Check that the independent variable isn't in parameters

Author: lamorton

src/systems/diffeqs/odesystem.jl

@@ -76,10 +76,15 @@ struct ODESystem <: AbstractODESystem
 
     function ODESystem(deqs, iv, dvs, ps, observed, tgrad, jac, Wfact, Wfact_t, name, systems, defaults, structure, connection_type)
         check_dependence(dvs,iv)
+        check_parameters(ps,iv)
         new(deqs, iv, dvs, ps, observed, tgrad, jac, Wfact, Wfact_t, name, systems, defaults, structure, connection_type)
     end
 end
-
+function check_parameters(ps,iv)
+    for p in ps
+        isequal(iv,p) && throw(ArgumentError("Independent variable $iv not allowed in parameters."))
+    end
+end
 function check_dependence(dvs,iv)
     for dv in dvs
         isequal(iv, iv_from_nested_derivative(dv)) || throw(ArgumentError("Variable $dv is not a function of independent variable $iv."))