From f66fcc5cd616da8d81a2d2f9b80a9f080796f4b6 Mon Sep 17 00:00:00 2001
From: Amit Kapila
Date: Fri, 1 Dec 2023 10:14:36 +0530
Subject: Fix an uninitialized access in hash_xlog_squeeze_page().

Commit 861f86beea changed hash_xlog_squeeze_page() to start reading
the write buffer conditionally but forgot to initialize it leading to an
uninitialized access.

Reported-by: Alexander Lakhin
Author: Hayato Kuroda
Reviewed-by: Alexander Lakhin, Amit Kapila
Discussion: http://postgr.es/m/62ed1a9f-746a-8e86-904b-51b9b806a1d9@gmail.com
---
 src/backend/access/hash/hash_xlog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/backend/access')

diff --git a/src/backend/access/hash/hash_xlog.c b/src/backend/access/hash/hash_xlog.c
index 40debf40288..f1e233a8173 100644
--- a/src/backend/access/hash/hash_xlog.c
+++ b/src/backend/access/hash/hash_xlog.c
@@ -632,7 +632,7 @@ hash_xlog_squeeze_page(XLogReaderState *record)
 	XLogRecPtr	lsn = record->EndRecPtr;
 	xl_hash_squeeze_page *xldata = (xl_hash_squeeze_page *) XLogRecGetData(record);
 	Buffer		bucketbuf = InvalidBuffer;
-	Buffer		writebuf;
+	Buffer		writebuf = InvalidBuffer;
 	Buffer		ovflbuf;
 	Buffer		prevbuf = InvalidBuffer;
 	Buffer		mapbuf;
-- 
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