Invalid access of protected elements in SmoothStep example

[maltelenz]

This:

ModelicaStandardLibrary/Modelica/Electrical/Analog/Examples/Lines/SmoothStep.mo

Lines 92 to 97 in a877f52

	oLine1.C.v=zeros(N1);
	oLine1.L.i=zeros(N1 + 1);
	oLine5.C.v=zeros(N5);
	oLine5.L.i=zeros(N5 + 1);
	oLine50.C.v=zeros(N50);
	oLine50.L.i=zeros(N50 + 1);

Accesses these protected elements:

ModelicaStandardLibrary/Modelica/Electrical/Analog/Lines/OLine.mo

Lines 57 to 65 in a877f52

	protected
	Modelica.Electrical.Analog.Basic.Resistor R[N + 1](
	R=rm,
	T_ref=fill(T_ref, N + 1),
	alpha=fill(alpha_R, N + 1),
	useHeatPort=fill(useHeatPort, N + 1),
	T=fill(T, N + 1));
	Modelica.Electrical.Analog.Basic.Inductor L[N + 1](L=lm);
	Modelica.Electrical.Analog.Basic.Capacitor C[N](C=fill(c*length/(N), N));

and is hence illegal, as reported by System Modeler:

Error: Modelica.Electrical.Analog.Examples.Lines.SmoothStep Invalid lookup of protected element. When looking up oLine50.L.i in scope Modelica.Electrical.Analog.Examples.Lines.SmoothStep, L is protected.
Protected elements can only appear as the first part of a component reference or path, and cannot be imported.

Error: Modelica.Electrical.Analog.Examples.Lines.SmoothStep Invalid lookup of protected element. When looking up oLine50.C.v in scope Modelica.Electrical.Analog.Examples.Lines.SmoothStep, C is protected.
Protected elements can only appear as the first part of a component reference or path, and cannot be imported.

Error: Modelica.Electrical.Analog.Examples.Lines.SmoothStep Invalid lookup of protected element. When looking up oLine5.L.i in scope Modelica.Electrical.Analog.Examples.Lines.SmoothStep, L is protected.
Protected elements can only appear as the first part of a component reference or path, and cannot be imported.

Error: Modelica.Electrical.Analog.Examples.Lines.SmoothStep Invalid lookup of protected element. When looking up oLine5.C.v in scope Modelica.Electrical.Analog.Examples.Lines.SmoothStep, C is protected.
Protected elements can only appear as the first part of a component reference or path, and cannot be imported.

Error: Modelica.Electrical.Analog.Examples.Lines.SmoothStep Invalid lookup of protected element. When looking up oLine1.L.i in scope Modelica.Electrical.Analog.Examples.Lines.SmoothStep, L is protected.
Protected elements can only appear as the first part of a component reference or path, and cannot be imported.

Error: Modelica.Electrical.Analog.Examples.Lines.SmoothStep Invalid lookup of protected element. When looking up oLine1.C.v in scope Modelica.Electrical.Analog.Examples.Lines.SmoothStep, C is protected.
Protected elements can only appear as the first part of a component reference or path, and cannot be imported.

[maltelenz]

Same thing here:

ModelicaStandardLibrary/Modelica/Electrical/Analog/Examples/Lines/CompareLineTrunks.mo

Lines 91 to 98 in a877f52

	oLine1.C.v=zeros(segsPerTrunk);
	oLine1.L.i=zeros(segsPerTrunk + 1);
	oLine2.C.v=zeros(segsPerTrunk);
	oLine2.L.i=zeros(segsPerTrunk + 1);
	oLine3.C.v=zeros(segsPerTrunk);
	oLine3.L.i=zeros(segsPerTrunk + 1);
	oLine4.C.v=zeros(segsPerTrunk);
	oLine4.L.i=zeros(segsPerTrunk + 1);

[beutlich]

Broken by 839ab4d for #4306. Not sure if the protected section was modified on purpose or accident. Given the commit message it does not look a necessary change.