1 files changed, 5 insertions, 0 deletions
diff --git a/platform/lang-impl/src/com/intellij/util/indexing/containers/SortedIdSet.java b/platform/lang-impl/src/com/intellij/util/indexing/containers/SortedIdSet.java
index 5405bbc2cf98..3e77e25aad7b 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/containers/SortedIdSet.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/containers/SortedIdSet.java
@@ -132,6 +132,11 @@ public class SortedIdSet implements Cloneable, RandomAccessIntContainer {
     public boolean hasAscendingOrder() {
       return true;
     }
+
+    @Override
+    public ValueContainer.IntIterator createCopyInInitialState() {
+      return new Iterator();
+    }
   }
 
   private static int binarySearch(int[] set, int off, int length, int key) {