From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: Fri, 16 Jan 2026 12:42:22 +0000 (+0200)
Subject: Fix crash in test function on removable_cutoff(NULL)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b6714ed9a1ab18af9cbfff8dd0f52cf99a1557e;p=thirdparty%2Fpostgresql.git

Fix crash in test function on removable_cutoff(NULL)

The function is part of the injection_points test module and only used
in tests. None of the current tests call it with a NULL argument, but
it is supposed to work.

Backpatch-through: 17
---

diff --git a/src/test/modules/injection_points/regress_injection.c b/src/test/modules/injection_points/regress_injection.c
index 7bba1c97d0f..524790a90ed 100644
--- a/src/test/modules/injection_points/regress_injection.c
+++ b/src/test/modules/injection_points/regress_injection.c
@@ -50,7 +50,7 @@ removable_cutoff(PG_FUNCTION_ARGS)
 	if (!PG_ARGISNULL(0))
 		rel = table_open(PG_GETARG_OID(0), AccessShareLock);
 
-	if (!rel->rd_rel->relisshared && autovacuum_start_daemon)
+	if (rel != NULL && !rel->rd_rel->relisshared && autovacuum_start_daemon)
 		elog(WARNING,
 			 "removable_cutoff(non-shared-rel) can move backward under autovacuum=on");