From f8fa2b5cf67b02d74514dec7885d03de73ec7349 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Mon, 3 Sep 2012 20:19:46 -0400
Subject: [PATCH] Fix possible NULL dereference

As reported by Kenichi Ishibashi.
---
 src/hb-ot-layout-gsubgpos-private.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hb-ot-layout-gsubgpos-private.hh b/src/hb-ot-layout-gsubgpos-private.hh
index 00bc563af..40d5c57f3 100644
--- a/src/hb-ot-layout-gsubgpos-private.hh
+++ b/src/hb-ot-layout-gsubgpos-private.hh
@@ -92,7 +92,7 @@ struct hb_would_apply_context_t
 			      glyphs (glyphs_),
 			      len (len_),
 			      zero_context (zero_context_),
-			      digest (*digest_),
+			      digest (digest_ ? *digest_ : hb_set_digest_t()),
 			      debug_depth (0) {};
 };