From e47984e6161094018d67fb094fbcbc80f8ca3f0c Mon Sep 17 00:00:00 2001
From: Andrew Kane <andrew@ankane.org>
Date: Sat, 24 Aug 2024 22:10:26 -0700
Subject: [PATCH] Reset tuple sort for Postgres 12 [skip ci]

---
 src/ivfscan.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/ivfscan.c b/src/ivfscan.c
index 91ff3cc..0a5fea5 100644
--- a/src/ivfscan.c
+++ b/src/ivfscan.c
@@ -292,10 +292,15 @@ ivfflatrescan(IndexScanDesc scan, ScanKey keys, int nkeys, ScanKey orderbys, int
 {
 	IvfflatScanOpaque so = (IvfflatScanOpaque) scan->opaque;
 
-#if PG_VERSION_NUM >= 130000
 	if (!so->first)
+	{
+#if PG_VERSION_NUM >= 130000
 		tuplesort_reset(so->sortstate);
+#else
+		tuplesort_end(so->sortstate);
+		so->sortstate = InitScanSortState(so->tupdesc);
 #endif
+	}
 
 	so->first = true;
 	pairingheap_reset(so->listQueue);