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Invalid parameter passed to C runtime function

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qtcreatorqstringlistruntime error
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  • L Lasith

    @mrjj You mean Hard disk or main memory?

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #5

    @Lasith

    Main memory.
    the new function can trow that error if you try to allocate and there is not enough free.

    http://en.cppreference.com/w/cpp/memory/new/bad_alloc

    L 1 Reply Last reply
    1
    • JonBJ JonB

      @Lasith
      Check your calls to "std::alloc", i.e. everywhere you allocate memory. If you do inadvertently do something which boils down to, say:

      size_t size = (size_t) -1;
      std::alloc(size);
      

      then you will have memory problems :)

      L Offline
      L Offline
      Lasith
      wrote on last edited by
      #6

      @JNBarchan I already have this issue :O

      1 Reply Last reply
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      • mrjjM mrjj

        @Lasith

        Main memory.
        the new function can trow that error if you try to allocate and there is not enough free.

        http://en.cppreference.com/w/cpp/memory/new/bad_alloc

        L Offline
        L Offline
        Lasith
        wrote on last edited by
        #7

        @mrjj so how can I increase the amount of memory?

        mrjjM 1 Reply Last reply
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        • L Lasith

          @mrjj so how can I increase the amount of memory?

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by mrjj
          #8

          @Lasith
          Add more memory to the pc.
          But how much does the target currently have ?
          Did you check the how much app uses etc?

          Or find out if you are leaking memory and hence it runs dry.
          You have to find out what causes it using the debugger.
          Step through the code to find out where or in what context the
          error comes.

          You have not shown any code so its not possible to guess at.

          L 1 Reply Last reply
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          • mrjjM mrjj

            @Lasith
            Add more memory to the pc.
            But how much does the target currently have ?
            Did you check the how much app uses etc?

            Or find out if you are leaking memory and hence it runs dry.
            You have to find out what causes it using the debugger.
            Step through the code to find out where or in what context the
            error comes.

            You have not shown any code so its not possible to guess at.

            L Offline
            L Offline
            Lasith
            wrote on last edited by
            #9

            @mrjj Thanx how can I check the current memory usage? Using the task manager?

            mrjjM 1 Reply Last reply
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            • L Lasith

              @mrjj Thanx how can I check the current memory usage? Using the task manager?

              mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by
              #10

              @Lasith
              Yes it can give a good hint. Start app and see how much it uses.

              there is also
              https://docs.microsoft.com/en-us/sysinternals/downloads/rammap

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              • mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #11

                Does error comes as soon as you start the app or
                does it take some time?

                L 1 Reply Last reply
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                • mrjjM mrjj

                  Does error comes as soon as you start the app or
                  does it take some time?

                  L Offline
                  L Offline
                  Lasith
                  wrote on last edited by Lasith
                  #12

                  @mrjj The error oocurs when I click a button which feeds a set of values to a QStringList through 2 for loops!

                  mrjjM JonBJ 2 Replies Last reply
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                  • L Lasith

                    @mrjj The error oocurs when I click a button which feeds a set of values to a QStringList through 2 for loops!

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #13

                    @Lasith
                    Ok, you might copy a lot around and run out of memory.
                    is it 32/64 bit app?
                    how much memory do you have?

                    L 1 Reply Last reply
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                    • mrjjM mrjj

                      @Lasith
                      Ok, you might copy a lot around and run out of memory.
                      is it 32/64 bit app?
                      how much memory do you have?

                      L Offline
                      L Offline
                      Lasith
                      wrote on last edited by
                      #14

                      @mrjj I can not check now :( Its in my office PC Now I am home I will notify you tomorrow! :)

                      mrjjM 1 Reply Last reply
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                      • L Lasith

                        @mrjj I can not check now :( Its in my office PC Now I am home I will notify you tomorrow! :)

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by
                        #15

                        @Lasith
                        Ok, if you copy lists, it might be the reason.
                        You should show the code.
                        Using all mem with strings, takes a lot of strings :)

                        1 Reply Last reply
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                        • L Lasith

                          @mrjj The error oocurs when I click a button which feeds a set of values to a QStringList through 2 for loops!

                          JonBJ Offline
                          JonBJ Offline
                          JonB
                          wrote on last edited by
                          #16

                          @Lasith said in Invalid parameter passed to C runtime function:

                          @mrjj The error oocurs when I click a button which feeds a set of values to a QStringList through 2 for loops!

                          And you're sure those 2 loops aren't actually unlimited? ;-) Better look at how many iterations they do :) You do have to do really quite a lot of iterations to run out of memory!

                          L 1 Reply Last reply
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                          • JonBJ JonB

                            @Lasith said in Invalid parameter passed to C runtime function:

                            @mrjj The error oocurs when I click a button which feeds a set of values to a QStringList through 2 for loops!

                            And you're sure those 2 loops aren't actually unlimited? ;-) Better look at how many iterations they do :) You do have to do really quite a lot of iterations to run out of memory!

                            L Offline
                            L Offline
                            Lasith
                            wrote on last edited by Lasith
                            #17

                            @JNBarchan No the upper limits of the conditions is finite! Any way I will check and see! Plus if its an infinite loop the error message is different as I remember!

                            JonBJ 1 Reply Last reply
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                            • L Lasith

                              @JNBarchan No the upper limits of the conditions is finite! Any way I will check and see! Plus if its an infinite loop the error message is different as I remember!

                              JonBJ Offline
                              JonBJ Offline
                              JonB
                              wrote on last edited by JonB
                              #18

                              @Lasith said in Invalid parameter passed to C runtime function:

                              @JNBarchan No the upper limits of the conditions is finite!

                              This is good to know. But there are finite numbers and then there are other finite numbers. Numbers like, say, 0x7FFFFFFF (2 billion?) as the limit in each loop (I'm understanding they are nested?) will cause a lot of iterations... ;-)

                              L 1 Reply Last reply
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                              • JonBJ JonB

                                @Lasith said in Invalid parameter passed to C runtime function:

                                @JNBarchan No the upper limits of the conditions is finite!

                                This is good to know. But there are finite numbers and then there are other finite numbers. Numbers like, say, 0x7FFFFFFF (2 billion?) as the limit in each loop (I'm understanding they are nested?) will cause a lot of iterations... ;-)

                                L Offline
                                L Offline
                                Lasith
                                wrote on last edited by
                                #19

                                @JNBarchan yeah they are nested for loops!

                                1 Reply Last reply
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