From d5d88efd5d03c8257d7b01d6d3222efbdaf803c7 Mon Sep 17 00:00:00 2001
From: Vladislav Vinogradov <vlad.vinogradov@itseez.com>
Date: Wed, 22 Jan 2014 10:40:14 +0400
Subject: [PATCH] fix GpuMat::copyTo method with mask:

fill destination matrix with zeros if it was reallocated(cherry picked from commit dda999545c9dd1cca56081a4b2d56755210b840a)
---
 modules/core/src/gpumat.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/modules/core/src/gpumat.cpp b/modules/core/src/gpumat.cpp
index ec26801ddc..96691919fd 100644
--- a/modules/core/src/gpumat.cpp
+++ b/modules/core/src/gpumat.cpp
@@ -620,11 +620,19 @@ void cv::gpu::GpuMat::copyTo(GpuMat& m) const
 void cv::gpu::GpuMat::copyTo(GpuMat& mat, const GpuMat& mask) const
 {
     if (mask.empty())
+    {
         copyTo(mat);
+    }
     else
     {
+        uchar* data0 = mat.data;
+
         mat.create(size(), type());
 
+        // do not leave dst uninitialized
+        if (mat.data != data0)
+            mat.setTo(Scalar::all(0));
+
         gpuFuncTable()->copyWithMask(*this, mat, mask);
     }
 }