gtk_main_get_window_group function return different results for gtk_grab_add and gtk_grab_remove, but widget address was same in both functions:
if (GTK_IS_WINDOW (toplevel)) return gtk_window_get_group (GTK_WINDOW (toplevel)); else return gtk_window_get_group (NULL); On gtk_grab_add window group is 0x555555b0b160 for widget 0x555555e50780: Thread 1 "mate-terminal" hit Breakpoint 3, gtk_main_get_window_group (widget=0x555555e50780) at ././gtk/gtkmain.c:2 025 2025 if (GTK_IS_WINDOW (toplevel)) $2044 (widget) = 0x555555e50780 $2045 (toplevel) = 0x555555e50780 $2046 (*widget) = {parent_instance = {g_type_instance = {g_class = 0x555555e5e800}, ref_count = 1, qdata = 0x2}, priv = 0x555 555e50690} $2047 (*widget.priv) = {..., window = 0x0, registered_windows = 0x0, parent = 0x0, event_contr ollers = 0x0, accessible = 0x0} #0 gtk_main_get_window_group (widget=0x555555e50780) at ././gtk/gtkmain.c:2025 #1 0x00007ffff71f3bb3 in gtk_grab_add (widget=0x555555e50780) at ././gtk/gtkmain.c:2231 #2 0x00007ffff70ac1d1 in gtk_cell_renderer_accel_start_editing (cell=0x555555845270, event=0x555555d416f0, widget= 0x555555e183f0, path=0x555555e57720 "2:0", background_area=0x7fffffffc2e0, cell_area=0x7fffffffc2e0, flags=(unknown : 0)) at ././gtk/gtkcellrendereraccel.c:497 #3 0x00007ffff70a92dd in gtk_cell_renderer_start_editing (cell=0x555555845270, event=0x555555d416f0, widget=0x5555 55e183f0, path=0x555555e57720 "2:0", background_area=0x7fffffffc2e0, cell_area=0x7fffffffc2e0, flags=(unknown: 0)) at ././gtk/gtkcellrenderer.c:921 #4 0x00007ffff709d47e in gtk_cell_area_activate_cell (area=0x555555e0d140, widget=0x555555e183f0, renderer=0x555555845270, event=0x555555d416f0, cell_area=0x7fffffffc380, flags=(unknown: 0)) at ././gtk/gtkcellarea.c:3432 #5 0x00007ffff7096407 in gtk_cell_area_real_event (area=0x555555e0d140, context=0x555555e26850, widget=0x555555e183f0, event=0x555555d416f0, cell_area=0x7fffffffc570, flags=(unknown: 0)) at ././gtk/gtkcellarea.c:1101 At time of gtk_grab_remove, when event is delivered to widget 0x555555e50780 from gtk_main_do_event, its toplevel was 0x555555ddb0d0 Thread 1 "mate-terminal" hit Breakpoint 3, gtk_main_get_window_group (widget=0x555555e50780) at ././gtk/gtkmain.c:2025 2025 if (GTK_IS_WINDOW (toplevel)) $2092 (widget) = 0x555555e50780 $2093 (toplevel) = 0x555555ddb0d0 $2094 (*widget) = {parent_instance = {g_type_instance = {g_class = 0x555555e5e800}, ref_count = 7, qdata = 0x555555ecf180}, priv = 0x555555e50690} $2095 (*widget.priv) = {...., window = 0x555555e507e0, registered_windows = 0x55555595 7d00, parent = 0x555555e183f0, event_controllers = 0x0, accessible = 0x555555e1d320} #0 gtk_main_get_window_group (widget=0x555555e50780) at ././gtk/gtkmain.c:2025 #1 0x00007ffff71f3d8c in gtk_grab_remove (widget=0x555555e50780) at ././gtk/gtkmain.c:2286 #2 0x00007ffff70ac56b in gtk_cell_editable_event_box_key_press_event (widget=0x555555e50780, event=0x555555e473c0) at ././gtk/gtkcellrendereraccel.c:645 Parent of the widget was changed by gtk_tree_view_multipress_gesture_pressed -> .. -> gtk_cell_area_activate_cell -> gtk_cell_area_add_editable -> ..signal.. -> gtk_tree_view_column_add_editable_callback -> _gtk_tree_view_add_editable -> gtk_tree_view_put -> gtk_widget_set_parent So, gtk_cell_area_activate_cell of gtk+3 (3.22.7) has incorrect order of actions which broke gtk_grab_add / gtk_grab_remove pair https://github.com/GNOME/gtk/blob/6cc08d60efeb02afc0d67982c3dc205dfd16d7cd/gtk/gtkcellarea.c#L3388 3428 gtk_cell_renderer_start_editing (renderer, ... 3444 gtk_cell_area_add_editable (area, priv->focus_cell, editable_widget, cell_area); -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1667227 Title: mate-terminal crashed with SIGSEGV in g_type_check_instance_is_a() - while editing Keyboard Shortcuts Status in gnome-terminal package in Ubuntu: New Status in gtk+3.0 package in Ubuntu: New Status in mate-terminal package in Ubuntu: New Bug description: 1) $ lsb_release -rd Description: Ubuntu Zesty Zapus (development branch) Release: 17.04 Installed as Ubuntu-MATE 17.04 "Zesty Zapus" - Alpha amd64 2) $ apt-cache policy mate-terminal mate-terminal: Installed: 1.17.0-0ubuntu1 Candidate: 1.17.0-0ubuntu1 3) Open mate-terminal Select "Edit" -> "Keyboard Shortcuts" Select "Help"->"Contents", click on default shortcut key "F1" to change Try to set it to various key sequences. Sometimes bug is triggered by pressing "Fn" key with some of Alt/Ctrl/Shift, sometimes by selecting Ctrl-Shift-W / Crtl-Shift-Alt-W Expected: changed keyboard shortcut for "Help"->"Contents" 4) Abort and closed mate-terminal ProblemType: Crash DistroRelease: Ubuntu 17.04 Package: mate-terminal 1.17.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-8.10-generic 4.10.0-rc8 Uname: Linux 4.10.0-8-generic x86_64 ApportVersion: 2.20.4-0ubuntu2 Architecture: amd64 CurrentDesktop: MATE Date: Thu Feb 23 09:33:19 2017 ExecutablePath: /usr/bin/mate-terminal ExecutableTimestamp: 1484233434 InstallationDate: Installed on 2017-02-22 (1 days ago) InstallationMedia: Ubuntu-MATE 17.04 "Zesty Zapus" - Alpha amd64 (20170125) ProcCmdline: mate-terminal ProcCwd: /home/user SegvAnalysis: Segfault happened at: 0x7f883e41c321 <g_type_check_instance_is_a+65>: testb $0x4,0x16(%rax) PC (0x7f883e41c321) ok source "$0x4" ok destination "0x16(%rax)" (0x70000001e) not located in a known VMA region (needed writable region)! SegvReason: writing unknown VMA Signal: 11 SourcePackage: mate-terminal StacktraceTop: g_type_check_instance_is_a () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 gtk_widget_get_toplevel () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 gtk_window_group_add_window () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 gtk_window_set_transient_for () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 Title: mate-terminal crashed with SIGSEGV in g_type_check_instance_is_a() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1667227/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp