From 66decbfb08018605b7e0abcba39e2ca1b9093350 Mon Sep 17 00:00:00 2001
From: "Vadim B. Mikheev" <vadim4o@yahoo.com>
Date: Wed, 7 Feb 2001 23:34:18 +0000
Subject: [PATCH] Macro for btree runtime fix.

---
 src/include/access/nbtree.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h
index ed35f7b1f0a..e8d0950ecc1 100644
--- a/src/include/access/nbtree.h
+++ b/src/include/access/nbtree.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: nbtree.h,v 1.50 2001/01/24 19:43:19 momjian Exp $
+ * $Id: nbtree.h,v 1.51 2001/02/07 23:34:18 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -50,6 +50,10 @@ typedef BTPageOpaqueData *BTPageOpaque;
 #define BTREE_METAPAGE	0	/* first page is meta */
 #define BTREE_MAGIC		0x053162
 
+#define BTreeInvalidParent(opaque)	\
+	(opaque->btpo_parent == InvalidBlockNumber || \
+		opaque->btpo_parent == BTREE_METAPAGE)
+
 #define BTREE_VERSION	1
 
 typedef struct BTMetaPageData
-- 
2.39.5