From 578a21e1ff46c532a9d0436225583a0b60122b04 Mon Sep 17 00:00:00 2001
From: Petter Strandmark <petter.strandmark@gmail.com>
Date: Mon, 30 Dec 2013 16:41:40 +0100
Subject: [PATCH] Bug fix Function variable overlap check.

---
 source/function.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/function.cpp b/source/function.cpp
index 203d25b..a66b2c1 100644
--- a/source/function.cpp
+++ b/source/function.cpp
@@ -318,7 +318,7 @@ std::pair<typename Map::const_iterator,
 	if (output.first->first >= t) {
 		output.first = map.end();
 	}
-	if (output.second->first <= t) {
+	if (output.second != map.end() && output.second->first <= t) {
 		output.second = map.end();
 	}
 	return output;