### Eclipse Workspace Patch 1.0
#P org.eclipse.core.resources
Index: src/org/eclipse/core/internal/localstore/UnifiedTreeNode.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.core.resources/src/org/eclipse/core/internal/localstore/UnifiedTreeNode.java,v
retrieving revision 1.23
diff -u -r1.23 UnifiedTreeNode.java
--- src/org/eclipse/core/internal/localstore/UnifiedTreeNode.java	18 Mar 2009 11:02:11 -0000	1.23
+++ src/org/eclipse/core/internal/localstore/UnifiedTreeNode.java	14 Oct 2009 14:39:28 -0000
@@ -7,6 +7,7 @@
  * 
  * Contributors:
  *     IBM Corporation - initial API and implementation
+ *     Martin Oberhuber (Wind River) - [292267] OutOfMemoryError due to leak in UnifiedTree
  *******************************************************************************/
 package org.eclipse.core.internal.localstore;
 
@@ -108,6 +109,17 @@
 		this.fileInfo = info;
 		this.existsWorkspace = existsInWorkspace;
 	}
+	
+	/**
+	 * Releases elements that won't be needed any more for garbage collection.
+	 * Should be called before adding a node to the free list.
+	 */
+	public void releaseForGc() {
+		this.child = null;
+		this.resource = null;
+		this.store = null;
+		this.fileInfo = null;
+	}
 
 	public void setExistsWorkspace(boolean exists) {
 		this.existsWorkspace = exists;
Index: src/org/eclipse/core/internal/localstore/UnifiedTree.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.core.resources/src/org/eclipse/core/internal/localstore/UnifiedTree.java,v
retrieving revision 1.47
diff -u -r1.47 UnifiedTree.java
--- src/org/eclipse/core/internal/localstore/UnifiedTree.java	18 Mar 2009 11:02:11 -0000	1.47
+++ src/org/eclipse/core/internal/localstore/UnifiedTree.java	14 Oct 2009 14:39:28 -0000
@@ -9,6 +9,7 @@
  *     IBM Corporation - initial API and implementation
  *     Martin Oberhuber (Wind River) - [105554] handle cyclic symbolic links
  *     Martin Oberhuber (Wind River) - [232426] shared prefix histories for symlinks
+ *     Martin Oberhuber (Wind River) - [292267] OutOfMemoryError due to leak in UnifiedTree
  *******************************************************************************/
 package org.eclipse.core.internal.localstore;
 
@@ -107,8 +108,12 @@
 				addNodeChildrenToQueue(node);
 			else
 				removeNodeChildrenFromQueue(node);
-			//allow reuse of the node
-			freeNodes.add(node);
+			//allow reuse of the node, but don't let the freeNodes list grow infinitely
+			if (freeNodes.size() < 32767) {
+				freeNodes.add(node);
+				//free memory-consuming elements of the node for garbage collection
+				node.releaseForGc();
+			}
 		}
 	}