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  4. QtCreator crashed and now will not start due to segfault

QtCreator crashed and now will not start due to segfault

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  • T TMcSquared

    I just debugged it and got this: Exception thrown at 0x670E5DA7 (Qt5Core.dll) in qtcreator.exe: 0xC0000005: Access violation reading location 0x7E5B8721.

    aha_1980A Offline
    aha_1980A Offline
    aha_1980
    Lifetime Qt Champion
    wrote on last edited by
    #12

    @TMcSquared

    Is it possible that the wrong Qt DLLs are loaded? Have you changed the PATH environment variable, for example?

    Qt has to stay free or it will die.

    1 Reply Last reply
    0
    • T Offline
      T Offline
      TMcSquared
      wrote on last edited by TMcSquared
      #13

      Hmm I'll try adding it to the PATH xD

      EDIT: that didn't work

      aha_1980A JonBJ 2 Replies Last reply
      0
      • T TMcSquared

        Hmm I'll try adding it to the PATH xD

        EDIT: that didn't work

        aha_1980A Offline
        aha_1980A Offline
        aha_1980
        Lifetime Qt Champion
        wrote on last edited by
        #14

        @TMcSquared

        No, that's not what I meant! I meant, have you done before? Or have you installed some program that did?

        Qt has to stay free or it will die.

        1 Reply Last reply
        0
        • mranger90M Offline
          mranger90M Offline
          mranger90
          wrote on last edited by
          #15

          Take a look at qt.conf in the creator/bin directory. If it's corrupted then plugins wont load.

          1 Reply Last reply
          0
          • T Offline
            T Offline
            TMcSquared
            wrote on last edited by
            #16

            It's not corrupted because it's a clean install

            1 Reply Last reply
            0
            • mranger90M Offline
              mranger90M Offline
              mranger90
              wrote on last edited by
              #17

              The try wiping out the creator files under AppData\Roaming\Qtproject

              1 Reply Last reply
              0
              • T Offline
                T Offline
                TMcSquared
                wrote on last edited by
                #18

                already did that.

                mrjjM 1 Reply Last reply
                0
                • T TMcSquared

                  already did that.

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #19

                  @TMcSquared
                  Best guess is that it gets wrong QtDLLs maybe via
                  path.

                  1 Reply Last reply
                  1
                  • T Offline
                    T Offline
                    TMcSquared
                    wrote on last edited by
                    #20

                    My PATH variable has zero Qt paths in it. even after a clean install.

                    mrjjM 1 Reply Last reply
                    0
                    • T TMcSquared

                      My PATH variable has zero Qt paths in it. even after a clean install.

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #21

                      @TMcSquared
                      I have no idea then.
                      last test
                      can you start with
                      qtcreator -noload Welcome -noload QmlDesigner -noload QmlProfiler
                      from shell and see if still crash ?

                      T 1 Reply Last reply
                      2
                      • mrjjM mrjj

                        @TMcSquared
                        I have no idea then.
                        last test
                        can you start with
                        qtcreator -noload Welcome -noload QmlDesigner -noload QmlProfiler
                        from shell and see if still crash ?

                        T Offline
                        T Offline
                        TMcSquared
                        wrote on last edited by
                        #22

                        :O It opened with qtcreator -noload Welcome -noload QmlDesigner -noload QmlProfiler

                        1 Reply Last reply
                        1
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #23

                          Hi,

                          Then it sounds like a graphic driver issue then. Are you sure there wasn't any modification in that regard on your machine ?

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

                          1 Reply Last reply
                          3
                          • T TMcSquared

                            Hmm I'll try adding it to the PATH xD

                            EDIT: that didn't work

                            JonBJ Offline
                            JonBJ Offline
                            JonB
                            wrote on last edited by JonB
                            #24

                            @TMcSquared
                            You could check whether Windows Update snuck in and did anything since it last worked... :)

                            1 Reply Last reply
                            0
                            • T Offline
                              T Offline
                              TMcSquared
                              wrote on last edited by TMcSquared
                              #25

                              That's completely possible, thanks for your guy's help!
                              @SGaist I have no idea, it quit working while I was logged in.

                              1 Reply Last reply
                              1
                              • N Offline
                                N Offline
                                nwoki
                                wrote on last edited by
                                #26

                                Hi all. Sorry to revive this topic but this problem has occurred to me as well but on an application I wrote for a client. The application was running fine. Then it crashed (just like @TMcSquared ) and hasn't opened since.
                                My access violation is in the QtWidgets.dll module.

                                Any clues? (i don't have the welcome/QmlDesigner/etc modules to disable on load as does qtcreatorI)

                                mrjjM 1 Reply Last reply
                                0
                                • N nwoki

                                  Hi all. Sorry to revive this topic but this problem has occurred to me as well but on an application I wrote for a client. The application was running fine. Then it crashed (just like @TMcSquared ) and hasn't opened since.
                                  My access violation is in the QtWidgets.dll module.

                                  Any clues? (i don't have the welcome/QmlDesigner/etc modules to disable on load as does qtcreatorI)

                                  mrjjM Offline
                                  mrjjM Offline
                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #27

                                  @nwoki
                                  Hi
                                  Do you use QML?
                                  if yes, could be a driver issue.

                                  Do you have data files?
                                  if yes, it could be damaged data files crashing app on load.

                                  It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                                  Buts its nearly impossible to guess on without far more concrete information :)

                                  N 1 Reply Last reply
                                  0
                                  • mrjjM mrjj

                                    @nwoki
                                    Hi
                                    Do you use QML?
                                    if yes, could be a driver issue.

                                    Do you have data files?
                                    if yes, it could be damaged data files crashing app on load.

                                    It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                                    Buts its nearly impossible to guess on without far more concrete information :)

                                    N Offline
                                    N Offline
                                    nwoki
                                    wrote on last edited by
                                    #28

                                    @mrjj said in QtCreator crashed and now will not start due to segfault:

                                    @nwoki
                                    Hi
                                    Do you use QML?
                                    if yes, could be a driver issue.

                                    This is reproducable only on the client pc. Any way I can debug this?

                                    Do you have data files?
                                    if yes, it could be damaged data files crashing app on load.

                                    Cleaned and still no dice

                                    It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                                    No other Qt applications are installed

                                    Buts its nearly impossible to guess on without far more concrete information :)

                                    Any idea on how I can help gather more info for furthur debugging?

                                    mrjjM 1 Reply Last reply
                                    0
                                    • N nwoki

                                      @mrjj said in QtCreator crashed and now will not start due to segfault:

                                      @nwoki
                                      Hi
                                      Do you use QML?
                                      if yes, could be a driver issue.

                                      This is reproducable only on the client pc. Any way I can debug this?

                                      Do you have data files?
                                      if yes, it could be damaged data files crashing app on load.

                                      Cleaned and still no dice

                                      It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                                      No other Qt applications are installed

                                      Buts its nearly impossible to guess on without far more concrete information :)

                                      Any idea on how I can help gather more info for furthur debugging?

                                      mrjjM Offline
                                      mrjjM Offline
                                      mrjj
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #29

                                      Hi

                                      This is reproducible only on the client pc. Any way I can debug this?
                                      Not really. you can ask him to update drivers and also
                                      collect information about opengl version supported.
                                      I take it, the project does use QML?

                                      Any idea on how I can help gather more info for furthur debugging?

                                      Well, i would add some logging to the app.
                                      So you can see if dies before main.
                                      That will give a hint if its related to actual user code or a DLL issue.

                                      N 1 Reply Last reply
                                      0
                                      • mrjjM mrjj

                                        Hi

                                        This is reproducible only on the client pc. Any way I can debug this?
                                        Not really. you can ask him to update drivers and also
                                        collect information about opengl version supported.
                                        I take it, the project does use QML?

                                        Any idea on how I can help gather more info for furthur debugging?

                                        Well, i would add some logging to the app.
                                        So you can see if dies before main.
                                        That will give a hint if its related to actual user code or a DLL issue.

                                        N Offline
                                        N Offline
                                        nwoki
                                        wrote on last edited by
                                        #30

                                        @mrjj doesn't even start, so adding any logging is futile. Double click on app -> immediate crash. I can see the crash errors in the windows EventViewer

                                        mrjjM 1 Reply Last reply
                                        0
                                        • N nwoki

                                          @mrjj doesn't even start, so adding any logging is futile. Double click on app -> immediate crash. I can see the crash errors in the windows EventViewer

                                          mrjjM Offline
                                          mrjjM Offline
                                          mrjj
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #31

                                          @nwoki
                                          Hi
                                          and there is no code in main.cpp that could crash it ?
                                          that is 100% for sure ?

                                          Then it really sounds like DLL issue.

                                          Do you know what happens to client pc between app working and crashing ?
                                          Windows update or anything like that ?

                                          N 1 Reply Last reply
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