From e5328855987294b4d79aafddcd146af9d414e14c Mon Sep 17 00:00:00 2001
From: Sebastian Messmer <messmer@cryfs.org>
Date: Sat, 13 Feb 2016 20:59:51 +0100
Subject: [PATCH] Fix crash on Mac OS X when parsing the command line
 parameters

---
 src/cryfs/cli/program_options/utils.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/cryfs/cli/program_options/utils.cpp b/src/cryfs/cli/program_options/utils.cpp
index 2c2f0d2d..4ea052f9 100644
--- a/src/cryfs/cli/program_options/utils.cpp
+++ b/src/cryfs/cli/program_options/utils.cpp
@@ -15,7 +15,9 @@ namespace cryfs {
             vector<char*> afterDoubleDash;
             afterDoubleDash.reserve(options.size()-beforeDoubleDash.size()+1);
             afterDoubleDash.push_back(options[0]);
-            std::copy(doubleDashIterator+1, options.end(), std::back_inserter(afterDoubleDash));
+            if (options.end() >= doubleDashIterator+1) {
+                std::copy(doubleDashIterator + 1, options.end(), std::back_inserter(afterDoubleDash));
+            }
             return make_pair(
                     beforeDoubleDash,
                     afterDoubleDash