From b76c47151c5a3d70995f52c12438cd7a5a10719f Mon Sep 17 00:00:00 2001
From: Alexey Sedunov <alexey.sedunov@jetbrains.com>
Date: Mon, 7 Sep 2015 16:45:10 +0300
Subject: [PATCH] Change Signature: Skip PsiMethods without containing class 
 #KT-8536 Fixed

---
 .../changeSignature/JetChangeSignatureUsageProcessor.java       | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/JetChangeSignatureUsageProcessor.java b/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/JetChangeSignatureUsageProcessor.java
index 8b77379432f..e80d899e1a5 100644
--- a/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/JetChangeSignatureUsageProcessor.java
+++ b/idea/src/org/jetbrains/kotlin/idea/refactoring/changeSignature/JetChangeSignatureUsageProcessor.java
@@ -434,6 +434,8 @@ public class JetChangeSignatureUsageProcessor implements ChangeSignatureUsagePro
         PsiElement method = changeInfo.getMethod();
         if (!RefactoringPackage.isTrueJavaMethod(method)) return;
 
+        if (((PsiMethod) method).getContainingClass() == null) return;
+
         FunctionDescriptor methodDescriptor = JavaResolutionUtils.getJavaMethodDescriptor((PsiMethod) method);
         assert methodDescriptor != null;