id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
2349	Type coercion gives (ignored) duplicated modification error	Henrik Tidefelt	somebody	"The following model is inspired by a problem with  the MSL example `Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMS_Start`:
{{{
package DuplicateModification2
  record A ""Compare Modelica.Electrical.Machines.Losses.CoreParameters""
    parameter Real y ""VRef"";
  end A;
  model B1 ""Compare Modelica.Electrical.Machines.Utilities.ParameterRecords.AIM_SlipRingData""
    parameter A a(y = 0) ""rotorCoreParameters"";
  end B1;
  model B2 ""Compare Modelica.Electrical.Machines.BasicMachines.AsynchronousInductionMachines.AIM_SlipRing""
    parameter A a(y = 0) ""rotorCoreParameters"";
  end B2;
  model C ""Compare Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMS_Start""
    B2 b(a = b0.a) ""aims"";
    parameter B1 b0 ""aimsData"";
  end C;
end DuplicateModification2;
}}}

Checking the model both gives an error and succeeds at the same time:
  Check of DuplicateModification2.C completed successfully.

  [C:/Documents and Settings/henrikt/My Documents/Models/Bugs/DuplicateModification2.mo:9:5-9:47:writable] Error: Variable b.a: Flera modifikationer av element  = (typed)0 DAE.PROP(Integer, C_CONST), value: 0 and  = (typed)0.0 DAE.PROP(Real, C_CONST), value: 0.0 i komponent y.

  Class DuplicateModification2.C has 0 equation(s) and 0 variable(s).
  0 of these are trivial equation(s).

The error goes away if `0.0` is used instead of `0` in the parameter modification inside class `B2`. It also goes away if the class restriction for `A` is changed from `record` to `model`."	defect	closed	normal	1.9.4	Frontend	trunk	fixed