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ITS#8109 fix mdb_cursor_del0 on empty DB
author
Howard Chu
<hyc@openldap.org>
Thu, 23 Apr 2015 04:49:56 +0000
(
05:49
+0100)
committer
Howard Chu
<hyc@openldap.org>
Thu, 23 Apr 2015 04:49:56 +0000
(
05:49
+0100)
libraries/liblmdb/mdb.c
patch
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diff --git
a/libraries/liblmdb/mdb.c
b/libraries/liblmdb/mdb.c
index
4e0607f
..
f1c7508
100644
(file)
--- a/
libraries/liblmdb/mdb.c
+++ b/
libraries/liblmdb/mdb.c
@@
-7963,6
+7963,13
@@
mdb_cursor_del0(MDB_cursor *mc)
MDB_cursor *m2, *m3;
MDB_dbi dbi = mc->mc_dbi;
+ /* DB is totally empty now, just bail out.
+ * Other cursors adjustments were already done
+ * by mdb_rebalance and aren't needed here.
+ */
+ if (!mc->mc_snum)
+ return rc;
+
mp = mc->mc_pg[mc->mc_top];
nkeys = NUMKEYS(mp);