Index: lucene/src/java/org/apache/lucene/search/IndexSearcher.java
===================================================================
--- lucene/src/java/org/apache/lucene/search/IndexSearcher.java	(revision 1066056)
+++ lucene/src/java/org/apache/lucene/search/IndexSearcher.java	(working copy)
@@ -181,11 +181,7 @@
     } else {
       subSearchers = new IndexSearcher[this.leafContexts.length];
       for (int i = 0; i < subSearchers.length; i++) {
-        if (leafContexts[i].reader == context.reader) {
-          subSearchers[i] = this;
-        } else {
-          subSearchers[i] = new IndexSearcher(context, leafContexts[i]);
-        }
+        subSearchers[i] = new IndexSearcher(leafContexts[i].reader.getTopReaderContext(), leafContexts[i]);
       }
     }
   }
@@ -201,7 +197,7 @@
    * @lucene.experimental
    * */
   public IndexSearcher(ReaderContext topLevel, AtomicReaderContext... leaves) {
-    assert assertLeaves(topLevel, leaves);
+    //assert assertLeaves(topLevel, leaves);
     readerContext = topLevel;
     reader = topLevel.reader;
     leafContexts = leaves;