From 5e9ca6f466fc907466a0d000ec6ed4ef8d188fb6 Mon Sep 17 00:00:00 2001
From: Mikhail Glukhikh <mikhail.glukhikh@jetbrains.com>
Date: Wed, 28 Mar 2018 16:30:46 +0200
Subject: [PATCH] Optimization: AddVarianceModifierInspection

---
 .../kotlin/idea/inspections/AddVarianceModifierInspection.kt     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/idea/src/org/jetbrains/kotlin/idea/inspections/AddVarianceModifierInspection.kt b/idea/src/org/jetbrains/kotlin/idea/inspections/AddVarianceModifierInspection.kt
index 130da8b731e..a6b265a7983 100644
--- a/idea/src/org/jetbrains/kotlin/idea/inspections/AddVarianceModifierInspection.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/inspections/AddVarianceModifierInspection.kt
@@ -50,6 +50,7 @@ class AddVarianceModifierInspection : AbstractKotlinInspection() {
 
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean, session: LocalInspectionToolSession): PsiElementVisitor {
         return classOrObjectVisitor { klass ->
+            if (klass.typeParameters.isEmpty()) return@classOrObjectVisitor
             val context = klass.analyzeWithContent()
             for (typeParameter in klass.typeParameters) {
                 if (typeParameter.variance != Variance.INVARIANT) continue