PVS: V794 The assignment operator should be protected from the case of 'this == ...'

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;

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;

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();