From 1e4f34f3099cad3a0860f4ec3762e2a5a5f86dfa Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Tue, 30 Apr 2002 19:53:03 +0000
Subject: [PATCH] Document that NAMEDATALEN must be a multiple of sizeof(int).
---
src/include/c.h | 6 ++++--
src/include/postgres_ext.h | 5 +++--
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/src/include/c.h b/src/include/c.h
index 0a8a129c02c..9053628d622 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -12,7 +12,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Id: c.h,v 1.119 2002/04/25 02:56:56 tgl Exp $
+ * $Id: c.h,v 1.120 2002/04/30 19:53:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -420,7 +420,9 @@ typedef Oid oidvector[INDEX_MAX_KEYS];
/*
* We want NameData to have length NAMEDATALEN and int alignment,
* because that's how the data type 'name' is defined in pg_type.
- * Use a union to make sure the compiler agrees.
+ * Use a union to make sure the compiler agrees. Note that NAMEDATALEN
+ * must be a multiple of sizeof(int), else sizeof(NameData) will probably
+ * not come out equal to NAMEDATALEN.
*/
typedef union nameData
{
diff --git a/src/include/postgres_ext.h b/src/include/postgres_ext.h
index 0699cebdf8d..3249ce4350b 100644
--- a/src/include/postgres_ext.h
+++ b/src/include/postgres_ext.h
@@ -15,7 +15,7 @@
* use header files that are otherwise internal to Postgres to interface
* with the backend.
*
- * $Id: postgres_ext.h,v 1.9 2001/10/28 06:25:59 momjian Exp $
+ * $Id: postgres_ext.h,v 1.10 2002/04/30 19:53:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -36,7 +36,8 @@ typedef unsigned int Oid;
/*
* NAMEDATALEN is the max length for system identifiers (e.g. table names,
- * attribute names, function names, etc.)
+ * attribute names, function names, etc). It must be a multiple of
+ * sizeof(int) (typically 4).
*
* NOTE that databases with different NAMEDATALEN's cannot interoperate!
*/
--
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