From: Vadim B. Mikheev <vadim4o@yahoo.com>
Date: Wed, 7 Feb 2001 23:34:18 +0000 (+0000)
Subject: Macro for btree runtime fix.
X-Git-Url: http://waps.l3s.uni-hannover.de/gitweb/?a=commitdiff_plain;h=ef37f2cd3dd1b7cd7aad775920551d6793228eb1;p=users%2Fbernd%2Fpostgres.git

Macro for btree runtime fix.
---

diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h
index a2ce1f1069..cb720ea9f8 100644
--- a/src/include/access/nbtree.h
+++ b/src/include/access/nbtree.h
@@ -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