1 files changed, 4 insertions, 0 deletions
diff --git a/src/mongo/db/pipeline/document_source_sort.h b/src/mongo/db/pipeline/document_source_sort.h
index cd669051e67..84213ce9fd2 100644
--- a/src/mongo/db/pipeline/document_source_sort.h
+++ b/src/mongo/db/pipeline/document_source_sort.h
@@ -55,6 +55,9 @@ public:
         int memUsageForSorter() const {
             return sizeof(SortableDate);
         }
+        std::string toString() const {
+            return date.toString();
+        }
     };
 
     static constexpr StringData kStageName = "$sort"_sd;
@@ -213,6 +216,7 @@ private:
 
     using TimeSorterInterface = BoundedSorterInterface<SortableDate, Document>;
     std::unique_ptr<TimeSorterInterface> _timeSorter;
+    QueryMetadataBitSet _requiredMetadata;
 };
 
 }  // namespace mongo