Default arguments in functions can be incorrectly scoped

[Per Östlund]

Default arguments in functions are sometimes evaluated in the wrong scope, e.g.:

package P
  function f
    input Real x;
    output Real y;
  algorithm
    y := 2 * x;
  end f;

  constant Real p = 1.0;
  function g = f(x = p);
end P;

model M
  Real p = 2.0;
  Real x = P.g();
end M;

In this model the default argument p of g.x is evaluated in the scope where the call is done, i.e. M, which results in x = 2.0 instead of the expected x = 1.0.

Another example:

function f
  input Real x;
  input Real r;
  output Real o := x+r;
end f;

model M
  Real x = 2.0;
  function g = f(r=x);
  Real y = g(1.0);
end M;

In this model the reverse happens, the default argument x of f.x is evaluated by using the value of x in f, not of x in M. So the result becomes y = 2.0 instead of the expected y = 3.0.

[Per Östlund]

The first model already worked in the new frontend, the second is fixed in 517b9a7b.