From: Behdad Esfahbod <behdad@behdad.org>
Date: Mon, 10 Sep 2018 13:45:32 +0000 (+0200)
Subject: Fix sanitize or Context Rule
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5dfd6e07626a9022a995eb7fa16767eff66c6047;p=platform%2Fupstream%2FlibHarfBuzzSharp.git

Fix sanitize or Context Rule

Fixes https://github.com/harfbuzz/harfbuzz/issues/1110
---

diff --git a/src/hb-ot-layout-gsubgpos.hh b/src/hb-ot-layout-gsubgpos.hh
index 315951a..bd4611d 100644
--- a/src/hb-ot-layout-gsubgpos.hh
+++ b/src/hb-ot-layout-gsubgpos.hh
@@ -1267,7 +1267,7 @@ struct Rule
     return_trace (inputCount.sanitize (c) &&
 		  lookupCount.sanitize (c) &&
 		  c->check_range (inputZ,
-				  inputZ[0].static_size * inputCount +
+				  inputZ[0].static_size * (inputCount ? inputCount - 1 : 0) +
 				  LookupRecord::static_size * lookupCount));
   }