1 files changed, 5 insertions, 0 deletions
diff --git a/read-cache.c b/read-cache.c
index 2c450866ce..22a814311d 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1269,6 +1269,11 @@ unmap:
 	die("index file corrupt");
 }
 
+int is_index_unborn(struct index_state *istate)
+{
+	return (!istate->cache_nr && !istate->alloc && !istate->timestamp);
+}
+
 int discard_index(struct index_state *istate)
 {
 	istate->cache_nr = 0;