- Fix for bug #2356

  make the error message a warning and proceed with flattening.
- add testsuite/flattening/modelica/others/ExternalObjectVariable.mo to test this.

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@17300 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Compiler/FrontEnd/Static.mo

@@ -9560,7 +9560,7 @@ algorithm
         false = Types.isParameterOrConstant(const);
         str = ExpressionDump.printExpStr(inExp);
         Error.addSourceMessage(Error.EVAL_EXTERNAL_OBJECT_CONSTRUCTOR, {str}, info);
-      then fail();
+      then (inCache,inExp);
   end matchcontinue;
 end evalExternalObjectInput;
 

Compiler/Util/Error.mo

@@ -662,7 +662,7 @@ public constant Message RECURSION_DEPTH_WARNING = MESSAGE(532, TRANSLATION(), ER
   Util.gettext("The maximum recursion depth was reached when evaluating expression %s in scope %s. Translation may still succeed but you are recommended to fix the problem."));
 public constant Message RECURSION_DEPTH_DERIVED = MESSAGE(533, TRANSLATION(), ERROR(),
   Util.gettext("The maximum recursion depth was reached when instantiating a derived class. Current class %s in scope %s."));
-public constant Message EVAL_EXTERNAL_OBJECT_CONSTRUCTOR = MESSAGE(534, TRANSLATION(), ERROR(),
+public constant Message EVAL_EXTERNAL_OBJECT_CONSTRUCTOR = MESSAGE(534, TRANSLATION(), WARNING(),
   Util.gettext("OpenModelica requires that all external objects input arguments are possible to evaluate before initialization in order to avoid odd run-time failures, but %s is a variable."));
 public constant Message CLASS_ANNOTATION_DOES_NOT_EXIST = MESSAGE(535, SCRIPTING(), ERROR(),
   Util.gettext("Could not find class annotation %s in class %s."));