Segmentation fault on start (Wayland)

[Erhannis]

I've built from source, and I get a segmentation fault when I try to start the program. No warnings, no explanations, no log files, just

$ ahoviewer 
Segmentation fault
$

I'm at a bit of a loss as to what to do.

I'm on Debian 10.3, GNOME 3.30.2 ... using Wayland, I think?

[ahodesuka]

This probably has something to do with Wayland, but I have no method of testing. If you could run ahoviewer with gdb and give a backtrace that would be very helpful.

[Erhannis]

Is this what you wanted?

GNU gdb (Debian 8.2.1-2+b3) 8.2.1
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For help, type "help".
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Reading symbols from ahoviewer...done.
(gdb) run
Starting program: /usr/local/bin/ahoviewer 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff06c9700 (LWP 8193)]
[New Thread 0x7fffefec8700 (LWP 8194)]
[New Thread 0x7fffef6c7700 (LWP 8195)]
[New Thread 0x7fffeeec6700 (LWP 8196)]
[New Thread 0x7fffee4aa700 (LWP 8197)]
[New Thread 0x7fffedca9700 (LWP 8198)]
[Thread 0x7fffedca9700 (LWP 8198) exited]
[Detaching after fork from child process 8199]

Thread 1 "ahoviewer" received signal SIGSEGV, Segmentation fault.
0x00007ffff6ab34bb in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
(gdb) bt
#0  0x00007ffff6ab34bb in  () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#1  0x00007ffff6ab3d05 in _XFlush () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#2  0x00007ffff6ab67f5 in _XGetRequest ()
    at /usr/lib/x86_64-linux-gnu/libX11.so.6
#3  0x00007ffff6aa0fc4 in XListExtensions ()
    at /usr/lib/x86_64-linux-gnu/libX11.so.6
#4  0x0000555555679aa7 in AhoViewer::ImageBox::ImageBox(_GtkScrolledWindow*, Glib::RefPtr<Gtk::Builder> const&)
    (this=0x555555940e10, cobj=0x555555e94e60, bldr=..., __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../src/imagebox.cc:115
#5  0x00005555556baeb5 in Gtk::Builder::get_widget_derived<AhoViewer::ImageBox>(Glib::ustring const&, AhoViewer::ImageBox*&)
    (this=0x555555d53200, name=..., widget=@0x55555596e7b8: 0x0)
    at /usr/include/gtkmm-3.0/gtkmm/builder.h:781
#6  0x00005555556a18da in AhoViewer::MainWindow::MainWindow(_GtkApplicationWindow*, Glib::RefPtr<Gtk::Builder>)
    (this=0x55555596e750, cobj=0x555555e9e2b0, bldr=..., __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../src/mainwindow.cc:35
#7  0x0000555555673247 in Gtk::Builder::get_widget_derived<AhoViewer::MainWindow>(Glib::ustring const&, AhoViewer::MainWindow*&)
    (this=0x555555d53200, name=..., widget=@0x7fffffffcff0: 0x0)
    at /usr/include/gtkmm-3.0/gtkmm/builder.h:781
#8  0x0000555555671de3 in AhoViewer::Application::create_window()
--Type <RET> for more, q to quit, c to continue without paging--c
    (this=0x5555557b76c0 <AhoViewer::Application::get_instance()::app>) at ../src/application.cc:144
#9  0x0000555555672019 in AhoViewer::Application::on_activate() (this=0x5555557b76c0 <AhoViewer::Application::get_instance()::app>) at ../src/application.cc:172
#10 0x00007ffff769c6bb in Gio::Application_Class::activate_callback(_GApplication*) () at /usr/lib/x86_64-linux-gnu/libgiomm-2.4.so.1
#11 0x00007ffff7f01c8d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007ffff7f14bbd in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007ffff7f1e2be in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007ffff7f1e97f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007ffff6ca57e8 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#16 0x00007ffff769c1db in Gio::Application::local_command_line_vfunc(char**&, int&) () at /usr/lib/x86_64-linux-gnu/libgiomm-2.4.so.1
#17 0x00007ffff769c42d in Gio::Application_Class::local_command_line_vfunc_callback(_GApplication*, char***, int*) () at /usr/lib/x86_64-linux-gnu/libgiomm-2.4.so.1
#18 0x00007ffff6ca599b in g_application_run () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#19 0x0000555555671ffd in AhoViewer::Application::run(int, char**) (this=0x5555557b76c0 <AhoViewer::Application::get_instance()::app>, argc=1, argv=0x7fffffffd868) at ../src/application.cc:167
#20 0x000055555569eeef in main(int, char**) (argc=1, argv=0x7fffffffd868) at ../src/main.cc:5
(gdb) 

[ahodesuka]

Yeah that works, I know where the problem is now, I'll try to fix it soon.

[Erhannis]

Oh cool; thanks

[TypicalFence]

I have the same issue on under xorg

different backtrace tho:

(gdb) bt
#0  0x00007ffff7c13b63 in Gtk::Widget::hide() () at /usr/lib/libgtkmm-3.0.so.1
#1  0x000055555587d8f1 in AhoViewer::ImageBox::clear_image() (this=0x5555560009e0)
    at ../src/imagebox.cc:277
#2  0x000055555587d064 in AhoViewer::ImageBox::~ImageBox()
    (this=0x5555560009e0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>)
    at ../src/imagebox.cc:209
#3  0x000055555587d252 in AhoViewer::ImageBox::~ImageBox()
    (this=0x5555560009e0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>)
    at ../src/imagebox.cc:213
#4  0x00007ffff7d99a67 in g_datalist_clear () at /usr/lib/libglib-2.0.so.0
#5  0x00007ffff7eb97b1 in g_object_unref () at /usr/lib/libgobject-2.0.so.0
#6  0x00007ffff7da6eef in g_hash_table_destroy () at /usr/lib/libglib-2.0.so.0
#7  0x00007ffff6fc2bb4 in  () at /usr/lib/libgtk-3.so.0
#8  0x00007ffff7eb97b1 in g_object_unref () at /usr/lib/libgobject-2.0.so.0
#9  0x00005555557e5a51 in Glib::RefPtr<Gtk::Builder>::~RefPtr()
    (this=0x7fffffffd5b0, __in_chrg=<optimized out>) at /usr/include/glibmm-2.4/glibmm/refptr.h:273
#10 0x0000555555873e5e in AhoViewer::Application::create_window()
    (this=0x5555559c6ae0 <AhoViewer::Application::get_instance()::app>) at ../src/application.cc:131
#11 0x0000555555873f10 in AhoViewer::Application::on_activate()
    (this=0x5555559c6ae0 <AhoViewer::Application::get_instance()::app>) at ../src/application.cc:172
#12 0x00007ffff778c33c in Gio::Application_Class::activate_callback(_GApplication*) ()
    at /usr/lib/libgiomm-2.4.so.1
#13 0x00007ffff7ec998a in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#14 0x00007ffff7ec9b00 in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#15 0x00007ffff6d1eb09 in  () at /usr/lib/libgio-2.0.so.0
#16 0x00007ffff778bdba in Gio::Application::local_command_line_vfunc(char**&, int&) ()
    at /usr/lib/libgiomm-2.4.so.1
#17 0x00007ffff778c0b1 in Gio::Application_Class::local_command_line_vfunc_callback(_GApplication*, char***, int*) () at /usr/lib/libgiomm-2.4.so.1
#18 0x00007ffff6d1ec8a in g_application_run () at /usr/lib/libgio-2.0.so.0
#19 0x0000555555873ee5 in AhoViewer::Application::run(int, char**)
    (this=0x5555559c6ae0 <AhoViewer::Application::get_instance()::app>, argc=1, argv=0x7fffffffdb68)
    at ../src/application.cc:167
#20 0x00005555558a4067 in main(int, char**) (argc=1, argv=0x7fffffffdb68) at ../src/main.cc:5

[TypicalFence]

nevermind it seems like it had something to do with my old settings files, deleting them made it run

[tzlils]

been getting another segfault now, using sway version 1.6-rc2-62fbf33c (Apr 3 2021, branch 'master')

Thread 1 "ahoviewer" received signal SIGSEGV, Segmentation fault.
0x00007ffff5795751 in xcb_take_socket () from /usr/lib/libxcb.so.1
(gdb) bt
#0  0x00007ffff5795751 in xcb_take_socket () at /usr/lib/libxcb.so.1
#1  0x00007ffff6af8b6f in  () at /usr/lib/libX11.so.6
#2  0x00007ffff6af94d5 in _XFlush () at /usr/lib/libX11.so.6
#3  0x00007ffff6afc1f6 in _XGetRequest () at /usr/lib/libX11.so.6
#4  0x00007ffff6ae5fb3 in XListExtensions () at /usr/lib/libX11.so.6
#5  0x00005555556810d0 in AhoViewer::ImageBox::ImageBox(_GtkScrolledWindow*, Glib::RefPtr<Gtk::Builder> const&)
    (this=0x5555559b2410, cobj=0x555555c1cd00, bldr=..., __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../src/imagebox.cc:115
#6  0x00005555556c5119 in Gtk::Builder::get_widget_derived<AhoViewer::ImageBox>(Glib::ustring const&, AhoViewer::ImageBox*&) (this=0x555555be08f0, name=..., widget=@0x555555987f08: 0x0)
    at /usr/include/gtkmm-3.0/gtkmm/builder.h:801
#7  0x00005555556ab1a5 in AhoViewer::MainWindow::MainWindow(_GtkApplicationWindow*, Glib::RefPtr<Gtk::Builder>)
    (this=0x555555987ea0, cobj=0x555555c362c0, bldr=..., __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../src/mainwindow.cc:35
#8  0x000055555567a0f1 in Gtk::Builder::get_widget_derived<AhoViewer::MainWindow>(Glib::ustring const&, AhoViewer::MainWindow*&) (this=0x555555be08f0, name=..., widget=@0x7fffffffe388: 0x0)
    at /usr/include/gtkmm-3.0/gtkmm/builder.h:801
#9  0x0000555555678ca0 in AhoViewer::Application::create_window() (this=0x5555557c1880 <AhoViewer::Application::get_instance()::app>) at ../src/application.cc:144
#10 0x0000555555678ee6 in AhoViewer::Application::on_activate() (this=0x5555557c1880 <AhoViewer::Application::get_instance()::app>) at ../src/application.cc:172
#11 0x00007ffff77b135c in Gio::Application_Class::activate_callback(_GApplication*) () at /usr/lib/libgiomm-2.4.so.1
#12 0x00007ffff7ef0096 in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0
#13 0x00007ffff7ef0210 in g_signal_emit () at /usr/lib/libgobject-2.0.so.0
#14 0x00007ffff6d40079 in  () at /usr/lib/libgio-2.0.so.0
#15 0x00007ffff77b0dda in Gio::Application::local_command_line_vfunc(char**&, int&) () at /usr/lib/libgiomm-2.4.so.1
#16 0x00007ffff77b10d1 in Gio::Application_Class::local_command_line_vfunc_callback(_GApplication*, char***, int*) () at /usr/lib/libgiomm-2.4.so.1
#17 0x00007ffff6d401fa in g_application_run () at /usr/lib/libgio-2.0.so.0
#18 0x0000555555678ebb in AhoViewer::Application::run(int, char**) (this=0x5555557c1880 <AhoViewer::Application::get_instance()::app>, argc=1, argv=0x7fffffffe938) at ../src/application.cc:167
#19 0x00005555556a86ab in main(int, char**) (argc=1, argv=0x7fffffffe938) at ../src/main.cc:5

[ahodesuka]

@tzlils You're 100% sure you are running the latest version of ahoviewer?

[tzlils]

@tzlils You're 100% sure you are running the latest version of ahoviewer?

i think i was using ahoviewer-git from the AUR, but regardless i compiled latest and it works now