From df077fadd7828b609bdfe4dbcad52ef2448525c7 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Thu, 12 May 2011 01:19:39 -0400
Subject: [PATCH] [object] Make object inert during destruction

Such that user_data and other finalizers cannot resurrect object
---
 src/hb-object-private.hh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hb-object-private.hh b/src/hb-object-private.hh
index 08f4bb13f..90f227c55 100644
--- a/src/hb-object-private.hh
+++ b/src/hb-object-private.hh
@@ -170,6 +170,8 @@ struct _hb_object_header_t {
     if (ref_count.dec () != 1)
       return false;
 
+    ref_count.init (HB_REFERENCE_COUNT_INVALID_VALUE);
+
     user_data.finish ();
 
     return true;