From 22e984b20052abf5730af59e226f06919c3aa73c Mon Sep 17 00:00:00 2001
From: Michael Droettboom <mdboom@gmail.com>
Date: Wed, 15 May 2013 22:50:50 -0400
Subject: [PATCH] Fix #2016: reading memory past the end of a C++ std::vector

---
 ttconv/pprdrv_tt2.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ttconv/pprdrv_tt2.cpp b/ttconv/pprdrv_tt2.cpp
index b3fc4b3ae14a..2643afa09930 100644
--- a/ttconv/pprdrv_tt2.cpp
+++ b/ttconv/pprdrv_tt2.cpp
@@ -700,7 +700,7 @@ void ttfont_add_glyph_dependencies(struct TTFONT *font, std::vector<int>& glyph_
 
                     std::vector<int>::iterator insertion =
                         std::lower_bound(glyph_ids.begin(), glyph_ids.end(), gind);
-                    if (*insertion != gind)
+                    if (insertion == glyph_ids.end() || *insertion != gind)
                     {
                         glyph_ids.insert(insertion, gind);
                         glyph_stack.push(gind);