From 2d36b4e238465eef1c587c987126714ba2ad45ea Mon Sep 17 00:00:00 2001
From: Alexey Kudravtsev <cdr@intellij.com>
Date: Tue, 25 Jun 2013 17:33:16 +0400
Subject: [PATCH] EA-46163 - IAE: TObjectHash.throwObjectContractViolation

---
 .../com/intellij/ide/plugins/IdeaPluginDescriptorImpl.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/platform/core-impl/src/com/intellij/ide/plugins/IdeaPluginDescriptorImpl.java b/platform/core-impl/src/com/intellij/ide/plugins/IdeaPluginDescriptorImpl.java
index e1d2b774737f..7d09201d9126 100644
--- a/platform/core-impl/src/com/intellij/ide/plugins/IdeaPluginDescriptorImpl.java
+++ b/platform/core-impl/src/com/intellij/ide/plugins/IdeaPluginDescriptorImpl.java
@@ -115,7 +115,9 @@ public class IdeaPluginDescriptorImpl implements IdeaPluginDescriptor {
 
   @NotNull
   public static String intern(@NotNull String s) {
-    return ourInterner.intern(s);
+    synchronized (ourInterner) {
+      return ourInterner.intern(s);
+    }
   }
 
   public static void internJDOMElement(@NotNull Element rootElement) {