From afc9635c600ace716294a12d78abd37f65abd0ea Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 11 Jul 2011 20:32:29 -0400
Subject: [PATCH] Add C comment that txid_current() assigns an XID if one is
 not already assigned.

---
 src/backend/utils/adt/txid.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/backend/utils/adt/txid.c b/src/backend/utils/adt/txid.c
index 2907306e928..192ae6640d0 100644
--- a/src/backend/utils/adt/txid.c
+++ b/src/backend/utils/adt/txid.c
@@ -321,7 +321,8 @@ bad_format:
 /*
  * txid_current() returns int8
  *
- *		Return the current toplevel transaction ID as TXID
+ *	Return the current toplevel transaction ID as TXID
+ *	If the current transaction does not have one, one is assigned.
  */
 Datum
 txid_current(PG_FUNCTION_ARGS)
-- 
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