From: Howard Chu <hyc@symas.com>
Date: Thu, 24 Jul 2014 11:13:55 +0000 (-0700)
Subject: more for mdb_cursor_count
X-Git-Tag: submit/tizen/20180312.054306~334
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=082bac1492c1aec8ac0fbe8cc10ac3f46424b836;p=platform%2Fupstream%2Flmdb.git

more for mdb_cursor_count

return MDB_NOTFOUND if the cursor is empty
---

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 3e62b2e..84477c4 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -6962,6 +6962,9 @@ mdb_cursor_count(MDB_cursor *mc, size_t *countp)
 	if (!(mc->mc_flags & C_INITIALIZED))
 		return EINVAL;
 
+	if (!mc->mc_snum || (mc->mc_flags & C_EOF))
+		return MDB_NOTFOUND;
+
 	leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]);
 	if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
 		*countp = 1;