[NF] Fix undefined behaviour due to #4502.

Belonging to [master]: - OpenModelica/OMCompiler#2072
OpenModelica · Dec 11, 2017 · dad39fb · dad39fb
1 parent eeb9148
commit dad39fb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Compiler/NFFrontEnd/NFInst.mo b/Compiler/NFFrontEnd/NFInst.mo
@@ -1251,11 +1251,13 @@ function updateComponentVariability
   input output Component.Attributes attr;
   input Class cls;
   input InstNode clsNode;
+protected
+  Variability var = attr.variability;
 algorithm
   if referenceEq(attr, NFComponent.DEFAULT_ATTR) and
      Type.isDiscrete(Class.getType(cls, clsNode)) then
     attr := NFComponent.DISCRETE_ATTR;
-  elseif attr.variability == Variability.CONTINUOUS and
+  elseif var == Variability.CONTINUOUS and
      Type.isDiscrete(Class.getType(cls, clsNode)) then
     attr.variability := Variability.DISCRETE;
   end if;