From 095a69753592934fb2964bbdb6b2c8fe34e14074 Mon Sep 17 00:00:00 2001
From: Paolo Cignoni <cignoni@isti.cnr.it>
Date: Thu, 24 Nov 2016 18:02:07 +0100
Subject: [PATCH] added a check for empty lines in obj (to avoid out of bound
 accesses)

---
 wrap/io_trimesh/import_obj.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/wrap/io_trimesh/import_obj.h b/wrap/io_trimesh/import_obj.h
index 84c06cba..cdedc588 100644
--- a/wrap/io_trimesh/import_obj.h
+++ b/wrap/io_trimesh/import_obj.h
@@ -745,8 +745,8 @@ namespace vcg {
                         std::getline(stream, line);
                         // We have to manage backspace terminated lines, 
                         // joining them together before parsing them
-                        if(line.back()==13) line.pop_back();
-                        while(line.back()=='\\') {
+                        if(!line.empty() && line.back()==13) line.pop_back();
+                        while(!line.empty() && line.back()=='\\') {
                           std::string tmpLine;
                           std::getline(stream, tmpLine);
                           if(tmpLine.back()==13) line.pop_back();