Version-Release number of selected component:
runlevel: 1 5
Thread no. 1 (10 frames)
#0 gtk_widget_size_allocate_with_baseline at /lib64/libgtk-3.so.0
#1 gtk_combo_box_size_allocate at /lib64/libgtk-3.so.0
#2 g_cclosure_marshal_VOID__BOXEDv at /lib64/libgobject-2.0.so.0
#3 _g_closure_invoke_va at /lib64/libgobject-2.0.so.0
#6 gtk_widget_size_allocate_with_baseline at /lib64/libgtk-3.so.0
#7 gtk_box_size_allocate_no_center at /lib64/libgtk-3.so.0
#8 g_cclosure_marshal_VOID__BOXEDv at /lib64/libgobject-2.0.so.0
#9 _g_closure_invoke_va at /lib64/libgobject-2.0.so.0
#12 gtk_widget_size_allocate_with_baseline at /lib64/libgtk-3.so.0
#13 gtk_box_size_allocate_no_center at /lib64/libgtk-3.so.0
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Happens at each startup for me: Empathy is completely unusable.
I believe this should be raised in severity.
Looks like EmpathyPresenceChooser has no button nor child widget set:
(gdb) f 2
#2 0x0000003faad431ca in gtk_combo_box_size_allocate (widget=0xa6a360 [EmpathyPresenceChooser], allocation=0x7fffffffc760) at gtkcombobox.c:2701
2696 /* menu mode; child_widget has been set with gtk_container_add().
2697 * E.g. it might be a GtkEntry if priv->has_entry is TRUE.
2698 * Allocate the button at the far end, according to the direction
2699 * of the widget.
(gdb) p priv->button
$13 = 0x0
(gdb) p gtk_bin_get_child (widget)
$7 = 0x0
But the button is created in gtk_combo_box_menu_setup, so I put a breakpoint there... which is never hit before the SIGSEGV. Therefore, I tried directly breaking in gtk_combo_box_check_appearance, which is called inside the GtkComboBox constructor... and nothing.
Therefore, I am wondering under which circumstances EmpathyPresenceChooser does not invoke its parent GtkComboBox constructor before triggering a size allocation.
By the way, shouldn't presence_chooser_constructed chain to the parent constructed member? Should not matter for this specific bug, but looks wrong to me.
I reported the bug upstream. It seems it just rotting here :/
Here  is the scratch build with patch from , which fixes the issue.
Thanks Vít, the build you provided fixes the problem for me!
Same here - the scratch-build fixes the crash for me as well.
Nominating as Fedora 21 Final blocker.
Criteria: "All applications that can be launched using the standard graphical mechanism of a release-blocking desktop after a default installation of that desktop must start successfully and withstand a basic functionality test. "
This crash doesn't seem to happen for me after updating to empathy-3.12.5-1.fc21.x86_64
empathy-3.12.5-1.fc22.x86_64 seems to fix this issue for me as well.