1 files changed, 9 insertions, 0 deletions
diff --git a/pack-objects.h b/pack-objects.h
index d1b98b3..cc9b9a9 100644
--- a/pack-objects.h
+++ b/pack-objects.h
@@ -27,6 +27,15 @@ struct object_entry {
 	unsigned no_try_delta:1;
 	unsigned tagged:1; /* near the very tip of refs */
 	unsigned filled:1; /* assigned write-order */
+
+	/*
+	 * State flags for depth-first search used for analyzing delta cycles.
+	 */
+	enum {
+		DFS_NONE = 0,
+		DFS_ACTIVE,
+		DFS_DONE
+	} dfs_state;
 };
 
 struct packing_data {