From 8ef80886866a36d257566b8185b071414bd68501 Mon Sep 17 00:00:00 2001
From: Zyrin <alexis.ts@gmx.de>
Date: Wed, 21 Aug 2019 10:57:03 +0200
Subject: [PATCH 1/2] Fix stack overflow on gcc with c++17  (#15343)

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

diff --git a/modules/core/include/opencv2/core/mat.inl.hpp b/modules/core/include/opencv2/core/mat.inl.hpp
index a2e7923b39..d74b6e67b2 100644
--- a/modules/core/include/opencv2/core/mat.inl.hpp
+++ b/modules/core/include/opencv2/core/mat.inl.hpp
@@ -1809,7 +1809,7 @@ Mat_<_Tp> Mat_<_Tp>::cross(const Mat_& m) const
 template<typename _Tp> template<typename T2> inline
 Mat_<_Tp>::operator Mat_<T2>() const
 {
-    return Mat_<T2>(*this);
+    return Mat_<T2>(static_cast<const Mat&>(*this));
 }
 
 template<typename _Tp> inline

From 869ea22f34407998256d9a4a570e30e3ba48feb8 Mon Sep 17 00:00:00 2001
From: Zyrin <alexis.ts@gmx.de>
Date: Wed, 21 Aug 2019 11:12:00 +0200
Subject: [PATCH 2/2] Use std::move in Mat_<T> move constructors

---
 modules/core/include/opencv2/core/mat.inl.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules/core/include/opencv2/core/mat.inl.hpp b/modules/core/include/opencv2/core/mat.inl.hpp
index d74b6e67b2..bfa28a1cdf 100644
--- a/modules/core/include/opencv2/core/mat.inl.hpp
+++ b/modules/core/include/opencv2/core/mat.inl.hpp
@@ -2103,7 +2103,7 @@ void Mat_<_Tp>::forEach(const Functor& operation) const {
 
 template<typename _Tp> inline
 Mat_<_Tp>::Mat_(Mat_&& m)
-    : Mat(m)
+    : Mat(std::move(m))
 {
 }
 
@@ -2119,7 +2119,7 @@ Mat_<_Tp>::Mat_(Mat&& m)
     : Mat()
 {
     flags = (flags & ~CV_MAT_TYPE_MASK) | traits::Type<_Tp>::value;
-    *this = m;
+    *this = std::move(m);
 }
 
 template<typename _Tp> inline