From f7082f269eb2ee5347ddd411602a870866d783d2 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Wed, 30 Sep 2009 21:26:17 +0000
Subject: [PATCH] Fix bogus Assert, per buildfarm results.

---
 contrib/hstore/hstore_op.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/contrib/hstore/hstore_op.c b/contrib/hstore/hstore_op.c
index 2338bbf44bd..cc1a162dacb 100644
--- a/contrib/hstore/hstore_op.c
+++ b/contrib/hstore/hstore_op.c
@@ -1,5 +1,5 @@
 /*
- * $PostgreSQL: pgsql/contrib/hstore/hstore_op.c,v 1.14 2009/09/30 19:50:22 tgl Exp $
+ * $PostgreSQL: pgsql/contrib/hstore/hstore_op.c,v 1.15 2009/09/30 21:26:17 tgl Exp $
  */
 #include "postgres.h"
 
@@ -1236,8 +1236,10 @@ hstore_hash(PG_FUNCTION_ARGS)
 	 * but we make it explicit here.
 	 */
 	Assert(VARSIZE(hs) ==
-		   CALCDATASIZE(HS_COUNT(hs),
-						HSE_ENDPOS(ARRPTR(hs)[2*HS_COUNT(hs) - 1])));
+		   (HS_COUNT(hs) != 0 ?
+			CALCDATASIZE(HS_COUNT(hs),
+						 HSE_ENDPOS(ARRPTR(hs)[2*HS_COUNT(hs) - 1])) :
+			HSHRDSIZE));
 
 	PG_FREE_IF_COPY(hs,0);
 	PG_RETURN_DATUM(hval);
-- 
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