Segfault on command line generation

[Jasem Mutlaq]

There were a couple of crash fixes recently. Please use KStars nightly
release or compile from GIT and retry again.

--
Best Regards,
Jasem Mutlaq



On Fri, Jul 3, 2020 at 11:37 PM Umair Khan <ukhan at pdx.edu> wrote:

> Hello, thanks for the response. The command I am using is: kstars --dump
> --filename kstars.png --height 640 --width 480. I got the command from this
> page in the handbook:
> https://docs.kde.org/trunk5/en/extragear-edu/kstars/dumpmode.html
> I also just ran it with gdb. Below is the backtrace.
>
> ...
> Loading satellites
> [New Thread 0x7fffb7659700 (LWP 16238)]
> QPaintDevice: Cannot destroy paint device that is being painted
> Thread 1 "kstars" received signal SIGSEGV, Segmentation fault.
> 0x00007ffff30da7a6 in QPainter::end() () from
> /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> (gdb) bt
> #0  0x00007ffff30da7a6 in QPainter::end() () at
> /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #1  0x00007ffff30db3f8 in QPainter::~QPainter() () at
> /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #2  0x0000555555b2ad28 in SkyLabeler::~SkyLabeler() (this=0x555556a94000,
> __in_chrg=<optimized out>) at ./kstars/skycomponents/skylabeler.cpp:111
> #3  0x0000555555679f01 in
> std::default_delete<SkyLabeler>::operator()(SkyLabeler*) const
> (this=<optimized out>, __ptr=0x555556a94000) at
> /usr/include/c++/7/bits/unique_ptr.h:78
> #4  0x0000555555679f01 in std::unique_ptr<SkyLabeler,
> std::default_delete<SkyLabeler> >::~unique_ptr() (this=0x5555569549b8,
> __in_chrg=<optimized out>) at /usr/include/c++/7/bits/unique_ptr.h:263
> #5  0x0000555555679f01 in SkyMapComposite::~SkyMapComposite()
> (this=0x5555569548c0, __in_chrg=<optimized out>) at
> ./kstars/skycomponents/skymapcomposite.h:84
> #6  0x000055555567e2c8 in SkyMapComposite::~SkyMapComposite()
> (this=0x5555569548c0, __in_chrg=<optimized out>) at
> ./kstars/skycomponents/skymapcomposite.h:84
> #7  0x000055555567e2c8 in
> std::default_delete<SkyMapComposite>::operator()(SkyMapComposite*) const
> (this=<optimized out>, __ptr=0x5555569548c0) at
> /usr/include/c++/7/bits/unique_ptr.h:78
> #8  0x000055555567e2c8 in std::unique_ptr<SkyMapComposite,
> std::default_delete<SkyMapComposite> >::~unique_ptr() (this=0x55555691ae18,
> __in_chrg=<optimized out>) at /usr/include/c++/7/bits/unique_ptr.h:263
> #9  0x000055555567e2c8 in KStarsData::~KStarsData() (this=0x55555691ae00,
> __in_chrg=<optimized out>) at ./kstars/kstarsdata.cpp:119
> #10 0x000055555567e4bd in KStarsData::~KStarsData() (this=0x55555691ae00,
> __in_chrg=<optimized out>) at ./kstars/kstarsdata.cpp:130
> #11 0x000055555562c9a5 in main(int, char**) (argc=<optimized out>,
> argv=<optimized out>) at ./kstars/main.cpp:309
>
> Thank you for the workaround, I will look into that as well.
>
> Best,
> Umair
>
> On Jul 3 2020, at 1:25 pm, Akarsh Simha <akarshsimha at gmail.com> wrote:
>
> Hi Umair
>
> I don’t see the instructions you refer to. Could you give me the procedure
> you used? I’m not very familiar with valgrind either, but a backtrace from
> running under gdb should suffice. If you can tell me how you’re invoking it
> from the command line, I’ll look into it and see if I can reproduce the
> crash.
>
> Also: a workaround is to get the charts from the DBus interface when
> KStars is fully up and running.
>
> Regards
> Akarsh
>
>
> On Fri, Jul 3, 2020 at 10:19 Umair Khan <ukhan at pdx.edu> wrote:
>
> Hello,
>
> My name is Umair Khan, and I'm a student at Portland State University in
> Oregon. I'm not sure if this mailing list is a place to seek user support,
> so apologies if this is not the correct way to ask questions.
>
> I'm trying to use KStars to generate images of the night sky from the
> command line, as per the instructions listed here. However, when I attempt
> to do so, the program segfaults with no error messages, and I'm not quite
> sure if or how this issue can be fixed. I was hoping someone here could
> provide some insight or a solution.
>
> The GUI, on the other hand, works completely fine (at least as far as I
> can tell). Below are the details for the hardware I'm running KStars on:
>
>    - OS: Ubuntu 18.04.4
>    - Kernel: 4.15.0-108-generic
>    - DE: GNOME 3.28.4
>    - CPU: Intel Core i7-6600u
>
> In addition, I have attached two text files to this email containing shell
> input/output. One is for the plain command (default.txt), and another is a
> debug run using valgrind (valgrind.txt). Valgrind does appear to show
> several errors, but I am not quite sure how to interpret them or go about
> fixing them. Any help would be much appreciated.
>
> Thanks a lot for your consideration!
>
> Best,
> Umair
>
>
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