From 3e2735f4680b9f46548e7d039b0241cd24aee162 Mon Sep 17 00:00:00 2001
From: Edward Hervey <bilboed@bilboed.com>
Date: Mon, 23 Jun 2014 11:39:04 +0200
Subject: [PATCH] gtype: Fast-path for g_type_is_a

Do I really need to explain why ?

https://bugzilla.gnome.org/show_bug.cgi?id=732085
---
 gobject/gtype.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gobject/gtype.c b/gobject/gtype.c
index f766ffdb9..dff5b4ac6 100644
--- a/gobject/gtype.c
+++ b/gobject/gtype.c
@@ -3499,6 +3499,9 @@ g_type_is_a (GType type,
 {
   TypeNode *node, *iface_node;
   gboolean is_a;
+
+  if (type == iface_type)
+    return TRUE;
   
   node = lookup_type_node_I (type);
   iface_node = lookup_type_node_I (iface_type);