From 153a7e71ceaea8684ea6330faed70f743c3dde8c Mon Sep 17 00:00:00 2001
From: Benjamin Otte <otte@redhat.com>
Date: Tue, 22 Jul 2014 01:06:32 +0200
Subject: [PATCH] stylecontext: Don't do anything with empty widget path

It's a corner case, but empty widget paths don't allow setting
state/regions/classes, so exit early

Fixes gtk/stylecontext test.
---
 gtk/gtkstylecontext.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index cc04eea70f..8146819ba0 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -718,11 +718,14 @@ create_query_path (GtkStyleContext *context,
 {
   GtkStyleContextPrivate *priv;
   GtkWidgetPath *path;
-  guint i, pos;
+  guint i, pos, length;
 
   priv = context->priv;
   path = priv->widget ? _gtk_widget_create_path (priv->widget) : gtk_widget_path_copy (priv->widget_path);
-  pos = gtk_widget_path_length (path) - 1;
+  length = gtk_widget_path_length (path);
+  if (length == 0)
+    return path;
+  pos = length - 1;
 
   /* Set widget regions */
   for (i = 0; i < info->regions->len; i++)