From 22ae1cc2465ba7ad521ae8d29f3daef56953947c Mon Sep 17 00:00:00 2001
From: Anna Kozlova <anna.kozlova@jetbrains.com>
Date: Fri, 31 Oct 2014 21:16:28 +0100
Subject: [PATCH] read action

---
 .../codeInspection/reference/RefManagerImpl.java         | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/platform/analysis-impl/src/com/intellij/codeInspection/reference/RefManagerImpl.java b/platform/analysis-impl/src/com/intellij/codeInspection/reference/RefManagerImpl.java
index f5ef75f8197b..aa84edc6b21b 100644
--- a/platform/analysis-impl/src/com/intellij/codeInspection/reference/RefManagerImpl.java
+++ b/platform/analysis-impl/src/com/intellij/codeInspection/reference/RefManagerImpl.java
@@ -450,8 +450,13 @@ public class RefManagerImpl extends RefManager {
 
   @Nullable
   public RefElement getReference(final PsiElement elem, final boolean ignoreScope) {
-    if (elem == null || !elem.isValid() ||
-        elem instanceof LightElement || !(elem instanceof PsiDirectory) && !belongsToScope(elem, ignoreScope)) {
+    if (ApplicationManager.getApplication().runReadAction(new Computable<Boolean>() {
+      @Override
+      public Boolean compute() {
+        return elem == null || !elem.isValid() ||
+               elem instanceof LightElement || !(elem instanceof PsiDirectory) && !belongsToScope(elem, ignoreScope);
+      }
+    })) {
       return null;
     }