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-rw-r--r--cache-tree.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/cache-tree.c b/cache-tree.c
index c53f7de2b1..648e187491 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -299,6 +299,8 @@ static int update_one(struct cache_tree *it,
flags);
if (subcnt < 0)
return subcnt;
+ if (!subcnt)
+ die("index cache-tree records empty sub-tree");
i += subcnt;
sub->count = subcnt; /* to be used in the next loop */
*skip_count += subskip;