From 2cff363715efe3fd2dfbb04f9aa52fd5638f8f0d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Herrera?= <alvherre@kurilemu.de>
Date: Wed, 8 Apr 2026 22:58:56 +0200
Subject: [PATCH] Simplify declaration of memcpy target

The existing one is understandable failing on (some?) 32-bit platforms.

Reported-by: Tomas Vondra <tomas@vondra.me>
Suggested-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/1c197f2d-49a2-4830-8dde-55867218b62d@vondra.me
---
 src/backend/commands/repack.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c
index 20dad22c4b7..58e3867246f 100644
--- a/src/backend/commands/repack.c
+++ b/src/backend/commands/repack.c
@@ -2710,11 +2710,7 @@ restore_tuple(BufFile *file, Relation relation, TupleTableSlot *slot)
 		{
 			CompactAttribute *attr = TupleDescCompactAttr(desc, i);
 			varlena    *varlen;
-			union
-			{
-				alignas(int32) varlena hdr;
-				char		data[sizeof(void *)];
-			}			chunk_header;
+			uint64		chunk_header;
 			void	   *value;
 			Size		varlensz;