diff -r 68d60e2cfa76 -r 1f5518dd8146 src/list.h
--- a/src/list.h	Thu Jul 24 16:54:45 2014 +0300
+++ b/src/list.h	Thu Jul 24 17:01:23 2014 +0300
@@ -184,8 +184,9 @@
 template<typename T>
 void List<T>::merge (const List<T>& other)
 {
+	int oldsize = size();
 	resize (size() + other.size());
-	std::copy (other.begin(), other.end(), begin() + other.size());
+	std::copy (other.begin(), other.end(), begin() + oldsize);
 }
 
 template<typename T>