From 9e401f6890f2bea1d11914bca436c2230f8d0f1b Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 20 Mar 2015 16:08:38 -0400
Subject: [PATCH] Fix reverse_range() for empty range

Fixes coretext notdef loop consisting of all default_ignorable glyphs

https://code.google.com/p/chromium/issues/detail?id=464755
---
 src/hb-buffer.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hb-buffer.cc b/src/hb-buffer.cc
index 942177cbd..b9fe263ce 100644
--- a/src/hb-buffer.cc
+++ b/src/hb-buffer.cc
@@ -443,7 +443,7 @@ hb_buffer_t::reverse_range (unsigned int start,
 {
   unsigned int i, j;
 
-  if (start == end - 1)
+  if (end - start < 2)
     return;
 
   for (i = start, j = end - 1; i < j; i++, j--) {