From 9326912941e5927bcfb4689689c954b9a3995baa Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Sun, 25 Nov 2018 00:27:23 -0500
Subject: [PATCH] [kerx] Fix crash

---
 src/hb-machinery.hh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hb-machinery.hh b/src/hb-machinery.hh
index 3717c4d..537275d 100644
--- a/src/hb-machinery.hh
+++ b/src/hb-machinery.hh
@@ -264,6 +264,8 @@ struct hb_sanitize_context_t :
   {
     reset_object ();
 
+    if (!obj) return;
+
     const char *obj_start = (const char *) obj;
     const char *obj_end = (const char *) obj + obj->get_size ();
     assert (obj_start <= obj_end); /* Must not overflow. */
-- 
2.7.4