id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
5739	Invalid models without parameter binding equations are compiled by OMC	Francesco Casella	Per Östlund	"Consider the following test models
{{{
model UnboundParameter
  parameter Real p;
end UnboundParameter;

model UnboundEvaluatedParameter
  parameter Real p annotation(Evaluate = true);
end UnboundEvaluatedParameter;
}}}

As far as I understand, according to the Modelica specification those two models cannot be simulated, because they lack a binding equation  for the parameter {{{p}}}, and there is no default value given by an explicit start modifier (see [https://specification.modelica.org/v3.4/Ch8.html#initialization-initial-equation-and-initial-algorithm Modelica Specification 8.6]).

Unfortunately, OMC compiles and run both models with a default value of zero for parameter {{{p}}}.

I'm not 100% sure if this is a frontend or backend issue."	defect	closed	critical	1.16.0	New Instantiation		duplicate		Karim Adbdelhak Andreas Heuermann