From 46775ad18632fa5bf3ce8fc37dca8df935c439f3 Mon Sep 17 00:00:00 2001
From: Camille <camille@camille-VGN-NW21MF-W.(none)>
Date: Thu, 17 Jul 2014 22:57:31 +0200
Subject: [PATCH] bug fix 3381

---
 modules/core/include/opencv2/core/mat.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/core/include/opencv2/core/mat.hpp b/modules/core/include/opencv2/core/mat.hpp
index 5816c1f80..8e36a44db 100644
--- a/modules/core/include/opencv2/core/mat.hpp
+++ b/modules/core/include/opencv2/core/mat.hpp
@@ -684,6 +684,8 @@ template<typename _Tp> inline void Mat::push_back(const _Tp& elem)
 {
     if( !data )
     {
+    	CV_Assert((type()==0) || (DataType<_Tp>::type == type()));
+
         *this = Mat(1, 1, DataType<_Tp>::type, (void*)&elem).clone();
         return;
     }