From a90a576d76faff2ab8b14186737edd7fc12f076f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9F=D1=80=D1=83=D0=BD=20=D0=92=D0=B8=D0=BA=D1=82=D0=BE?=
 =?UTF-8?q?=D1=80?= <v_prun@TECH>
Date: Mon, 14 Mar 2016 16:10:23 +0300
Subject: [PATCH] fixed incorrect behaviour of move semantics for cv::Ptr,
 cv::Mat, cv::UMat in case when rvalue-reference references to *this.

---
 modules/core/include/opencv2/core/mat.inl.hpp | 5 +++++
 modules/core/include/opencv2/core/ptr.inl.hpp | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/modules/core/include/opencv2/core/mat.inl.hpp b/modules/core/include/opencv2/core/mat.inl.hpp
index 1fb32b3d2c..40453b8e0a 100644
--- a/modules/core/include/opencv2/core/mat.inl.hpp
+++ b/modules/core/include/opencv2/core/mat.inl.hpp
@@ -1165,6 +1165,9 @@ Mat::Mat(Mat&& m)
 inline
 Mat& Mat::operator = (Mat&& m)
 {
+    if (this == &m)
+      return *this;
+
     release();
     flags = m.flags; dims = m.dims; rows = m.rows; cols = m.cols; data = m.data;
     datastart = m.datastart; dataend = m.dataend; datalimit = m.datalimit; allocator = m.allocator;
@@ -3599,6 +3602,8 @@ UMat::UMat(UMat&& m)
 inline
 UMat& UMat::operator = (UMat&& m)
 {
+    if (this == &m)
+      return *this;
     release();
     flags = m.flags; dims = m.dims; rows = m.rows; cols = m.cols;
     allocator = m.allocator; usageFlags = m.usageFlags;
diff --git a/modules/core/include/opencv2/core/ptr.inl.hpp b/modules/core/include/opencv2/core/ptr.inl.hpp
index 3f6f214a8f..d33aca988b 100644
--- a/modules/core/include/opencv2/core/ptr.inl.hpp
+++ b/modules/core/include/opencv2/core/ptr.inl.hpp
@@ -264,6 +264,9 @@ Ptr<T>::Ptr(Ptr&& o) : owner(o.owner), stored(o.stored)
 template<typename T>
 Ptr<T>& Ptr<T>::operator = (Ptr<T>&& o)
 {
+    if (this == &o)
+        return *this;
+
     release();
     owner = o.owner;
     stored = o.stored;