From f611102db35ed51cf0a572661b8d69c8bb7da8f6 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Wed, 13 Mar 2019 12:38:46 +0100
Subject: [PATCH] PVS: V794 The assignment operator should be protected from
 the case of 'this == ...'

---
 src/Mod/Path/App/Path.cpp            | 3 +++
 src/Mod/Path/libarea/kurve/kurve.cpp | 5 +++++
 src/Mod/Robot/App/Trajectory.cpp     | 3 +++
 3 files changed, 11 insertions(+)

diff --git a/src/Mod/Path/App/Path.cpp b/src/Mod/Path/App/Path.cpp
index 4e0fb05b8d..7b80f6af51 100644
--- a/src/Mod/Path/App/Path.cpp
+++ b/src/Mod/Path/App/Path.cpp
@@ -65,6 +65,9 @@ Toolpath::~Toolpath()
 
 Toolpath &Toolpath::operator=(const Toolpath& otherPath)
 {
+    if (this == &otherPath)
+        return *this;
+
     clear();
     vpcCommands.resize(otherPath.vpcCommands.size());
     int i = 0;
diff --git a/src/Mod/Path/libarea/kurve/kurve.cpp b/src/Mod/Path/libarea/kurve/kurve.cpp
index 66cb3d413c..fc3f451775 100644
--- a/src/Mod/Path/libarea/kurve/kurve.cpp
+++ b/src/Mod/Path/libarea/kurve/kurve.cpp
@@ -34,6 +34,8 @@ namespace geoff_geometry {
 
 	const SpanVertex& SpanVertex::operator= (const SpanVertex& spv ){
 		/// 
+		if (this == &spv)
+			return *this;
 
 		memcpy(x, spv.x, SPANSTORAGE * sizeof(double));
 		memcpy(y, spv.y, SPANSTORAGE * sizeof(double));
@@ -430,6 +432,9 @@ namespace geoff_geometry {
 	}
 
 	const Kurve& Kurve::operator=( const Kurve &k) {
+		if (this == &k)
+			return *this;
+
 		memcpy(e, k.e, 16 * sizeof(double));
 		m_unit = k.m_unit;
 		m_mirrored = k.m_mirrored;
diff --git a/src/Mod/Robot/App/Trajectory.cpp b/src/Mod/Robot/App/Trajectory.cpp
index 61f4532ca2..c4f04e6a09 100644
--- a/src/Mod/Robot/App/Trajectory.cpp
+++ b/src/Mod/Robot/App/Trajectory.cpp
@@ -81,6 +81,9 @@ Trajectory::~Trajectory()
 
 Trajectory &Trajectory::operator=(const Trajectory& Trac)
 {
+    if (this == &Trac)
+        return *this;
+
     for(std::vector<Waypoint*>::iterator it = vpcWaypoints.begin();it!=vpcWaypoints.end();++it)
         delete ( *it );
     vpcWaypoints.clear();