IG: IDEA-129549 (Invalid suggestion to make enum final)

plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/classlayout/ClassWithOnlyPrivateConstructorsInspectionBase.java

@@ -54,6 +54,9 @@ public class ClassWithOnlyPrivateConstructorsInspectionBase extends BaseInspecti
     @Override
     public void visitClass(PsiClass aClass) {
       super.visitClass(aClass);
+      if (aClass.isEnum()) {
+        return;
+      }
       final PsiMethod[] constructors = aClass.getConstructors();
       if (constructors.length == 0) {
         return;

plugins/InspectionGadgets/testsrc/com/siyeh/ig/classlayout/ClassWithOnlyPrivateConstructorsInspectionTest.java

@@ -41,6 +41,14 @@ public class ClassWithOnlyPrivateConstructorsInspectionTest extends LightInspect
     doTest("class X {}");
   }
 
+  public void testEnum() {
+    doTest("enum Currencies {\n" +
+           "    EURO, DOLLAR;\n" +
+           "    private Currencies() {\n" +
+           "    }\n" +
+           "}");
+  }
+
   @Nullable
   @Override
   protected InspectionProfileEntry getInspection() {