From 6e1c3eaf7005d06c89f0807f693aadd835aa0468 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Mon, 28 Jan 2019 14:12:41 -0500
Subject: [PATCH] Fix sign comparison error

---
 src/hb-open-file.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/hb-open-file.hh b/src/hb-open-file.hh
index de22ed55d..32a223cdf 100644
--- a/src/hb-open-file.hh
+++ b/src/hb-open-file.hh
@@ -154,7 +154,8 @@ typedef struct OffsetTable
       c->align (4);
       const char *end = (const char *) c->head;
 
-      if (items[i].tag == HB_OT_TAG_head && end - start >= head::static_size)
+      if (items[i].tag == HB_OT_TAG_head &&
+	  (unsigned) (end - start) >= head::static_size)
       {
 	head *h = (head *) start;
 	checksum_adjustment = &h->checkSumAdjustment;