From 48146e5612f6d272d6962f6829c6d64a31edef89 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Mon, 10 May 2010 20:07:56 -0400
Subject: [PATCH] Don't fail sanitize on NULL data

---
 src/hb-open-type-private.hh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/hb-open-type-private.hh b/src/hb-open-type-private.hh
index 3f05bf7..c7b087e 100644
--- a/src/hb-open-type-private.hh
+++ b/src/hb-open-type-private.hh
@@ -290,6 +290,11 @@ struct Sanitizer
 
     context->init (blob);
 
+    if (unlikely (!context->start)) {
+      context->finish ();
+      return blob;
+    }
+
     Type *t = CastP<Type> (const_cast<char *> (context->start));
 
     sane = t->sanitize (context);
-- 
2.7.4