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  4. Memory Leak in Qt 4.10.0

Memory Leak in Qt 4.10.0

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  • jsulmJ jsulm

    @ndiwan Do you have Valgrind? Check in Analyzer/Valgrind. You need to set the path to Valgrind executable.

    Christian EhrlicherC Offline
    Christian EhrlicherC Offline
    Christian Ehrlicher
    Lifetime Qt Champion
    wrote on last edited by
    #20

    @jsulm Since when does valgrind run on windows?

    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
    Visit the Qt Academy at https://academy.qt.io/catalog

    jsulmJ JonBJ 2 Replies Last reply
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    • Christian EhrlicherC Christian Ehrlicher

      @jsulm Since when does valgrind run on windows?

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #21

      @Christian-Ehrlicher Ah, Windows. Well, since never :-)

      https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • N Offline
        N Offline
        ndiwan
        wrote on last edited by ndiwan
        #22

        So How I can check memory leakage in Qt Creator running on Windows 10 ?

        Thanks

        JonBJ 1 Reply Last reply
        0
        • Christian EhrlicherC Christian Ehrlicher

          @jsulm Since when does valgrind run on windows?

          JonBJ Offline
          JonBJ Offline
          JonB
          wrote on last edited by JonB
          #23

          @Christian-Ehrlicher said in Memory Leak in Qt 4.10.0:

          Since when does valgrind run on windows?

          I am the person who originally replied to @ndiwan 's "Could you please help me with how I can detect memory leak." with "Use valgrind to detect memory leakages."

          I read the question carefully and nowhere did it mention using Windows. One of my pet bug-bears is if questioners cannot tell you what OS they are on for a question of this kind, why should I guess they are under Windows? Other OS people tell you what they are on, why do Windows users think people ought know they are on Windows...?

          Christian EhrlicherC 1 Reply Last reply
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          • N ndiwan

            So How I can check memory leakage in Qt Creator running on Windows 10 ?

            Thanks

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

            @ndiwan said in Memory Leak in Qt 4.10.0:

            So How I can check memory leakage in Qt Creator running on Windows 10 ?

            I would imagine it would depend on what compiler you have chosen to use, which we don't know....

            jsulmJ 1 Reply Last reply
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            • JonBJ JonB

              @ndiwan said in Memory Leak in Qt 4.10.0:

              So How I can check memory leakage in Qt Creator running on Windows 10 ?

              I would imagine it would depend on what compiler you have chosen to use, which we don't know....

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #25

              @JonB According to Kits it's MinGW

              https://forum.qt.io/topic/113070/qt-code-of-conduct

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              • JonBJ JonB

                @Christian-Ehrlicher said in Memory Leak in Qt 4.10.0:

                Since when does valgrind run on windows?

                I am the person who originally replied to @ndiwan 's "Could you please help me with how I can detect memory leak." with "Use valgrind to detect memory leakages."

                I read the question carefully and nowhere did it mention using Windows. One of my pet bug-bears is if questioners cannot tell you what OS they are on for a question of this kind, why should I guess they are under Windows? Other OS people tell you what they are on, why do Windows users think people ought know they are on Windows...?

                Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #26

                @JonB said in Memory Leak in Qt 4.10.0:

                why do Windows users think people ought know they are on Windows...?

                I don't know.
                And yes - my answer would also be - use valgrind or any other proper leak checker tool and how to you know that there is a memleak at all?

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                Visit the Qt Academy at https://academy.qt.io/catalog

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                • JoeCFDJ Offline
                  JoeCFDJ Offline
                  JoeCFD
                  wrote on last edited by JoeCFD
                  #27

                  On Windows, it may be a good idea to use Visual Studio + Qt plugin. Visual Studio is a powerful tool and has memory check functions for C++ code.
                  https://docs.microsoft.com/en-us/visualstudio/debugger/finding-memory-leaks-using-the-crt-library?view=vs-2019

                  Christian EhrlicherC 1 Reply Last reply
                  0
                  • JoeCFDJ Offline
                    JoeCFDJ Offline
                    JoeCFD
                    wrote on last edited by JoeCFD
                    #28

                    https://www.albertgao.xyz/2016/09/28/how-to-use-valgrind-on-windows/
                    I came across this, but never tried it by myself. Strongly recommend to use VS.

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                    • JoeCFDJ JoeCFD

                      On Windows, it may be a good idea to use Visual Studio + Qt plugin. Visual Studio is a powerful tool and has memory check functions for C++ code.
                      https://docs.microsoft.com/en-us/visualstudio/debugger/finding-memory-leaks-using-the-crt-library?view=vs-2019

                      Christian EhrlicherC Offline
                      Christian EhrlicherC Offline
                      Christian Ehrlicher
                      Lifetime Qt Champion
                      wrote on last edited by
                      #29

                      @JoeCFD said in Memory Leak in Qt 4.10.0:

                      Visual Studio is a powerful tool

                      powerful? Nice try...

                      Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                      Visit the Qt Academy at https://academy.qt.io/catalog

                      1 Reply Last reply
                      0
                      • N Offline
                        N Offline
                        ndiwan
                        wrote on last edited by
                        #30

                        Thanks , I will try VS.

                        Thanks

                        1 Reply Last reply
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