QPrinterInfo::availablePrinters(), and it fix this issue too.

                      Thank you for your help.
                      Regards.

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