From c17cff1d4ed288ed63eeaa20a28d0c5ec1bffcc8 Mon Sep 17 00:00:00 2001
From: Leo Yuriev <leo@yuriev.ru>
Date: Wed, 30 Mar 2016 00:04:10 +0300
Subject: [PATCH] check MDB_RESERVE against MDB_DUPSORT.

Change-Id: I7459a92ecea867a5fd6510c828ff65cd551a1e9a
---
 mdb.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mdb.c b/mdb.c
index dbbb9871..eb9d3a5d 100644
--- a/mdb.c
+++ b/mdb.c
@@ -6543,6 +6543,11 @@ mdb_cursor_put(MDB_cursor *mc, MDB_val *key, MDB_val *data,
 			return MDB_INCOMPATIBLE;
 	}
 
+	if (flags & MDB_RESERVE) {
+		if (unlikely(mc->mc_db->md_flags & (MDB_DUPSORT | MDB_REVERSEDUP)))
+			return MDB_INCOMPATIBLE;
+	}
+
 	nospill = flags & MDB_NOSPILL;
 	flags &= ~MDB_NOSPILL;