From e464acff7ab83b29291992cca1e3043b8c65823e Mon Sep 17 00:00:00 2001
From: Robert Bragg <robert@linux.intel.com>
Date: Sat, 4 Apr 2009 19:02:01 +0100
Subject: [PATCH] [cogl] cogl_is_*(): Don't dereference an invalid handle; just
 return FALSE

An invalid handle is implicitly not of any type.
---
 clutter/cogl/common/cogl-handle.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/clutter/cogl/common/cogl-handle.h b/clutter/cogl/common/cogl-handle.h
index 55e8ecd26..242b187f5 100644
--- a/clutter/cogl/common/cogl-handle.h
+++ b/clutter/cogl/common/cogl-handle.h
@@ -125,6 +125,9 @@ typedef struct _CoglHandleObject
   {                                                             \
     CoglHandleObject *obj = (CoglHandleObject *)handle;         \
                                                                 \
+    if (handle == COGL_INVALID_HANDLE)                          \
+      return FALSE;                                             \
+                                                                \
     return (obj->klass->type ==                                 \
             _cogl_##type_name##_get_type ());                   \
   }								\