From 887dd041a65006deeaf514f78e4a5012dc6f7f7c Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Tue, 15 Feb 2011 13:27:03 -0500
Subject: [PATCH] Fix obsolete comment.

Comment about MaxAllocSize was not updated when the TOAST-header macros
were replaced in 8.3 "varvarlena" changes.  Per report from Frederik Ramm.
---
 src/include/utils/memutils.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/include/utils/memutils.h b/src/include/utils/memutils.h
index 5ee533b30d7..7c1202478e5 100644
--- a/src/include/utils/memutils.h
+++ b/src/include/utils/memutils.h
@@ -30,7 +30,9 @@
  *		be summarily denied.
  *
  * XXX This is deliberately chosen to correspond to the limiting size
- * of varlena objects under TOAST.	See VARATT_MASK_SIZE in postgres.h.
+ * of varlena objects under TOAST.	See VARSIZE_4B() and related macros
+ * in postgres.h.  Many datatypes assume that any allocatable size can
+ * be represented in a varlena header.
  *
  * XXX Also, various places in aset.c assume they can compute twice an
  * allocation's size without overflow, so beware of raising this.