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Incompatible libpng version in application and library

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  • SGaistS SGaist

    Hi,

    Are you using any external library with your application that also makes use if libpng ?

    Tom assoT Offline
    Tom assoT Offline
    Tom asso
    wrote on last edited by
    #3

    @SGaist - hm, I am linking with numerous third-party .so libraries. What is the best way to determine their possible dependence on libpng? Thanks!

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    0
    • Christian EhrlicherC Offline
      Christian EhrlicherC Offline
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #4

      ldd is your friend

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

      Tom assoT 1 Reply Last reply
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      • Christian EhrlicherC Christian Ehrlicher

        ldd is your friend

        Tom assoT Offline
        Tom assoT Offline
        Tom asso
        wrote on last edited by
        #5

        @Christian-Ehrlicher - 'ldd myprog | grep libpng' does not show any result, so I assume that means myprog doesn't rely on libpng dynamic library. What else should I check? Thanks!

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #6

          You should check all the third party libraries you are using.

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          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

          Tom assoT 1 Reply Last reply
          1
          • SGaistS SGaist

            You should check all the third party libraries you are using.

            Tom assoT Offline
            Tom assoT Offline
            Tom asso
            wrote on last edited by
            #7

            @SGaist - Thanks - what tool should I use to check these libraries?

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

              The same tool: ldd

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              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

              Tom assoT 1 Reply Last reply
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              • SGaistS SGaist

                The same tool: ldd

                Tom assoT Offline
                Tom assoT Offline
                Tom asso
                wrote on last edited by
                #9

                @SGaist - Hm, checked all of them with ldd - none show 'libpng*' in the list

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

                  Any of these uses plugins ?

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

                  Tom assoT 1 Reply Last reply
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                  • SGaistS SGaist

                    Any of these uses plugins ?

                    Tom assoT Offline
                    Tom assoT Offline
                    Tom asso
                    wrote on last edited by Tom asso
                    #11

                    @SGaist - I do not think so, at least I didn't create any. To be sure I ran 'ldd -u -d -r ' on all *plugin.so files in my Qt5.13.0 directory, none of them show dependency on libpng.
                    Obviously something is invoking libpng routines, but I haven't found libpng dependency with ldd in any of my app's libraries....???

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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #12

                      Can you provide a full stack trace of your crash ?

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

                      Tom assoT 1 Reply Last reply
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                      • SGaistS SGaist

                        Can you provide a full stack trace of your crash ?

                        Tom assoT Offline
                        Tom assoT Offline
                        Tom asso
                        wrote on last edited by
                        #13

                        @SGaist - yes, gdb stacktrace is below - thank you!

                        Thread 1 "mbgrdviz" received signal SIGSEGV, Segmentation fault.
                        __longjmp_chk (env=0x0, val=1) at ../setjmp/longjmp.c:32
                        32	../setjmp/longjmp.c: No such file or directory.
                        (gdb) bt
                        #0  0x00007ffff4e43b00 in __longjmp_chk (env=0x0, val=1)
                            at ../setjmp/longjmp.c:32
                        #1  0x00007fffb423bc9c in  ()
                            at /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so
                        #2  0x00007ffff08492c7 in png_error (png_ptr=0x555557fde4f0, error_message=error_message@entry=0x7ffff0dd9cb8 "Incompatible libpng version in application and library") at libpng/pngerror.c:80
                        #3  0x00007ffff084c685 in png_create_read_struct_2 (user_png_ver=0x7fffb423ce57 "1.6.34", error_ptr=0x555557faf050, error_fn=0x7fffb423bc50, warn_fn=0x7fffb423cd10, mem_ptr=0x0, malloc_fn=0x7fffb423c320, free_fn=0x7fffb423afc0)
                            at libpng/pngread.c:150
                        #4  0x00007fffb423befb in  ()
                            at /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so
                        #5  0x00007fffe07a408c in  ()
                            at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                        #6  0x00007fffe07a4955 in gdk_pixbuf_loader_close ()
                            at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                        #7  0x00007fffe07a120b in  ()
                            at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                        #8  0x00007fffe07a223c in gdk_pixbuf_new_from_stream ()
                            at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                        #9  0x00007fffe15ff142 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #10 0x00007fffe15ff2bb in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #11 0x00007fffe15ffb46 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #12 0x00007fffe15f74b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #13 0x00007fffe172db3a in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #14 0x00007fffe15f5faa in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #15 0x00007fffe15aebf1 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #16 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #17 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #18 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #19 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #20 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #21 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #22 0x00007fffe159fcf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #23 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #24 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #25 0x00007fffe15a2601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #26 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #27 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #28 0x00007fffe175b1c0 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #29 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #30 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #31 0x00007fffe175ad35 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #32 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #33 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #34 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #35 0x00007fffe159fcf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #36 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #37 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #38 0x00007fffe15a2601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #39 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #40 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #41 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #42 0x00007fffe172ffd7 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #43 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #44 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #45 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #46 0x00007fffe159fcf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #47 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #48 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #49 0x00007fffe15a2601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #50 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #51 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #52 0x00007fffe16ed820 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #53 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #54 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #55 0x00007fffe16ed6c1 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #56 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #57 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #58 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #59 0x00007fffe159fcf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #60 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #61 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #62 0x00007fffe15a2601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #63 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #64 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #65 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #66 0x00007fffe159fcf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #67 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #68 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #69 0x00007fffe15a2601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #70 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #71 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #72 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #73 0x00007fffe159fcf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #74 0x00007fffe15f140d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #75 0x00007fffe15f6063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #76 0x00007fffe15a2601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #77 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #78 0x00007fffe15ec3ca in gtk_container_propagate_draw ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #79 0x00007fffe15ec4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #80 0x00007fffe18136ef in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #81 0x00007fffe18058db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #82 0x00007fffe180e998 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #83 0x00007fffe16b2859 in gtk_main_do_event ()
                            at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                        #84 0x00007fffe11c3765 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                        #85 0x00007fffe11d37f5 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                        #86 0x00007fffe11d49f6 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                        #87 0x00007fffe11d4bf0 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                        #88 0x00007fffdbdbc10d in g_closure_invoke ()
                            at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                        #89 0x00007fffdbdcf05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                        #90 0x00007fffdbdd7715 in g_signal_emit_valist ()
                            at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                        #91 0x00007fffdbdd812f in g_signal_emit ()
                            at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                        #92 0x00007fffe11ccac9 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                        #93 0x00007fffe11b8080 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                        #94 0x00007fffeca4ed03 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                        #95 0x00007fffeca4e285 in g_main_context_dispatch ()
                            at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                        #96 0x00007fffeca4e650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                        #97 0x00007fffeca4e6dc in g_main_context_iteration ()
                            at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                        #98 0x00007ffff5d7118f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x5555559fc4b0, flags=...)
                            at kernel/qeventdispatcher_glib.cpp:423
                        #99 0x00007ffff5d17902 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffffffda70, flags=..., flags@entry=...)
                            at kernel/qeventloop.cpp:225
                        #100 0x00007ffff5d20260 in QCoreApplication::exec() ()
                            at kernel/qcoreapplication.cpp:1373
                        #101 0x000055555555a767 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at main.cpp:66
                        
                        
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                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #14

                          Can you start your application with the QT_DEBUG_PLUGINS environment variable set 1 ?

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

                          Tom assoT 1 Reply Last reply
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                          • SGaistS SGaist

                            Can you start your application with the QT_DEBUG_PLUGINS environment variable set 1 ?

                            Tom assoT Offline
                            Tom assoT Offline
                            Tom asso
                            wrote on last edited by
                            #15

                            @SGaist - Thank you. I do that and output shows multiple image libraries being loaded:

                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqgif.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqicns.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqico.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqjpeg.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqsvg.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqtga.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqtiff.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqwbmp.so"
                            loaded library "/home/oreilly/Qt/5.13.0/gcc_64/plugins/imageformats/libqwebp.so"
                            

                            However these do not include libpng.so - probably because before building Qt I configured it to use my system's libpng; "./configure -system-libpng", while is libpng16. What else might the problem be?

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                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #16

                              What QPA and theme plugins gets loaded ?

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

                              Tom assoT 1 Reply Last reply
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                              • SGaistS SGaist

                                What QPA and theme plugins gets loaded ?

                                Tom assoT Offline
                                Tom assoT Offline
                                Tom asso
                                wrote on last edited by Tom asso
                                #17

                                @SGaist - Thanks very much for your help!
                                I discovered which library is causing the problem. It's a non-Qt library that doesn't directly rely on libpng, but it does rely on 50+ other libraries - apparently one of those does directly or indirectly rely on libpng. Apparently ldd doesn't show recursive dependencies, which surprises me. https://stackoverflow.com/questions/15064685/does-ldd-also-show-dependencies-of-dependencies/15064784#15064784

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #18

                                  What library was it ?

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                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                  • SGaistS SGaist

                                    What library was it ?

                                    Tom assoT Offline
                                    Tom assoT Offline
                                    Tom asso
                                    wrote on last edited by
                                    #19

                                    @SGaist - the segfault occurs when I link with /usr/local/lib/libgmt.so.6.0.0, for the Generic Mapping Tools. I built the library from source and installed on this system. Yet when I run 'ldd /usr/local/lib/libgmt.so.6.0.0' it does not display any dependency on libpng - I don't understand why...

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                                    • SGaistS SGaist

                                      What library was it ?

                                      Tom assoT Offline
                                      Tom assoT Offline
                                      Tom asso
                                      wrote on last edited by
                                      #20

                                      @SGaist - also tried installing libgmt-dev (rather than building myself) - I get the same segfault due to "Incompatible libpng version in application and library"

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                                      • SGaistS Offline
                                        SGaistS Offline
                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #21

                                        What is surprising is that you build everything with system dependencies and yet you have two different png libraries.

                                        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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                                        • SGaistS SGaist

                                          What is surprising is that you build everything with system dependencies and yet you have two different png libraries.

                                          Tom assoT Offline
                                          Tom assoT Offline
                                          Tom asso
                                          wrote on last edited by
                                          #22

                                          @SGaist - Yes. My app is built by qtcreator as a QtQuick project. The same segfault occurs whether i build the app with distribution-provided Qt (5.9) or with offline-installer-provided Qt 5.14 (Yes, I finally figured out how to switch between those, haha). My app includes QML with a C++ singleton backend. It is the C++ backend that requires libgmt. The fault occurs when the QML attempts to open a FileDialog. If I remove the libgmt stuff from the backend, the FileDialog opens fine. Yet the backtrace doesn't show anything to do with "gmt" - how can this be? From the gdb backtrace it seems the fault happens somewhere in libgtk-3.so.0.

                                          
                                          Thread 1 "TEST4" received signal SIGSEGV, Segmentation fault.
                                          __longjmp_chk (env=0x0, val=1) at ../setjmp/longjmp.c:32
                                          32	../setjmp/longjmp.c: No such file or directory.
                                          (gdb) bt
                                          #0  0x00007ffff54f7b00 in __longjmp_chk (env=0x0, val=1)
                                              at ../setjmp/longjmp.c:32
                                          #1  0x00007fff9b5fbc9c in  ()
                                              at /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so
                                          #2  0x00007ffff3ba02c7 in png_error (png_ptr=0x55555784b650, error_message=error_message@entry=0x7ffff4130cb8 "Incompatible libpng version in application and library") at libpng/pngerror.c:80
                                          #3  0x00007ffff3ba3685 in png_create_read_struct_2 (user_png_ver=0x7fff9b5fce57 "1.6.34", error_ptr=0x555557801860, error_fn=0x7fff9b5fbc50, warn_fn=0x7fff9b5fcd10, mem_ptr=0x0, malloc_fn=0x7fff9b5fc320, free_fn=0x7fff9b5fafc0)
                                              at libpng/pngread.c:150
                                          #4  0x00007fff9b5fbefb in  ()
                                              at /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so
                                          #5  0x00007fffda7c508c in  ()
                                              at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                                          #6  0x00007fffda7c5955 in gdk_pixbuf_loader_close ()
                                              at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                                          #7  0x00007fffda7c220b in  ()
                                              at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                                          #8  0x00007fffda7c323c in gdk_pixbuf_new_from_stream ()
                                              at /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0
                                          #9  0x00007fffdb620142 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #10 0x00007fffdb6202bb in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #11 0x00007fffdb620b46 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #12 0x00007fffdb6184b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #13 0x00007fffdb74eb3a in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #14 0x00007fffdb616faa in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #15 0x00007fffdb5cfbf1 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #16 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #17 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #18 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #19 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #20 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #21 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #22 0x00007fffdb5c0cf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          ---Type <return> to continue, or q <return> to quit---
                                          #23 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #24 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #25 0x00007fffdb5c3601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #26 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #27 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #28 0x00007fffdb77c1c0 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #29 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #30 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #31 0x00007fffdb77bd35 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #32 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #33 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #34 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #35 0x00007fffdb5c0cf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #36 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #37 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #38 0x00007fffdb5c3601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #39 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #40 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #41 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #42 0x00007fffdb750fd7 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #43 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #44 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #45 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #46 0x00007fffdb5c0cf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #47 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #48 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #49 0x00007fffdb5c3601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #50 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #51 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #52 0x00007fffdb70e820 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #53 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #54 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #55 0x00007fffdb70e6c1 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #56 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          ---Type <return> to continue, or q <return> to quit---
                                          #57 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #58 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #59 0x00007fffdb5c0cf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #60 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #61 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #62 0x00007fffdb5c3601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #63 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #64 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #65 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #66 0x00007fffdb5c0cf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #67 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #68 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #69 0x00007fffdb5c3601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #70 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #71 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #72 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #73 0x00007fffdb5c0cf4 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #74 0x00007fffdb61240d in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #75 0x00007fffdb617063 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #76 0x00007fffdb5c3601 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #77 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #78 0x00007fffdb60d3ca in gtk_container_propagate_draw ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #79 0x00007fffdb60d4b2 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #80 0x00007fffdb8346ef in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #81 0x00007fffdb8268db in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #82 0x00007fffdb82f998 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #83 0x00007fffdb6d3859 in gtk_main_do_event ()
                                              at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
                                          #84 0x00007fffdb1e4765 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                                          #85 0x00007fffdb1f47f5 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                                          #86 0x00007fffdb1f59f6 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                                          #87 0x00007fffdb1f5bf0 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                                          #88 0x00007fffd9e0010d in g_closure_invoke ()
                                              at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                                          #89 0x00007fffd9e1305e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                                          ---Type <return> to continue, or q <return> to quit---
                                          #90 0x00007fffd9e1b715 in g_signal_emit_valist ()
                                              at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                                          #91 0x00007fffd9e1c12f in g_signal_emit ()
                                              at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
                                          #92 0x00007fffdb1edac9 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                                          #93 0x00007fffdb1d9080 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
                                          #94 0x00007fffeef14d03 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                                          #95 0x00007fffeef14285 in g_main_context_dispatch ()
                                              at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                                          #96 0x00007fffeef14650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                                          #97 0x00007fffeef146dc in g_main_context_iteration ()
                                              at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
                                          #98 0x00007ffff609b73c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
                                              at /home/oreilly/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Core.so.5
                                          #99 0x00007ffff6041662 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /home/oreilly/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Core.so.5
                                          #100 0x00007ffff604a590 in QCoreApplication::exec() ()
                                              at /home/oreilly/Qt5.14.2/5.14.2/gcc_64/lib/libQt5Core.so.5
                                          #101 0x0000555555557222 in main(int, char**) (argc=<optimized out>, argv=<optimi
                                          
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