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ITS#8109 fix mdb_cursor_del0 on empty DB

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This commit is contained in:
Howard Chu 2015-04-23 05:49:56 +01:00
parent 8cf73291fb
commit b7511480c5
1 changed files with 7 additions and 0 deletions
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7
libraries/liblmdb/mdb.c
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@ -7845,6 +7845,13 @@ 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);