Index: lucene/core/src/java/org/apache/lucene/index/StandardDirectoryReader.java
===================================================================
--- lucene/core/src/java/org/apache/lucene/index/StandardDirectoryReader.java	(revision 1550820)
+++ lucene/core/src/java/org/apache/lucene/index/StandardDirectoryReader.java	(working copy)
@@ -25,6 +25,7 @@
 import java.util.List;
 import java.util.Map;
 
+import org.apache.lucene.store.AlreadyClosedException;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.IOContext;
 import org.apache.lucene.util.IOUtils;
@@ -364,7 +365,12 @@
     if (writer != null) {
       // Since we just closed, writer may now be able to
       // delete unused files:
-      writer.deletePendingFiles();
+      try {
+        writer.deletePendingFiles();
+      } catch (AlreadyClosedException ex) {
+        // ignore if we get an ACL the Directory we
+        // were opened on might already be closed
+      }
     }
 
     // throw the first exception