> There was never a bug here. The doc is quite explicit > http://www.lmdb.tech/doc/group__mdb.html#ga73a5938ae4c3239ee11efa07eb22b882 > > After txn_abort the only valid call on a still-open cursor is > cursor_renew, not cursor_close. However you want to call it, are you open to improve this workflow? API-wise, it would be so much simpler just to free a cursor after it became obsolete. It's counter-intuitive to open a new txn, renew the cursor, close the cursor, and abort the txn - just to close a cursor.