From fc22007559eeafd991d453698586b52fd02f380f Mon Sep 17 00:00:00 2001
From: Benjamin Otte <otte@redhat.com>
Date: Tue, 17 Mar 2015 16:45:05 +0100
Subject: [PATCH] notebook: Protect against invalid allocations

A widget can be mapped but not have a size allocated yet. In that case
avoid computing a broken rectangle.

https://bugzilla.gnome.org/show_bug.cgi?id=746301
---
 gtk/gtknotebook.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index eff972d963..dfe1b38570 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -4793,6 +4793,8 @@ gtk_notebook_redraw_tabs (GtkNotebook *notebook)
   redraw_rect.y = border;
 
   gtk_widget_get_allocation (widget, &allocation);
+  if (allocation.width <= 1)
+    return;
 
   get_padding_and_border (notebook, &padding);