crash when undoing paste of an object with any LPE

[Alexandre Prokoudine]

1. Create an object
2. Apply an LPE to it
3. Copy the object to clipboard
4. Paste it anywhere
5. Press Ctrl-Z to undo pasting
6. Inkscape crashes

gdb output:

(gdb) run
Starting program: /usr/bin/inkscape
[Thread debugging using libthread_db enabled]
[New Thread 0xb61ba720 (LWP 3970)]

** (inkscape:3970): CRITICAL **: void Inkscape::LivePathEffect::Effect::addHelperPaths(SPLPEItem*, SPDesktop*): assertion `SP_IS_PATH(lpeitem)' failed

** (inkscape:3970): CRITICAL **: void Inkscape::LivePathEffect::Effect::addHelperPaths(SPLPEItem*, SPDesktop*): assertion `SP_IS_PATH(lpeitem)' failed

** (inkscape:3970): CRITICAL **: void SPObject::requestDisplayUpdate(unsigned int): assertion `this->document != NULL' failed

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb61ba720 (LWP 3970)]
0xb742d78b in g_object_unref () from /usr/lib/libgobject-2.0.so.0
(gdb) bt
#0 0xb742d78b in g_object_unref () from /usr/lib/libgobject-2.0.so.0
#1 0x081f0260 in ~KnotHolderEntity (this=0xe75bcd0) at knot-holder-entity.cpp:59
#2 0x084d4397 in ~PointParam (this=0xe75bca4) at live_effects/parameter/point.cpp:47
#3 0x084cec2d in ~LPECopyRotate (this=0xe75bbb0) at live_effects/lpe-copy_rotate.cpp:65
#4 0x084924df in livepatheffect_release (object=0xc42f9e8) at live_effects/lpeobject.cpp:159
#5 0x080dc9d8 in SPObject::releaseReferences (this=0xc42f9e8) at sp-object.cpp:871
#6 0x080dcd29 in sp_object_detach (parent=0x88df238, object=0xc42f9e8) at sp-object.cpp:650
#7 0x08621192 in Inkscape::XML::CompositeNodeObserver::notifyChildRemoved (this=0x8bf4430, node=@0x8bf4470, child=@0xe356470, prev=0xe3564f0) at xml/composite-node-observer.cpp:49
#8 0x0861c93b in Inkscape::XML::SimpleNode::removeChild (this=0x8bf4400, child=0xe356470) at xml/simple-node.cpp:449
#9 0x0861de6a in Inkscape::XML::EventAdd::_undoOne (this=0xc89cf48, observer=@0x88af4a0) at xml/event.cpp:153
#10 0x0861de30 in Inkscape::XML::undo_log_to_observer (log=0xe353d40, observer=@0x88af4a0) at xml/event.h:50
#11 0x0861f06c in sp_repr_undo_log (log=0xe353d40) at xml/event.cpp:147
#12 0x0815ebaf in sp_document_undo (doc=0x8bf7f60) at document-undo.cpp:267
#13 0x080a7c4a in sp_undo (desktop=0x8c2de00) at selection-chemistry.cpp:807
#14 0x083e727d in sp_action_perform (action=0x8bfdaf0, data=0x0) at helper/action.cpp:181
#15 0x080b5ad8 in sp_shortcut_invoke (shortcut=33554554, view=0x8c2de00) at shortcuts.cpp:55
#16 0x083ed4b7 in on_window_key_press (event=0xe6ff6a0) at helper/window.cpp:34
#17 0x083ed6a4 in sigc::internal::slot_call1<sigc::pointer_functor1<_GdkEventKey*, bool>, bool, _GdkEventKey*>::call_it (rep=0x9e81c28, a_1=@0xbfe16804)
    at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:111
#18 0xb7e0843e in ?? () from /usr/lib/libgtkmm-2.4.so.1
#19 0xb77088d4 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#20 0xb742b759 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#21 0xb74400a3 in ?? () from /usr/lib/libgobject-2.0.so.0
#22 0xb744164e in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#23 0xb7441c59 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#24 0xb7827667 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#25 0xb7701c0d in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#26 0xb7702d88 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#27 0xb757ba9a in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#28 0xb7390bf8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#29 0xb7393e5e in ?? () from /usr/lib/libglib-2.0.so.0
#30 0xb73941e7 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#31 0xb7703264 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#32 0xb7d7f307 in Gtk::Main::run_impl () from /usr/lib/libgtkmm-2.4.so.1
#33 0xb7d7f0f2 in Gtk::Main::run () from /usr/lib/libgtkmm-2.4.so.1
#34 0x08086b6e in sp_main_gui (argc=1, argv=0xbfe170e4) at main.cpp:800
#35 0x081f569b in Inkscape::NSApplication::Application::run (this=0xbfe17024) at application/application.cpp:117
#36 0x0808661f in main (argc=1, argv=0xbfe170e4) at main.cpp:610
(gdb) quit

[Maximilian Albert (cilix)]

I don't see a crash, but I do get error messages which indicate there is a problem. Thank you for the backtrace (especially since I currently can't produce any of my own due to build problems). I'll try to look into it.

[Alvin Penner (apenner)]

running Win32 nightly build from June 27. I used the Gears Effect, did not get a crash, but got the following exit messages.

C:\Python25\APP>inkcl.py

** (inkscape.exe:472): CRITICAL **: void Inkscape::LivePathEffect::Effect::addHe
lperPaths(SPLPEItem*, SPDesktop*): assertion `SP_IS_PATH(lpeitem)' failed

** (inkscape.exe:472): CRITICAL **: void SPObject::requestDisplayUpdate(unsigned int): assertion `this->document != NULL' failed

[bbyak (buliabyak)]

no crash now, linux rev 19232

[Mx (maxjeanpierre)]

On XP,/Vista, inkscape crashes too, but at the past operation: (Inkscape20046-0810241438)

create LPE
copy
paste -> crash

copy saved

[ScislaC (scislac)]

Mx,

The paste crash you mentioned was fixed yesterday in svn. :)

[Mx (maxjeanpierre)]

Oh ok great. I have to wait to the next build. Thanks a lot for the
information;

Mx

> Mx,
>
> The paste crash you mentioned was fixed yesterday in svn. :)
>
>

[ScislaC (scislac)]

This is fixed in Current SVN (was fixed prior to Rev 20070).