Illegal nested when-statements and when-equations are not detected.

[Peter Aronsson]

Both nested when-statements and when-equations are illegal in Modelica. But the compiler does not complain when it encounters them.

Example
{{{ model Model1

Integer x;
Integer y;
algorithm
when sample(0, 1) then

if time > 1 then

x:=1;

end if;

when x > 0 then
y:=3;
end when;

end when;
end Model1;

}}}

Example provided by Wladimir Schamai (EADS)

[Per Östlund]

Fixed in revision 5334.

[dhedberg]

The checks seem not be exhaustive as the model below results in no warnings (instantiation succeeds). Opening issue again.

model ErrorNestedWhen
  Real x,y1,y2;
equation 
  when x > 2 then
    when y1 > 3 then
      y2=sin(x);
    end when;
  end when;
end ErrorNestedWhen;

[Per Östlund]

Fixed in revision 6285, see test case mofiles/WhenNestedEquation.