On 18. nov. 2015 12:07, h.b.furuseth@usit.uio.no wrote:

The test program can crash dereferencing mp==NULL at mdb_cursor_del0() line 8244 "nkeys = NUMKEYS(mp);"

Broken by 8bdadf68c580 "ITS#8258 fix rebalance/split".

(It broke differently in LMDB 0.9.16. Assertion NUMKEYS(mp)>1, fixed by d84fae3fe31c "ITS#8237 fix ITS#7589 regression".)