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-rw-r--r--src/backend/access/index/genam.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/access/index/genam.c b/src/backend/access/index/genam.c
index c911c705ba6..1c3e937c615 100644
--- a/src/backend/access/index/genam.c
+++ b/src/backend/access/index/genam.c
@@ -301,6 +301,8 @@ index_compute_xid_horizon_for_tuples(Relation irel,
Page ipage = BufferGetPage(ibuf);
IndexTuple itup;
+ Assert(nitems > 0);
+
delstate.bottomup = false;
delstate.bottomupfreespace = 0;
delstate.ndeltids = 0;