From cf652018332819716b10c9de9ce80c81284d6815 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Wed, 2 Aug 2017 10:59:01 -0400
Subject: [PATCH] Get a snapshot before COPY in table sync

This fixes a crash if the local table has a function index and the
function makes non-immutable calls.

Reported-by: Scott Milliken <scott@deltaex.com>
Author: Masahiko Sawada <sawada.mshk@gmail.com>
---
 src/backend/replication/logical/tablesync.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backend/replication/logical/tablesync.c b/src/backend/replication/logical/tablesync.c
index 32abf5b368..4cca0f1a85 100644
--- a/src/backend/replication/logical/tablesync.c
+++ b/src/backend/replication/logical/tablesync.c
@@ -917,7 +917,9 @@ LogicalRepSyncTableStart(XLogRecPtr *origin_startpos)
 				walrcv_create_slot(wrconn, slotname, true,
 								   CRS_USE_SNAPSHOT, origin_startpos);
 
+				PushActiveSnapshot(GetTransactionSnapshot());
 				copy_table(rel);
+				PopActiveSnapshot();
 
 				res = walrcv_exec(wrconn, "COMMIT", 0, NULL);
 				if (res->status != WALRCV_OK_COMMAND)
-- 
2.40.0