Bug 675984 – spurious 'cursor-changed' event emitted during destruction?

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Bug 675984 - spurious 'cursor-changed' event emitted during destruction?


Summary:	spurious 'cursor-changed' event emitted during destruction?


Status:	RESOLVED DUPLICATE of bug 671939

Product:	gtk+
Classification:	Platform
Component:	Widget: GtkTreeView
Version:	unspecified
Hardware:	Other Linux

Importance:	Normal normal
Target Milestone:	---
Assigned To:	gtktreeview-bugs
QA Contact:	gtktreeview-bugs

URL:
Whiteboard:

Depends on:
Blocks:

Reported:	2012-05-13 21:12 UTC by Christophe Fergeau
Modified:	2012-05-16 21:50 UTC

See Also:
GNOME target:	---
GNOME version:	---

Attachments
Modified test case from http://zetcode.com/tutorials/gtktutorial/gtktreeview/ - asserts when closing the main window (2.71 KB, text/x-csrc) 2012-05-13 21:12 UTC, Christophe Fergeau	Details

Description Christophe Fergeau 2012-05-13 21:12:37 UTC

Created attachment 213965 [details]
Modified test case from http://zetcode.com/tutorials/gtktutorial/gtktreeview/ - asserts when closing the main window

sound-juicer has a callback attached on the 'cursor-changed' signal of its main treeview. When exiting the application, the GtkTreeView is destroyed, and during the destruction a 'cursor-changed' is emitted. When it's emitted, calling gtk_tree_view_get_selection returns NULL, which is unexpected, and causes a runtime warning since sound-juicer doesn't check for it.

I think either this signal should not be emitted, or the selection object should not be NULL at this point. 

(gdb) bt

+ Trace 230218

#0 g_log
at gmessages.c line 788
#1 g_return_if_fail_warning
#2 gtk_tree_selection_get_selected
at gtktreeselection.c line 494
#3 on_tracklist_row_selected
at sj-play.c line 567
#4 g_closure_invoke
at gclosure.c line 777
#5 signal_emit_unlocked_R
at gsignal.c line 3547
#6 g_signal_emit_valist
at gsignal.c line 3296
#7 g_signal_emit
at gsignal.c line 3352
#8 gtk_tree_view_real_set_cursor
at gtktreeview.c line 13298
#9 gtk_tree_view_set_model
at gtktreeview.c line 11514
#10 gtk_tree_view_destroy
at gtktreeview.c line 2099
#11 g_closure_invoke
at gclosure.c line 777
#12 signal_emit_unlocked_R
at gsignal.c line 3663
#13 g_signal_emit_valist
at gsignal.c line 3296
#14 g_signal_emit
at gsignal.c line 3352
#15 gtk_widget_dispose
at gtkwidget.c line 10338
#16 g_object_run_dispose
at gobject.c line 1061
#17 gtk_scrolled_window_forall
at gtkscrolledwindow.c line 1598
#18 gtk_container_destroy
at gtkcontainer.c line 1370
#19 g_closure_invoke
at gclosure.c line 777
#20 signal_emit_unlocked_R
at gsignal.c line 3663
#21 g_signal_emit_valist
at gsignal.c line 3296
#22 g_signal_emit
at gsignal.c line 3352
#23 gtk_widget_dispose
at gtkwidget.c line 10338
#24 g_object_run_dispose
at gobject.c line 1061
#25 gtk_box_forall
at gtkbox.c line 1856
#26 gtk_container_destroy
at gtkcontainer.c line 1370
#27 g_closure_invoke
at gclosure.c line 777
#28 signal_emit_unlocked_R
at gsignal.c line 3663
#29 g_signal_emit_valist
at gsignal.c line 3296
#30 g_signal_emit
at gsignal.c line 3352
#31 gtk_widget_dispose
at gtkwidget.c line 10338
#32 g_object_run_dispose
at gobject.c line 1061
#33 gtk_box_forall
at gtkbox.c line 1856
#34 gtk_container_destroy
at gtkcontainer.c line 1370
#35 g_closure_invoke
at gclosure.c line 777
#36 signal_emit_unlocked_R
at gsignal.c line 3663
#37 g_signal_emit_valist
at gsignal.c line 3296
#38 g_signal_emit
at gsignal.c line 3352
#39 gtk_widget_dispose
at gtkwidget.c line 10338
#40 g_object_run_dispose
at gobject.c line 1061
#41 gtk_container_destroy
at gtkcontainer.c line 1370
#42 g_closure_invoke
at gclosure.c line 777
#43 signal_emit_unlocked_R
at gsignal.c line 3663
#44 g_signal_emit_valist
at gsignal.c line 3296
#45 g_signal_emit
at gsignal.c line 3352
#46 gtk_widget_dispose
at gtkwidget.c line 10338
#47 g_object_run_dispose
at gobject.c line 1061
#48 gtk_widget_destroy
at gtkwidget.c line 3943
#49 gtk_main_do_event
at gtkmain.c line 1612
#50 gdk_event_source_dispatch
at gdkeventsource.c line 358
#51 g_main_dispatch
at gmain.c line 2515
#52 g_main_context_dispatch
at gmain.c line 3052
#53 g_main_context_iterate
at gmain.c line 3123
#54 g_main_loop_run
at gmain.c line 3317
#55 gtk_main
at gtkmain.c line 1161
#56 main
at sj-main.c line 1939

Comment 1 Christophe Fergeau 2012-05-13 21:13:56 UTC

This is reproduceable in a recent git master build (from last week)

Comment 2 Matthias Clasen 2012-05-16 21:50:57 UTC


*** This bug has been marked as a duplicate of bug 671939 ***