From 934afba6ff94496fe0cf5060c42973e268c003fa Mon Sep 17 00:00:00 2001
From: Roman Shevchenko <roman.shevchenko@jetbrains.com>
Date: Mon, 12 Mar 2012 14:23:27 +0100
Subject: [PATCH] Assertion

---
 .../com/intellij/openapi/vfs/newvfs/persistent/PersistentFS.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFS.java b/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFS.java
index 64fe931a344a..8496cf87b195 100644
--- a/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFS.java
+++ b/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFS.java
@@ -985,6 +985,7 @@ public class PersistentFS extends ManagingFS implements ApplicationComponent {
       final int parentId = getFileId(parent);
       int childId = createAndCopyRecord(delegate, fake, parentId, attributes);
       appendIdToParentList(parentId, childId);
+      assert parent instanceof VirtualDirectoryImpl : parent;
       final VirtualDirectoryImpl dir = (VirtualDirectoryImpl)parent;
       dir.addChild(dir.createChild(name, childId));
     }