From 78a09145e0f8322e625bbc7d69fcb865ce4f3034 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Sat, 19 Dec 2009 00:47:57 +0000
Subject: binary migration:  pg_migrator

Add comments about places where system oids have to be preserved for
binary migration.
---
 src/backend/utils/adt/enum.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/backend/utils/adt/enum.c')

diff --git a/src/backend/utils/adt/enum.c b/src/backend/utils/adt/enum.c
index 009c6c3f924..38805722217 100644
--- a/src/backend/utils/adt/enum.c
+++ b/src/backend/utils/adt/enum.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/enum.c,v 1.7 2009/01/01 17:23:49 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/enum.c,v 1.8 2009/12/19 00:47:57 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -56,6 +56,10 @@ enum_in(PG_FUNCTION_ARGS)
 						format_type_be(enumtypoid),
 						name)));
 
+	/*
+	 *	This comes from pg_enum.oid and stores system oids in user tables.
+	 *	This oid must be preserved by binary upgrades.
+	 */
 	enumoid = HeapTupleGetOid(tup);
 
 	ReleaseSysCache(tup);
-- 
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