[GitHub] [lucene] jpountz commented on a change in pull request #389: LUCENE-10159: Fix invalid access in sorted set dv

[GitBox]

jpountz commented on a change in pull request #389:
URL: https://github.com/apache/lucene/pull/389#discussion_r730575499



##########
File path: 
lucene/core/src/java/org/apache/lucene/codecs/lucene90/Lucene90DocValuesProducer.java
##########
@@ -1402,15 +1403,23 @@ public int docID() {
       @Override
       public int nextDoc() throws IOException {
         int doc = ords.nextDoc();
-        count = ords.docValueCount();
+        if (doc != NO_MORE_DOCS) {
+          count = ords.docValueCount();
+        } else {
+          count = 0;
+        }
         i = 0;
         return doc;
       }
 
       @Override
       public int advance(int target) throws IOException {
         int doc = ords.advance(target);
-        count = ords.docValueCount();
+        if (doc != NO_MORE_DOCS) {
+          count = ords.docValueCount();
+        } else {
+          count = 0;
+        }

Review comment:
       @rmuir But we still need to make sure we don't call `docValueCount()` 
when the iterator is not positioned since this is illegal?




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