GtkScrollbar stopped paying attention to grab_notify signals in upstream
commit 26dff0d7830b45b61fb424e4a5c1f98c4091 somewhere in 3.13.x.
You can see it online at
https://github.com/GNOME/gtk/commit/26dff0d7830b45b61fb424e4a5c1f98c4091
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Here's what causes the crash:
- overlay-scrollbar's gtk_module_init() does this:
widget_class = g_type_class_ref (GTK_TYPE_SCROLLBAR)
pre_hijacked_scrollbar_grab_notify = widget_class->grab_notify;
In GTK+ 3.14 widget_class->grab_notify for GTK_TYPE_SCROLLBAR is NULL.
- overl
This patch fixes the crash: https://gist.github.com/84d1545df63a4e0ad981
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https://bugs.launchpad.net/bugs/1386255
Title:
devhelp
Details about my GDB session:
- gdb gnome-calculator (easy to trigger the bug: click on the titlebar
dropdown; bonus: doesn't hold a keyboard/mouse grab when it gets frozen by gdb)
- 'run'
- click on the titlebar dropdown, see the window freeze
- gdb shows a segfault at 0x0
- 'bt' shows the stack
For the record, I had overlay scrollbars disabled ('gsettings set
com.canonical.desktop.interface scrollbar-mode normal') when I saw these
segfaults.
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