From 48a5599c5ec0970cfaa5d28efe449ff28b182fda Mon Sep 17 00:00:00 2001
From: Vadim Pisarevsky <no@email>
Date: Fri, 17 Jun 2011 16:14:47 +0000
Subject: [PATCH] fixed potentially incorrect memory access in cv::transform

---
 modules/core/src/matmul.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/modules/core/src/matmul.cpp b/modules/core/src/matmul.cpp
index a1f89eb..28767bf 100644
--- a/modules/core/src/matmul.cpp
+++ b/modules/core/src/matmul.cpp
@@ -1743,12 +1743,13 @@ void cv::transform( InputArray _src, OutputArray _dst, InputArray _mtx )
 
     int mtype = depth == CV_32S || depth == CV_64F ? CV_64F : CV_32F;
     AutoBuffer<double> _mbuf;
-    double* mbuf = _mbuf;
+    double* mbuf;
 
     if( !m.isContinuous() || m.type() != mtype || m.cols != scn + 1 )
     {
         _mbuf.allocate(dcn*(scn+1));
-        Mat tmp(dcn, scn+1, mtype, (double*)_mbuf);
+        mbuf = (double*)_mbuf;
+        Mat tmp(dcn, scn+1, mtype, mbuf);
         memset(tmp.data, 0, tmp.total()*tmp.elemSize());
         if( m.cols == scn+1 )
             m.convertTo(tmp, mtype);
-- 
2.7.4