Hello,
[EDIT 6/09] Fixed
when or after playing an animation, hitting ALT focusing on canevas windows cause synfig a segfault
is it hurting just me ?
debian 7 / xfce 4.10 / Development version: Revision: 20130902 / Branch: master / Revision ID: 427899 / Built on Sep 3 2013
reproduced here.
Process: synfigstudio [1880]
Path: /Applications/SynfigStudio.app/Contents/MacOS/SynfigStudio
Identifier: synfigstudio
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: launchd [156]
Date/Time: 2013-09-04 20:29:34.928 +0800
OS Version: Mac OS X 10.7.5 (11G63b)
Report Version: 9
Interval Since Last Report: 2459016 sec
Crashes Since Last Report: 280
Per-App Crashes Since Last Report: 210
Anonymous UUID: 5477F283-5DBE-45B7-A77E-2F990B531192
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
__TEXT 0000000100000000-000000010065b000 [ 6508K] r-x/rwx SM=COW /Applications/SynfigStudio.app/Contents/Resources/synfig/bin/synfigstudio
Application Specific Information:
objc[1880]: garbage collection is OFF
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libgtkmm-2.4.1.dylib 0x0000000101e9c2a2 Gtk::Widget::event(_GdkEvent*) + 4
1 synfigstudio 0x00000001002fc07a studio::CanvasView::on_key_press_event(_GdkEventKey*) + 120
2 libgtkmm-2.4.1.dylib 0x0000000101e988bb Gtk::Widget_Class::key_press_event_callback(_GtkWidget*, _GdkEventKey*) + 103
3 libgtk-x11-2.0.0.dylib 0x00000001025a6f9a _gtk_marshal_BOOLEAN__BOXED + 169
4 libgobject-2.0.0.dylib 0x00000001030fd50c g_closure_invoke + 399
5 libgobject-2.0.0.dylib 0x000000010310fe8e signal_emit_unlocked_R + 4569
6 libgobject-2.0.0.dylib 0x00000001031117f9 g_signal_emit_valist + 4044
7 libgobject-2.0.0.dylib 0x0000000103111c1b g_signal_emit + 148
8 libgtk-x11-2.0.0.dylib 0x00000001026a01f0 gtk_widget_event_internal + 713
9 libgtk-x11-2.0.0.dylib 0x00000001025a06ee gtk_propagate_event + 262
10 libgtk-x11-2.0.0.dylib 0x00000001025a16db gtk_main_do_event + 1215
11 libgdk-x11-2.0.0.dylib 0x000000010298d368 gdk_event_dispatch + 84
12 libglib-2.0.0.dylib 0x000000010329ed1c g_main_context_dispatch + 304
13 libglib-2.0.0.dylib 0x00000001032a12af g_main_context_iterate + 389
14 libglib-2.0.0.dylib 0x00000001032a1485 g_main_context_iteration + 65
15 libgtk-x11-2.0.0.dylib 0x00000001025a17fc gtk_main_iteration_do + 37
16 libgtkmm-2.4.1.dylib 0x0000000101e3097f Gtk::Main::iteration_impl(bool) + 13
17 libgtkmm-2.4.1.dylib 0x0000000101e30908 Gtk::Main::iteration(bool) + 22
18 synfigstudio 0x00000001002f7b4b studio::CanvasView::play() + 1303
19 synfigstudio 0x00000001002f7c7f studio::CanvasView::on_play_pause_pressed() + 65
20 synfigstudio 0x000000010031f3ba sigc::bound_mem_functor0<void, studio::CanvasView>::operator()() const + 110
21 synfigstudio 0x000000010031f3d5 sigc::adaptor_functor<sigc::bound_mem_functor0<void, studio::CanvasView> >::operator()() const + 25
22 synfigstudio 0x000000010031f48b sigc::internal::slot_call0<sigc::bound_mem_functor0<void, studio::CanvasView>, void>::call_it(sigc::internal::slot_rep*) + 33
23 libglibmm-2.4.1.dylib 0x00000001024301e2 Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) + 66
24 libgobject-2.0.0.dylib 0x00000001030fd50c g_closure_invoke + 399
25 libgobject-2.0.0.dylib 0x000000010310ffcb signal_emit_unlocked_R + 4886
26 libgobject-2.0.0.dylib 0x0000000103111799 g_signal_emit_valist + 3948
27 libgobject-2.0.0.dylib 0x0000000103111c1b g_signal_emit + 148
28 libgtk-x11-2.0.0.dylib 0x0000000102509b0b gtk_real_button_released + 52
29 libgobject-2.0.0.dylib 0x00000001030fd2c3 _g_closure_invoke_va + 433
30 libgobject-2.0.0.dylib 0x0000000103110ce0 g_signal_emit_valist + 1203
31 libgobject-2.0.0.dylib 0x0000000103111c1b g_signal_emit + 148
32 libgtk-x11-2.0.0.dylib 0x000000010250733e gtk_button_button_release + 15
33 libgtk-x11-2.0.0.dylib 0x00000001025a6f9a _gtk_marshal_BOOLEAN__BOXED + 169
34 libgobject-2.0.0.dylib 0x00000001030fd50c g_closure_invoke + 399
35 libgobject-2.0.0.dylib 0x000000010310fe8e signal_emit_unlocked_R + 4569
36 libgobject-2.0.0.dylib 0x00000001031117f9 g_signal_emit_valist + 4044
37 libgobject-2.0.0.dylib 0x0000000103111c1b g_signal_emit + 148
38 libgtk-x11-2.0.0.dylib 0x00000001026a01f0 gtk_widget_event_internal + 713
39 libgtk-x11-2.0.0.dylib 0x00000001025a0714 gtk_propagate_event + 300
40 libgtk-x11-2.0.0.dylib 0x00000001025a16db gtk_main_do_event + 1215
41 libgdk-x11-2.0.0.dylib 0x000000010298d368 gdk_event_dispatch + 84
42 libglib-2.0.0.dylib 0x000000010329ed1c g_main_context_dispatch + 304
43 libglib-2.0.0.dylib 0x00000001032a12af g_main_context_iterate + 389
44 libglib-2.0.0.dylib 0x00000001032a141b g_main_loop_run + 327
45 libgtk-x11-2.0.0.dylib 0x00000001025a199e gtk_main + 163
46 synfigstudio 0x0000000100026eba main + 1661
47 synfigstudio 0x0000000100026698 start + 52
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff913bb7e6 kevent + 10
1 libdispatch.dylib 0x00007fff91398786 _dispatch_mgr_invoke + 923
2 libdispatch.dylib 0x00007fff91397316 _dispatch_mgr_thread + 54
Thread 2:
...my turn of stack call ;
Thread 1 (Thread 0xb5fdd880 (LWP 4338)):
#0 0xb766625b in Gtk::Widget::event(_GdkEvent*) () from /usr/lib/libgtkmm-2.4.so.1
#1 0x0860cfb8 in studio::CanvasView::on_key_press_event (this=0x8f59918, event=0x9088b38) at canvasview.cpp:2459
#2 0xb7661734 in Gtk::Widget_Class::key_press_event_callback(_GtkWidget*, _GdkEventKey*) () from /usr/lib/libgtkmm-2.4.so.1
#3 0xb6ece8a2 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#4 0xb6803acd in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#5 0xb6804c56 in g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#6 0xb6816b36 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#7 0xb681ed73 in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#8 0xb681f2b3 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#9 0xb7005dab in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#10 0xb6ecca7c in gtk_propagate_event () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#11 0xb6eccd38 in gtk_main_do_event () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#12 0xb6c9dae8 in ?? () from /usr/lib/i386-linux-gnu/libgdk-x11-2.0.so.0
#13 0xb673a483 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#14 0xb673a820 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#15 0xb673a901 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#16 0xb6ecbd91 in gtk_main_iteration_do () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#17 0xb75da1fc in Gtk::Main::iteration_impl(bool) () from /usr/lib/libgtkmm-2.4.so.1
#18 0xb75daea8 in Gtk::Main::iteration(bool) () from /usr/lib/libgtkmm-2.4.so.1
#19 0x08610b90 in studio::CanvasView::play (this=0x8f59918) at canvasview.cpp:3286
#20 0x0861b900 in studio::CanvasView::on_play_pause_pressed (this=0x8f59918) at canvasview.cpp:4217
#21 0x0862ce4c in sigc::bound_mem_functor0<void, studio::CanvasView>::operator() (this=0x8ff268c) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#22 0x0862a460 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, studio::CanvasView> >::operator() (this=0x8ff2688) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#23 0x08627086 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, studio::CanvasView>, void>::call_it (rep=0x8ff2670) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#24 0xb6d6ce53 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () from /usr/lib/i386-linux-gnu/libglibmm-2.4.so.1
#25 0xb68069cf in g_cclosure_marshal_VOID__VOID () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#26 0xb6804c56 in g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#27 0xb68171c2 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#28 0xb681f0db in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#29 0xb681f2b3 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#30 0xb6e0f53a in gtk_button_clicked () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#31 0xb6e10940 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#32 0xb758ed7d in Gtk::Button_Class::released_callback(_GtkButton*) () from /usr/lib/libgtkmm-2.4.so.1
#33 0xb6806a1a in g_cclosure_marshal_VOID__VOIDv () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#34 0xb6803587 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#35 0xb6804f01 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#36 0xb681e6fe in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#37 0xb681f2b3 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#38 0xb6e0f45a in gtk_button_released () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#39 0xb6e0f4a4 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#40 0xb7661b95 in Gtk::Widget_Class::button_release_event_callback(_GtkWidget*, _GdkEventButton*) () from /usr/lib/libgtkmm-2.4.so.1
#41 0xb6ece8a2 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#42 0xb6803acd in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#43 0xb6804c56 in g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#44 0xb6816b36 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#45 0xb681ed73 in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#46 0xb681f2b3 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#47 0xb7005dab in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#48 0xb6ecc9a4 in gtk_propagate_event () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#49 0xb6eccd38 in gtk_main_do_event () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#50 0xb6c9dae8 in ?? () from /usr/lib/i386-linux-gnu/libgdk-x11-2.0.so.0
#51 0xb673a483 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#52 0xb673a820 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#53 0xb673acfb in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#54 0xb6ecbad0 in gtk_main () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#55 0xb75da264 in Gtk::Main::run_impl() () from /usr/lib/libgtkmm-2.4.so.1
#56 0xb75dac9f in Gtk::Main::run() () from /usr/lib/libgtkmm-2.4.so.1
#57 0x083c6b02 in main (argc=0, argv=0xbffffb04) at main.cpp:108
Yes, it breaks for me too. Fedora 19 KDE with Development version:
Revision: 20130826
Branch: master
Revision ID: 034175
Built on Aug 26 2013
Built with:
ETL 0.04.16
Synfig API (006000)
Synfig library 47
GTK+ 2.16.6
GNU G++ 4.1.2
Using:
Synfig 0.64.0
GTK+ 2.24.19
Reproduced here too, Windows version 32 bits, in-house development snapshot.
By the backtrace you have reported it looks like there is a null pointer at the following member:
bool
CanvasView::on_key_press_event(GdkEventKey* event)
{
Gtk::Widget* focused_widget = get_focus();
if(focused_widget_has_priority(focused_widget))
{
if(focused_widget->event((GdkEvent*)event))
return true;
}
else if(Gtk::Window::on_key_press_event(event))
return true;
else return focused_widget->event((GdkEvent*)event);
return false;
}
focused_widget is null and it is not checked before used.
Anyone to send a patch for this? 
By the way, I think it was me who added that code to the CanvasView some time ago, so you can blame on me for that! 
… but please, keep calm and code Synfig.
-G
I wait to say “i can take a look” i start to have experience in null pointer test…
but after get_window hunt.
bouh… i blame you because you dedicate too much to improve that things ! you own major part of bugs because you own major part of improvements … bouhhh 