From 3e18447c6445f4d5e35f706f086872a21f46e9f4 Mon Sep 17 00:00:00 2001
From: Michiharu Ariza <ariza@adobe.com>
Date: Thu, 28 Mar 2019 15:07:49 -0700
Subject: [PATCH] fixed a fuzzer bug

---
 src/hb-ot-var-hvar-table.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/hb-ot-var-hvar-table.hh b/src/hb-ot-var-hvar-table.hh
index 698db9ea5..f83712702 100644
--- a/src/hb-ot-var-hvar-table.hh
+++ b/src/hb-ot-var-hvar-table.hh
@@ -182,6 +182,7 @@ struct index_map_subset_plan_t
       last_gid = gid;
     }
 
+    if (last_gid == (hb_codepoint_t)-1) return;
     map_count = last_gid;
     for (gid = 0; gid < map_count; gid++)
     {