postgres
diff --git a/‎src/backend/commands/collationcmds.c
Copy file name to clipboardExpand all lines: src/backend/commands/collationcmds.c
+5-3Lines changed: 5 additions & 3 deletions b/‎src/backend/commands/collationcmds.c
Copy file name to clipboardExpand all lines: src/backend/commands/collationcmds.c
+5-3Lines changed: 5 additions & 3 deletions
@@ -522,14 +522,16 @@ pg_import_system_collations(PG_FUNCTION_ARGS)
 	Oid			nspid = PG_GETARG_OID(0);
 	int			ncreated = 0;
 
-	/* silence compiler warning if we have no locale implementation at all */
-	(void) nspid;
-
 	if (!superuser())
 		ereport(ERROR,
 				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
 				 errmsg("must be superuser to import system collations")));
 
+	if (!SearchSysCacheExists1(NAMESPACEOID, ObjectIdGetDatum(nspid)))
+		ereport(ERROR,
+				(errcode(ERRCODE_UNDEFINED_SCHEMA),
+				 errmsg("schema with OID %u does not exist", nspid)));
+
 	/* Load collations known to libc, using "locale -a" to enumerate them */
 #ifdef READ_LOCALE_A_OUTPUT
 	{