From e28b3c72274f0eca02cbc48b073d1fb8860dcfa3 Mon Sep 17 00:00:00 2001
From: Dmitry Jemerov <yole@jetbrains.com>
Date: Thu, 19 Mar 2015 18:09:15 +0100
Subject: [PATCH] check for element validity inside read action (IDEA-CR-1554)

---
 .../com/intellij/coverage/view/JavaCoverageViewExtension.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugins/coverage/src/com/intellij/coverage/view/JavaCoverageViewExtension.java b/plugins/coverage/src/com/intellij/coverage/view/JavaCoverageViewExtension.java
index 2a7103ceb9cf..c6a8c108b734 100644
--- a/plugins/coverage/src/com/intellij/coverage/view/JavaCoverageViewExtension.java
+++ b/plugins/coverage/src/com/intellij/coverage/view/JavaCoverageViewExtension.java
@@ -254,7 +254,7 @@ public class JavaCoverageViewExtension extends CoverageViewExtension {
             if (file instanceof PsiJavaFile) {
               PsiClass[] classes = ApplicationManager.getApplication().runReadAction(new Computable<PsiClass[]>() {
                 public PsiClass[] compute() {
-                  return ((PsiJavaFile) file).getClasses();
+                  return file.isValid() ? ((PsiJavaFile) file).getClasses() : PsiClass.EMPTY_ARRAY;
                 }
               });
               if (classes.length > 0) {
@@ -291,7 +291,7 @@ public class JavaCoverageViewExtension extends CoverageViewExtension {
   private PackageAnnotator.ClassCoverageInfo getClassCoverageInfo(final PsiClass aClass) {
     return myAnnotator.getClassCoverageInfo(ApplicationManager.getApplication().runReadAction(new NullableComputable<String>() {
       public String compute() {
-        return aClass.getQualifiedName();
+        return aClass.isValid() ? aClass.getQualifiedName() : null;
       }
     }));
   }